Arramel Arramel

• Dr
• Research and Development Manager at Nanotech Indonesia Global

We report on the light-induced switching of conductance of a new generation of diarylethene switches embedded in an insulating matrix of dodecanethiol on Au(111), by using scanning tunneling microscopy (STM). The diarylethene switches we synthesize and study are modified diarylethenes where the thiophene unit at one side of the molecular backbone i...

Understanding how molecules interact to form large scale hierarchical structures on surfaces holds promise for building designer nanoscale constructs with defined chemical and physical properties. Here, we describe early advances in this field and highlight upcoming opportunities and challenges. Both direct intermolecular interactions and those tha...

Intensive effort to tailor photophysics of lead-free perovskites is appealing in recent years. However, their combined electronic and optical property elucidations remain elusive. Here, we report spectroscopic observations of the coexistence Zhang-Rice singlet state and exotic electronic transitions in two-dimensional copper-based perovskites. Here...

This book is for senior undergraduates, graduate students and researchers interested in understanding the physical and chemical interactions of organic semiconductors on emergent two-dimensional (2D) materials. Molecular electronics has come of age, and there is now a pressing need to understand molecule-2D material heterointerfaces at the nanoscal...

In the past decades, halide perovskites and chalcogenide materials have provided significant contributions to the vast development for optoelectronic applications. Halide perovskites are known for their tunable properties, while chalcogenides are known for their high efficiency. The combination of these types of materials as heterostructures is tho...

Low-dimensional bismuth-based hybrid organic-inorganic halide perovskites (Bi-HOIPs) are intriguing scintillating materials due to their anisotropic nature. However, a systematic investigation of Bi-HOIPs framework for X-ray detection imaging remains lacking. In...

Nuclear energy emerges as a promising and environmentally friendly solution to counter the escalating levels of greenhouse gases resulting from excessive fossil fuel usage. Essential to harnessing this energy are nuclear batteries, devices designed to generate electric power by capturing the energy emitted during nuclear decay, including α or β par...

The implementation of titanium dioxide (TiO 2) as a photocatalyst material in hydrogen (H 2) evolution reaction (HER) has embarked renewed interest in the past decade. Rapid electron-hole pairs recombination and wide band gap of a photo-sensitive material of TiO 2 are detrimental toward the targeted catalytical reaction. In this study, we present t...

Microbial fuel cells (MFCs) have been considered an eco-friendly avenue for electricity production and concurrent water purificationtechnology. In MFCs, electrodes as the building blocks of MFCs play a significant role in determining the performances, thus an optimized selection of the suitable electrodes becomes crucial. Over the last decade, two-...

The precise control of electronic structure in nitrogen-doped titanium dioxide (N-TiO2) is crucial for optimizing its optoelectronic performance. In this study, N-TiO2 films were prepared via an in-situ hydrothermal method by varying the urea concentrations. Surface-sensitive X-ray photoelectron (XPS) and high-brilliance synchrotron-based X-ray abs...

Utilizing eco-friendly inhibitors offers an effective approach to combat pipe corrosion, as focus has increasingly turned towards options that are cost-effective, environmentally benign. The research investigates the application of waste from domestic chicken eggshells as a corrosion inhibitor. The objective of this study is to evaluate the effecti...

The nitrogen (N2) transferred to ammonia (NH3) is a significant process for environment, chemistry and so on, but the traditional technology for NH3 synthesis is high energy and polluted environment....

The excessive demand for phosphorus-based fertilizers is contributing to the undesired byproduct of phosphogypsum (PG), typically found in large quantities in phosphoric acid industry. Without proper management, this industrial waste poses a significant environmental pollution risk. Current technologies are struggle to effectively handle the volume...

Molecular engineering serves as a prevalent strategy in solar cells architecture toward robust, reliable, and highly efficient light‐electricity conversion devices. Specifically, two well‐known strategies, i.e., halogen substitution and π‐spacer modification, are extensively introduced. However, the underlying photovoltaics mechanism on benzodithio...

Hydroxyapatite (HAp, Ca10(PO4)6(OH)2) has garnered considerable scientific attention in a variety of areas because of its excellent biocompatibility and biological activity. A highly efficient and scalable hydroxyapatite synthetic pathway from oyster shell waste has been introduced. Throughout the co-precipitation method, we obtain several physicoc...

