Atittaya Naikaew

• PhD Student at Mahidol University

Printable planar carbon electrodes present a cost‐effective and highly promising alternative to thermally evaporated metals, serving as the rear contact for stable perovskite solar cells (PSCs). However, the power conversion efficiencies (PCEs) of the carbon‐based PSCs (C‐PSCs) are notably lower compared to those of state‐of‐the‐art PSCs. The infer...

Developing cost-effective, high-efficiency, and stable hole transporting materials (HTMs) is crucial for replacing traditional spiro-OMeTAD in perovskite solar cells (PSCs) and achieving sustainable solar energy solutions. This work presents two novel air-stable HTMs based on a spiro[fluorene-9,9′-xanthene] (SFX) core functionalized with N-methylca...

With high efficacy for electron-photon conversion under low light, perovskite materials show great potential for indoor solar cell applications to power small electronics for internet of things (IoTs). To match the spectrum of an indoor LED light source, triple cation perovskite composition was varied to adjust band gap values via Cs and Br tuning....

Perovskite materials are fascinating candidates for the next-generation solar devices. With long charge carrier lifetime, metal-halide perovskites are known to be good candidates for low-light harvesting. To match the irradiance spectra of indoor light, we configured a triple-cation perovskite material with appropriate content of bromide and chlori...

Solution-processed organic–inorganic hybrid perovskite solar cells are among the candidates to replace the traditional silicon solar cells due to their excellent power conversion efficiency (PCE). Despite this considerable progress, understanding the properties of the perovskite precursor solution is critical for perovskite solar cells (PSCs) to ac...

The fast-drying spray deposition (FDSD) technique for perovskite solar cells (PSCs) is developed to enable the stacking of perovskite absorbers with different work functions, which allows the creation of an additional built-in electric field at the interface during the fermi level realignment process upon contact. FDSD is functional under high rela...

Rapid advancements in perovskite materials have led to potential applications in various optoelectronic devices, such as solar cells, light-emitting diodes, and photodetectors. Due to good photoelectric properties, perovskite enables low-cost and comparable performance in terms of responsivity, detectivity, and speed to those of the silicon counter...

Perovskite materials have gained a lot of interest in LED application because of their excellent properties, such as direct band gap nature, high photoluminescence quantum efficiency (PLQE), high charge carrier mobility, pure color emission with small full width at half maximum, and low non-radiative recombination rate. In this work, we for the fir...

Quasi‐2D perovskites strike a good balance between high performance and stability for solar cell applications. Formamidinium iodide doping could improve thermal stability and broaden optical absorption, yet tends to cause poor morphology. The work featured on this cover presents a new strategy to optimize the morphology, electronic properties, and...

Perovskite materials show excellent photovoltaic performance along with simple processing and low‐energy requirement. Even with high power conversion efficiency (PCE), instability to moisture is still a major challenge. An effective method to enhance perovskite stability is by reducing dimensionality through incorporation of long organic cations in...

Perovskite materials are emerging as suitable materials for low-cost, high efficiency optoelectronics. In this study, we reported the surface modification of 2D (PEA)2PbBr4 for violet emission using PEG doping followed by a newly developed step called swift cation doping (SCD) where phenylethylammonium cations (PEA⁺) in isopropanol (IPA) are abrupt...

Carmine particles which were prepared by precipitating natural cochineal extract with tin ions were incorporated into a solid-state composite poly(ethylene oxide) electrolyte (CPE). The conductivity of the modified CPE as calculated from the electrochemical impedance spectra, was increased with increasing amount of carmine varied from 10%w/w to 48%...

Modulated surface photovoltage (SPV) spectra have been correlated with the phase composition in layers of CH3NH3PbI3 (MAPbI3) prepared from MAI and PbCl2 and annealed at 100 °C. Depending on the annealing time, different compositions of MAPbI3, MAPbCl3, MACl, PbI2, and an un-identified phase were found. It has been demonstrated that evaporation of...