Haining Tian

Haining Tian
Uppsala University | UU · Department of Chemistry - Ångström Laboratory

PhD

About

95
Publications
17,971
Reads
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6,126
Citations
Citations since 2017
42 Research Items
3009 Citations
20172018201920202021202220230100200300400500
20172018201920202021202220230100200300400500
20172018201920202021202220230100200300400500
20172018201920202021202220230100200300400500
Additional affiliations
November 2018 - present
Uppsala University
Position
  • Lecturer
May 2018 - October 2018
Uppsala University
Position
  • Lecturer
June 2016 - present
Uppsala University
Position
  • Professor (Associate)

Publications

Publications (95)
Article
Organic semiconductor-microbial photosynthetic biohybrid systems show great potential in light-driven biosynthesis. In such a system, an organic semiconductor is used to harvest solar energy and generate electrons, which can be further transported to microorganisms with a wide range of metabolic pathways for final biosynthesis. However, the lack of...
Article
Full-text available
To gain a deeper understanding of the underlying charge processes in dye sensitized photocathodes, lateral electron hopping across dye-sensitized NiO photocathodes was investigated. For dye-sensitized systems, hole hopping across photoanodes has been studied extensively in the literature but no expansive studies on electron hopping in sensitized ph...
Article
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Production of renewable fuels from solar energy and abundant resourses, such as water and carbon dioxide, via photocatalytic reactions is seen as a promising strategy to adequately address the climate challenge. Photocatalytic systems based on organic polymer nanoparticles (PNPs) are seen as one avenue to transform solar energy into hydrogen and ot...
Article
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A semiartificial photosynthesis approach that utilizes enzymes for solar fuel production relies on efficient photosensitizers that should match the enzyme activity and enable long-term stability. Polymer dots (Pdots) are biocompatible photosensitizers that are stable at pH 7 and have a readily modifiable surface morphology. Therefore, Pdots can be...
Article
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A biomimetic model complex of the [FeFe]-hydrogenase active site (FeFeOH) with an ethylene bridge and a pendant hydroxyl group has been synthesized, characterized and evaluated as catalyst for the light-driven hydrogen production. The interaction of the hydroxyl group present in the complex with 3-isocyanopropyltriethoxysilane provided a carbamate...
Article
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Aqueous dispersed conjugated polymer dots (Pdots) have shown promising application in photocatalytic hydrogen evolution. To efficiently extract photogenerated charges from type-II heterojunction Pdots for hydrogen evolution, the mechanistic study of photophysical processes is essential for Pdot optimization. Within this work, we use a PFODTBT donor...
Article
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(*) see ref.: "ACS Nano 2021, 15 (8), 13504−13515" DOI: 10.1021/acsnano.1c04126 or Hal-cea-03321066v1
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Water electrolysis powered by renewable energies is a promising technology to produce sustainable fossil free fuels. The development and evaluation of effective catalysts are here imperative; however, due to the inclusion of elements with different redox properties and reactivity, these materials undergo dynamical changes and phase transformations...
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The photophysical properties of Cu-deficient Cu0.2In1Sx quantum dots synthesized through a facile aqueous-based procedure have been investigated. Transient absorption experiments were carried out probing in the UV–vis, near-IR, and mid-IR regions, with the aim to (i) study the photophysical properties of the quantum dots and (ii) monitor kinetics o...
Article
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Surface states of mesoporous NiO semiconductor films have particular properties differing from the bulk and are able to dramatically influence the interfacial electron transfer and adsorption of chemical species. To achieve a better performance of NiO-based p-type dye-sensitized solar cells (p-DSCs), the function of the surface states has to be und...
Cover Page
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Highly fluorescent carbon dots based on aspartic acid are synthesized and employed as a photosensitizer to drive photocatalytic hydrogen evolution with an [FeFe] hydrogenase in self-assembly systems, which has been systematically investigated to understand the electron transfer dynamics and its impact on photocatalysis efficiency.
Article
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Artificial photosynthesis, i.e., the conversion of light to chemical energy, is seen as a path to a more sustainable energy future. In this work, highly fluorescent aspartic acid-based carbon dots are synthesized and employed as photosensitizer to drive photocatalytic hydrogen evolution with an [FeFe] hydrogenase (CrHydA1). The direct interaction i...