CsCu2I3 lead-free nanocrystals (NCs) have recently garnered significant interest for their outstanding optical and scintillation characteristics , particularly for X-ray imaging applications. In this study, CsCu 2 I 3 NCs are mixed with polydimethylsiloxane (PDMS) resin in the form of a pellet to protect against environmental factors such as moistu...

The correlation between the glass‐forming ability (GFA) of Metal–Organic Frameworks (MOFs) and their structural characteristics remains poorly understood. To address this gap, we analyze over 20,000 MOFs from the MOF database, comparing geometric and electronic order parameters between zeolitic imidazolate frameworks (ZIFs) and other MOFs. Our find...

Amidst the powerful capabilities of wastewater remediation using ozone nanobubbles (ONBs), the intricate challenge of pH control remains unsolved. To date, an efficient and scalable chemical agent is highly desired to overcome the limiting factor of conventional ozone-based wastewater conversion. This study introduces a sequential system that combi...

To date, inorganic halide perovskite nanocrystals show promising contributions in emerging luminescent materials due to their high tolerance to defects. In particular, the development of cesium lead iodide (CsPbI 3) has shown its efficiency for light-harvesting properties. However, further implementation is hindered due to the toxicity of the lead...

In the past decades, the invention of scanning probe microscopy (SPM) as the versatile surface-based characterization of organic molecules has triggered significant interest throughout multidisciplinary fields. In particular, the bond-resolved imaging acquired by SPM techniques has extended its fundamental function of not only unraveling the chemic...

This study aims to prepare titanium dioxide (TiO2) with a narrower band gap, namely black TiO2, using sodium tetrahydroborate (NaBH4) as a reducing material with different mixing ratios and microwave heating, which is a faster, greener, and simpler method than the existing method using furnace heating. Scanning electron microscopy (SEM) inspections...

The beneficiation of low‐grade phosphate ore leads to the production of a substantial quantity of phosphate tailings, thereby not only occupying land but also endangering the environment and potentially posing safety concerns. In this work, extrusion molding, steam‐curing, and calcined phosphate tailings are employed to fabricate lightweight wall m...

This study reported a novel technique for spray coating zinc oxide (ZnO) on one side of fiberglass (FG) substrate and chitosan (CS) on the opposite side, resulting in the production of ZnO/FG/CS composite. This strategy alters the morphology of the pure FG, creating smooth and rough surfaces on the CS and ZnO sides, respectively. ZnO/ FG/CS demonst...

Objective: This research aims to prepare and characterize Andrographis paniculata ethanol extract nanoparticles using Poly-Lactic-co-Glycolic Acid (PLGA) and test the toxicity of the nanoparticles in vitro in Raw 264.7 macrophage cells. Methods: A. paniculata ethanol extract-PLGA nanoparticles were prepared using the solvent evaporation method. The...

The upsurge of interest in the emergence of photocatalytic fuel cell systems (PFC) presents an efficient and environmentally friendly approach to wastewater treatment. In this work, a Z-scheme coupled with an S-scheme heterojunction electrode was used in the PFC, utilizing TiO2/GO/g-C3N4 as the photoanode and BiOAc1–xBrx/BiOBr as the photocathode....

Sugar cane bagasse (SB) was modified with cetyltrimethylammonium bromide (CTAB), followed by impregnation with zinc oxide (ZnO) to create a synergistic adsorption and photocatalytic system for methyl orange (MO) and methylene blue (MB) removal. The presence of CTAB and ZnO was confirmed by X-ray diffraction, Fourier transform infrared, and energy d...

To date, the piezoelectric field has been demonstrated as a promising approach to inhibit the recombination of photogenerated carrier in photocatalyst applications. Herein we propose a MoS2/Bi4O5Br2/PVDF-HFP piezo-photocatalytic film in the organic pollutants remediation. MoS2/Bi4O5Br2 as the photocatalytic material is incorporated to poly(vinylide...

Recent interest in two-dimensional (2D) lead-free hybrid organic–inorganic perovskites (HOIPs) has driven significant progress in the development of magnetic and electronic materials. Herein, we systematically compare a series of low-temperature growth of 2D cobalt-based HOIPs (Co-HOIPs) by varying the methylene chain length (n) of n = 1, 2, 3, and...

The development of X‐ray scintillators with ultrahigh light yields and ultrafast response times is a long sought‐after goal. In this work, a fundamental mechanism that pushes the frontiers of ultrafast X‐ray scintillator performance is theoretically predicted and experimentally demonstrated: the use of nanoscale‐confined surface plasmon polariton m...

Lead halide perovskites have shown impressive potential in the field of optoelectronics, but their toxicity has prompted exploration into alternative materials such as copper-based perovskites. The synthesis of these materials typically involves solution processing with hazardous chemicals, highlighting the necessity for more environmentally friend...

In recent years, the investigation of 2D hybrid perovskite structures has become increasingly popular. However, there is a gap in the vibrational behavior of lead-free halide perovskites, especially Cu types. In this study, X2CuCl4 was used (X = MA, EA, PMA, and PEA) as samples which were analyzed by FTIR and Raman spectroscopy. With increasing cha...

Recently, two-dimensional hybrid organic-inorganic perovskites (2D-HOIPs) have emerged in popularity due to ease of tunability in terms of the structure and properties. However, a systematic chemistry and physical description of cobalt-based system is lacking. In this study, we employ X-ray diffraction, Raman spectroscopy and electrochemical impeda...

Bismuth-based hybrid organic-inorganic perovskites (Bi-HOIPs) are developed as lead-free halide perovskites due to their low toxicity and good stability. In this study, the incorporation of ionic liquid (IL) cations in the Bi-HOIPs structure, namely 1-butyl-1-methylpyrrolidinium (BMP) and 1-(3-aminopropyl) imidazole (API), are investigated. Bi-base...

The persistent issue of ceramic membrane fouling poses significant challenges to its widespread implementation. To address this concern, ozone nanobubbles (ozone-NBs) have garnered attention due to their remarkable mass transfer efficiency. In this investigation, we present a novel ozone-NB generator system to effectively clean a fouled ceramic mem...

Glass formation in zeolitic imidazolate frameworks (ZIFs) has garnered significant attention in the field of metal–organic frameworks (MOFs) in recent years. Numerous works have been conducted to investigate the microscopic mechanisms involved in the melting–quenching process of ZIFs. Understanding the density variations that occur during the melti...

Methyl Blue merupakan salah satu limbah tekstil yang dapat memberikan kontribusi terhadap pencemaran lingkungan dengan sifat karsinogenik dan mutagenik. Terdapat lebih dari 700.000 ton bahan pewarna yang diproduksi tiap tahun dengan 10.000 jenis pewarna dan sekitar 20% dari zat warna tekstil yang telah digunakan akan terbuang bersama limbah pada ta...

The recent surge of interest in low-dimensional lead-free copper halide perovskites (CHPs) has driven significant progress in optoelectronics and scintillating materials. However, the development of green-based synthetic routes for CHPs, aimed at creating fast-decaying scintillators with ultrasensitive X-ray detection, remains elusive. In this stud...

The uncontrolled use of ciprofloxacin (CIP) has led to increased resistance in patients and potential health issues such as kidney disorders, digestive disorder, and liver complications. This study addresses these concerns by introducing an innovative electrochemical sensor utilizing a screen-printed electrode (SPE) enhanced with a novel rGO-SnO2 n...

Enhancing two-dimensional perovskite crystals, low-temperature-solution-grown scintillators exhibit > 10 photons/keV light yield and < 10 ns decay time. Optical and scintillation properties are tuned by replacing ions and adding ion doping for timing and spectral applications.

MXenes, a class of two-dimensional materials, have garnered significant attention due to their versatile surface chemistry and customizable properties. In this study, we investigate the work function (WF) tuning capabilities of MXene Ti 3 C 2 T x , where T x denotes the surface termination, synthesized via both conventional hydrogen fluoride-etched...

Work function (WF) of perovskite materials is essential in developing optoelectronic devices enabling efficient charge transfer at their interface. Perovskite's WF can be tuned by MXenes, a new class of two-dimensional (2D) early transition metal carbides, nitrides, and carbonitrides. Their variable surface terminations or the possibility of introd...

Rational design is an important approach to consider in the development of low-dimensional hybrid organic−inorganic perovskites (HOIPs). In this study, 1-butyl-1-methyl pyrrolidinium (BMP), 1-(3-aminopropyl)imidazole (API), and 1-butyl-3-methyl imidazolium (BMI) serve as prototypical ionic liquid components in bismuth-based HOIPs. Element-sensitive...

The intricate role of temperature in the structure–property relationship of manganese oxide nanoparticles (Mn3O4 NPs) remains an open question. In this study, we successfully synthesized Mn3O4 NPs using the hydrothermal method with two differing temperatures, namely, 90 and 150 °C. Interestingly, a smaller average particle size is found when Mn3O4...