Article
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Mesoporous NiO photocathodes containing the push-pull dye PB6 and alkyl-derivatized cobaloxime catalysts were prepared using surface amide couplings and analyzed for photocatalytic proton reduction catalysis. The length of the alkyl linker used to derivatize the cobalt catalysts was found to correlate to the photocurrent, with the highest photocurr...
Article
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In order to meet the ever-growing global energy demand with affordable and clean energy, it is essential to provide this energy by renewable resources and consider the eco-efficiency of the production and abundance of the utilised materials. While this is seldomly discussed for technologies still in the research state, addressing the issue of sustaina...
Article
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While half‐reactions using organic photocatalysts for hydrogen production are encouraging, systems with high efficiency without using sacrificing electron donors (SED) and showing full overall water‐splitting are still largely absent. Critical factors that are limiting the overall water‐splitting using organic photocatalysts are summarized, with a...
Article
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In pursuit of inexpensive and earth abundant photocatalysts for solar hydrogen production from water, conjugated polymers have shown potential to be a viable alternative to widely used inorganic counterparts. The photocatalytic performance of polymeric photocatalysts, however, is very poor in comparison to that of inorganic photocatalysts. Most of...
Article
A facile surface-amide coupling method was examined to attach dye and catalyst molecules to silatrane-decorated NiO electrodes. Using this method, electrodes with a push-pull dye were assembled, and characterized by photoelectrochemistry and transient absorption spectroscopy. The dye-sensitized electrodes exhibited hole injection into NiO and good...
Article
The study of p-type dye sensitized solar cells (p-DSCs) is appealing but challenging. Although the devices have been studied for 20 years, light conversion efficiency is lag far behind those of n-DSCs. Very recently, on the basis of a core-shell structure, a novel solid-state p-DSC (p-ssDSCs) has been fabricated, which showed great enhancement in o...
Chapter
Energy is an important area of contemporary research, with clear societal benefits. It is a fast-developing and application-driven research area, with chemistry leading the discovery of new solids, which are then studied by physicists and materials scientists. Solar Energy Capture Materials introduces a range of the different inorganic materials us...
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Heavy metal-free CuInS2 quantum dots (QDs) were employed as photosensitizer on a NiO photocathode to drive an immobilized molecular Re catallyst for photoelectrochemical CO2 reduction for the first time. A...
Article
An indacenodithieno[3,2‐b]thiophene (IDTT) unit has been used as linker moiety to design a new p‐type dye ,TIP, for solid‐state p‐type dye‐sensitized solar cells. Solar cells based on the TIP dye offered an efficiency of 0.18% with an open‐circuit photovoltage of 550 mV and a short‐circuit photocurrent density of 0.86 mA·cm‐2, which is better than...
Article
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Fabrication of solid state p-type dye sensitized solar cells (p-ssDSCs) by using electron transport materials instead of the conventional I⁻/I3⁻ redox couple in liquid devices can completely eliminate the liquid phase and enhance the photovoltage. The performance of p-ssDSCs has been improved by optimizing dyes and electron transport materials. Mor...
Article
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Mimicking the nature is always beneficial for improving the performance of artificial system. The artificial photosynthesis as hydrogen production is one of the examples where we can find a big inspiration in nature. In this study, polymer nanoparticles (Pdots) prepared with a photoactive polymer PFODTBT and amphiphilic co-polymer under ultra-sonic...
Article
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Correction for ‘Ultrafast dye regeneration in a core–shell NiO–dye–TiO 2 mesoporous film’ by Lei Tian et al. , Phys. Chem. Chem. Phys. , 2018, 20 , 36–40.
Article
A solution-processed NiO-dye-ZnO photocathode was developed for applications in both solid-state p-type dye-sensitized solar cells (p-ssDSCs) and p-type dye-sensitized photoelectrosynthesis cells (p-DSPECs). In p-ssDSCs, the solar cell using ZnO as electron transport material showed a short circuit current, up to 680 µA cm⁻², which is 60-fold large...
Chapter
Dye-sensitized solar cells represent a type of device which converts solar energy into electricity based on molecular components. This is an attractive alternative for solar energy conversion because such devices can be made as low-cost, colorful, and transparent solar cell in contrast to the traditional semiconductor-based solar cells. In this cha...
Article