Designing dual electron transfer channels to achieve efficient carrier separation and understanding the corresponding mechanisms for CO2 photoreduction is of great significance. However, it is still challenging to find desirable model to achieve optimal photocatalytic performance. Herein, first-principles calculations and machine learning were comb...

The practicality of electrochemical water-splitting technology relies on the development of novel and efficient bifunctional electrocatalysts capable of facilitating both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Black phosphorus (BP) holds tremendous promise for HER and OER electrocatalysis owing to its fully expos...

Electrocatalysts play a pivotal role in the electrochemical water splitting process to produce hydrogen fuel. The advancement of this technology relies on the development of efficient, cost-effective, and readily available electrocatalysts. Two-dimensional (2D) MXene materials have garnered significant attention due to their unique physicochemical...

Photocatalysis is a green and environmentally-friendly process that utilizes the ubiquitous intermittent sunlight. To date, an emerging S-scheme heterojunction across the intimately coupled heterojunction materials is proposed to surpass the efficiency of conventional II-type and Z-type photocatalysis. Furthermore, S-scheme heterojunction photocata...

There are works have reported the crystal structures and mechanical properties of ferrite cement (C4AF) at the atomic scale with deviation owing to the omission of the Coulomb interaction effect (Ueff) between 3d electrons of Fe in C4AF. In this work, the DFT+U method was used to evaluate its effect on their electronic structures and mechanical pro...

Black phosphorus (BP) is incorporated in the electrochemical detection of uric acid (UA) to form few layers of BP nanosheets (BPNS)-modified glassy carbon electrodes (BPNS/GCE), investigated by means of ultrasound-assisted liquid-phase exfoliation. We find a significant increase in the peak current magnitude and positive potential shift in the elec...

Recent advancement on the hydrogen (H2) retrieval in a mixture gas of H2/CO2 based on the metal hydride (MH) technique has attracted numerous interest. In this work, we implement the lumped element model simulation to conduct a theoretical approach on the hydrogen purification process. The influence of orifice geometry and temperature of the tank i...

Recent advancement on hydrogen (H2) retrieval in a mixture gas of H2/CO2 based on the metal hydride (MH) technique has attracted numerous interests. In this work, we implement the lumped element model simulation to conduct a theoretical approach on the hydrogen purification process. The influence of orifice geometry and temperature of the tank, and...

Photoelectrochemical cell (PEC) has the same working principle as solar cell which convert solar energy into electricity. PEC consists of photoanode, electrolyte, and counter electrode, where electrolyte plays an important role in determining PEC performance. Yttria-stabilized zirconia (YSZ) is the most suitable electrolyte used due to its high ion...

The emergence of two-dimensional (2D) hybrid metal-halide perovskites has garnered significant attentions for optoelectronic devices and light-emitting applications. Since the toxicity of lead-based perovskites could potentially be harmful to the environment, several works have attempted to change the active metal to tin (Sn). Here, we investigate...

Tricobalt tetroxide (Co3O4) has been developed as a promising photocatalyst material for various applications. Several reports have been published on the self-modification of Co3O4 to achieve optimal photocatalytic performance. The pristine Co3O4 alone is inadequate for photocatalysis due to the rapid recombination process of photogenerated (PG) ch...

The use of solar energy as an inexhaustible resource to conduct photocatalytic water splitting in hydrogen (H2) production can alleviate the worldwide energy crisis and achieve carbon neutrality. However, research in photocatalytic H2 evolution reaction (HER) is extremely challenging in terms of exploring the current development of an active and du...

In the past decades, perovskite-based materials have demonstrated excellent performances in the wide range of applications, including chemosensing. Owing to their unique structure-property relationship, chemosensing applications become one of the point of interests that intrigued researchers from various backgrounds. Recently, several studies have...

As a flexible porous material, the amorphous behavior of zeolitic imidazolate framework‐8 (ZIF‐8) has garnered considerable interest. However, the association between its strain behavior and topology has not yet been exhaustively studied computationally. We perform molecular dynamic simulations on both ZIF‐8 and its topological silicate isomer soda...

Scintillators fabricated from organic−inorganic layered perovskites have attracted wide attention due to their excellent properties, including fast decay times, superior light yield, and high exciton binding energy. In relation to their optoelectronic properties, hybrid organic−inorganic perovskites are known for their tunability, which could be ma...

The intricate nature of various textile manufacturing processes introduces colored dyes, surfactants, and toxic chemicals that have been harmful to ecosystems in recent years. Here, a combination ozone-based advanced oxidation process (AOP) is coupled with a nanobubbles generator for the generation of ozone nanobubbles (NB) utilized the same to tre...

Inorganic scintillators play a major role in ionizing radiation detection due to their high versatility to detect multiple radiation sources such as X-rays, gamma-rays, alpha, beta, and neutron particles, and their fast and high light yield, making them especially convenient for imaging, spectroscopy, and timing applications. Scintillators-based de...

The direct electrocatalytic synthesis of urea from nitrogen (N2) and carbon dioxide (CO2) under mild conditions is of great significance to promoting energy and environmental strategies. However, the current strategy operated at mild conditions suffer many technical bottlenecks, such as a complex synthesis process, high overpotential of an electroc...

Aluminum alloy 5052 (Al 5052) is one of the metals used as a bipolar plate in a Proton Exchange Membrane Fuel Cell (PEMFC) due to has its light mass and being easy to form, and, has high conductivity and resistivity properties. This material is prone to corrosion and current knowledge to protect its surface is currently lacking. The product of PEMF...

Four large-scale amorphous zeolite imidazolate frameworks (a-ZIFs) have been constructed based on the continuous random network model. Structural properties correlation (SPC) between the mechanical properties and structural order (short-range, mid-range, or long-range orders) of ZIFs samples have been investigated by well-defined density functional...

Ammonia (NH3) detection at the early stage is an important precaution for human health and agricultural production. However, conventional sensing materials are difficult to achieve all the targeted operational performances such as low power consumption and high selectivity. MXenes are a type of graphene-like emergent material equipped with abundan...

Decabromodiphenyl ether (BDE209) is a persistent aromatic compound widely associated with environmental pollutants. Given its persistence and possible bioaccumulation, exploring a feasible technique to eradicate BDE209 efficiently is critical for today’s environmentally sustainable societies. Herein, an advanced nanocomposite is elaborately constru...

The upsurge of low-dimensional Dion–Jacobson (DJ) phase perovskites brought significant interests in view of their appealing stability against harsh environmental conditions as well as their promising performance in optoelectronic applications. Few reports to date have concentrated on the fundamental relationship of fine-tuning control of diamine-b...

Zirconium carbide (ZrC) and hafnium carbide (HfC) have been identified as ultrahigh temperature ceramics with excellent thermal conductivity performance. The temperature profiles of ZrC and HfC have been studied; however, the temperature‐dependent of solid solution of (Zr0.5Hf0.5)C is still lacking. Herein, we report the temperature‐dependent elast...

Single-atom catalysts (SACs) have been widely used in heterogeneous catalysis owing to the maximum utilization of metal-active sites with controlled structures and well-defined locations. Upon tailored coordination with nitrogen atom, the metal-nitrogen (M-N)-based SACs have demonstrated interesting physical, optical and electronic properties and h...

Electrocatalysis offers a promising alternative to the high demand for energy consumption and environmentally polluting Haber–Bosch process of industrial ammonia synthesis. Herein, using first-principles calculations based on the density functional theory, we successfully predicted that Fe&Ni@Mo2CS2 diatomic catalysts with excellent electrocatalyti...

Two-dimensional hybrid organic-inorganic perovskites (2D-HOIPs) possess intriguing structural properties which makes them promising materials for diverse optical, electronic and scintillation applications. Recently, several classes of hybrid perovskites exhibit potential candidate for radiation detection. However, the scintillation properties of co...

Two-dimensional (2D) perovskite crystals, A 2 XY 4 (A = PEA, BA; X = Pb, Sn, Cu, Mn; Y = Cl, Br, I) have been subject of interest for solution-processable scintillators for the past 2 decades due to the possibility to grow high-quality and large crystals with low-cost techniques. We started from PEA 2 PbBr 4 and BA 2 PbBr 4 , which have light yield...

The emergence of Mo2C-based catalysts in recent years has been favored as promising contender within diverse class MXenes. In terms of rapid development in the photocatalytic application, these intriguing compounds exhibit excellent photocatalytic performance because of their superior optical properties and peculiar structure characteristics. Unfor...

The tunable control in the inorganic octahedral framework of hybrid perovskites offers potential applications in photovoltaics, solid-state lighting, and radiation detection. However, the implication of the structure and optoelectronic properties pose challenges due to competition between organic− inorganic coupling and intraoctahedral interactions...

Reliable, inexpensive, environment-friendly, and durable properties of carbon materials with unique and outstanding photoelectric performance is highly desired for myriad of applications such as catalysis and energy storage. Since lattice modulation is a vital method of surface modification of materials, which form by an external force during the s...

We demonstrate growth of gallium phosphide (GaP) segments within indium phosphide (InP) nanowires (NWs), which forms GaP/InP heterostructure NWs. The GaP segments emit visible wavelength photoluminescence (PL) at 540 and 620 nm with and without growth interruption during growth, respectively, while the emission decay times are 8.0 and 6.0 ns, respe...

Double perovskites are materials exhibiting excellent properties for a variety of optical and electrical applications. In this paper, we characterize the structural, electronic, optical, electrical and scintillation properties of two variants of lead-bismuth halide double perovskite, with the general chemical composition of Cs4PbBi2X12 (X= Br, I)....

Understanding spin control mechanisms is an important part of condensed matter physics and the theoretical basis for designing spintronic devices. In this letter, based on four-sublattices molecular field theory, we propose that the underlying NdFe1-xCrxO3 magnetic mechanism is driven by spin reorientation sensitive to temperature. The actual coupl...

The chemical bond is of central interest in chemistry, and it is of significance to study the nature of intermolecular bonds in real‐space. Herein, non‐contact atomic force microscopy (nc‐AFM) and low‐temperature scanning tunneling microscopy (LT‐STM) are employed to acquire real‐space atomic information of molecular clusters, i.e., monomer, dimer,...

Polycyclic hydrocarbons (PHs) share the same hexagonal structure of sp2 carbons as graphene but possess an energy gap due to quantum confinement effect. PHs can be synthesized by a bottom-up strategy starting from small building blocks covalently bonded into large 2D organic sheets. Further investigation of the role of the covalent bonding/coupling...

Solution-processed hybrid organic-inorganic lead halide perovskites are potential for next generation X-ray imaging applications. Here, we discuss the effect of Pb replacement with Cu and Sn on the optical and scintillation properties of highlight yield and fast crystal scintillator of BA2PbBr4. By replacing Pb with Cu and Sn, the measured bandgap...

2D platinum ditelluride (PtTe2) has received significant attention for 2D photodetector applications due to its novel physical properties. One of the critical factors that affect device performance is the film quality. Here, using molecular beam epitaxy, we investigate the role of growth temperature in determining the film quality of PtTe2 on highl...

Well-ordered spin arrays are desirable for next-generation molecule-based magnetic devices, yet their synthetic method remains a challenging task. Herein, we demonstrate the realization of two-dimensional supramolecular spin arrays on surfaces via halogen-bonding molecular self-assembly. A bromine-terminated perchlorotriphenylmethyl radical with ne...

In recent years, the study of the glassy structure of zeolitic imidazolate frameworks (ZIFs) has been a key breakthrough in glass science. Yet the theoretical understanding of the structure of these complex materials is still in its infancy, especially the short-range structure. The short-structural disorder of two ZIFs and their corresponding molt...

Unique performance on the hybrid organic-inorganic halide perovskites (HOIPs) have attracted great attention due to their continuous exploration and breakthrough in a multitude of energy-related applications. However, the instability and lead-induced toxicity that arise in bulk perovskites are the two major challenges that impede their future comme...

Black phosphorus (BP) as an uprising two-dimensional material exhibits attractive potential in the field of electrocatalysis due to the inherent advantages of high carrier mobility and abundant lone pair electrons. However, the exposed active electrons compel BP to be deactivated by oxidative degradation. Herein, the electronic signature of accepto...

Unique performance on the organic-inorganic hybrid halide perovskites have attracted great attention due to their continuous exploration and breakthrough in a multitude of energy-related applications. However, the instability and lead-induced toxicity that arise in bulk perovskites are the two major challenges that impede their future commercializa...

First order metal-insulator transition (MIT) observed in strongly correlated systems such as vana-dium dioxide (VO2) hold potential in electronics, energy, to optical applications. Starting from a vanadium diselenide (VSe2) bulk crystal, we demonstrated a direct surface conversion from VSe2 to VO2 via laser exposure in ambient condition. The proces...