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Covalently linking photosensitizers and catalysts in an inorganic-organic hybrid photocatalytic system is beneficial for efficient electron transfer between these components. However, general and straightforward methods to covalently attach molecular catalysts on the surface of inorganic semiconductors are rare. In this work, a classic rhenium bipy...
Article
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Co-sensitization of molecular dyes and catalysts on semiconductor surfaces is a promising strategy to build photoelectrodes for solar fuel production. In such a photoelectrode, understanding the charge transfer reactions between the molecular dye, catalyst and semiconductor material is key to guide further improvement of their photocatalytic perfor...
Article
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Solid state p-type dye sensitized NiO-dye-TiO2 core-shell solar cells with an organic dye PB6 were successfully fabricated for the first time. With Al2O3 as an inner barrier layer, the recombination...
Article
A Cu2O-ZnO-hydrogenase photocathode possessed enzyme/semiconductor junction has been constructed by immobilizing a biological protein catalyst, hydrogenase-CrHydA1 enzyme on the ZnO protected Cu2O electrode. With light illumination, a photocurrent of 0.8 mA/cm² at 0.15 V vs. RHE was obtained and hydrogen was successfully detected from the photocath...
Book
This book shows the different molecular devices used for solar energy conversion and storage and the important characterization techniques for this kind of device. It has five chapters describing representative molecule-based solar cells, such as organic solar cells, dye-sensitized solar cells and hybrid solar cells (perovskite solar cell and quant...
Article
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In this study, a core-shell NiO-Dye-TiO2 mesoporous film was fabricated for the first time, utilizing atomic layer deposition technique and a newly designed triphenylamine dye. The structure of the film was confirmed by SEM, TEM, and EDX. Excitation of the dye led to efficient and fast charge separation, by hole injection into NiO, followed by an u...
Article
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In this work, we report a highly efficient organic polymer nano-dots (Pdots) photocatalyst based on PFODTBT polymer for light driven proton reduction. The system renders an initial rate of hydrogen evolution up to 50±0.5 mmol g-1 h-1, which is the fastest rate among all reported organic photocatalysts. It eventually produced an amount of H2, 63±2 m...
Article
The most common material for dye-sensitized photocathodes is mesoporous NiO. We transformed the usual brownish NiO to be more transparent by reducing high valence Ni impurities. Two pretreatment methods have been used: chemical reduction by NaBH4 and thermal reduction by heating. The power conversion efficiency of the cell was increased by 33% thro...
Article
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A covalently-linked organic dye-cobaloxime catalyst system is developed by facile click reaction for mechanistic studies and application in dye sensitized solar fuel device based on mesoporous NiO. This system has been systematically investigated by photoelectrochemical measurements, density functional theory, time resolved fluorescence, transient...
Article
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We measured the adsorption characteristics of two organic dyes; triphenylamine-cyanoacrylic acid (TPA-C) and phenoxazine (MP13), on TiO2, directly in a solution based on quartz crystal microbalance (QCM). Monitoring the adsorbed amount as a function of dye concentration and during rinsing allows determination of the equilibrium constant and distinc...
Article
Mesoporous NiO films were co-sensitized with a coumarin 343 dye and a proton reduction catalyst of the [Fe2(CO)6(bdt)] (bdt = benzene-1,2-dithiolate) family. Femtosecond UV/Vis transient absorption experiments directly demonstrated sub-picosecond hole injection into NiO from excited dyes followed by rapid (t50% ≈ 6 ps) reduction of the catalyst on...
Article
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In the present work we report a facile and readily-scalable electrochemical anodization technique for preparation of superhydrophilic TiO2 films having reversible wettability properties. The electrochemically anodized Titanium (Ti) foils manifest nanoscale topographical features, interconnected nanowebs and nanofibrils, that enhance both surface ro...
Article
For the first time, organic semiconducting polymer dots (Pdots) based on poly[(9,9′-dioctylfluorenyl-2,7-diyl)-co-(1,4-benzo-2,1′,3 thiadiazole)] (PFBT) and polystyrene grafting with carboxyl-group-functionalized ethylene oxide (PS-PEG-COOH) are introduced as a photocatalyst towards visible-light-driven hydrogen generation in a completely organic s...
Article
For the first time, organic semiconducting polymer dots (Pdots) based on poly[(9,9′-dioctylfluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1′,3} thiadiazole)] (PFBT) and polystyrene grafting with carboxyl-group-functionalized ethylene oxide (PS-PEG-COOH) are introduced as a photocatalyst towards visible-light-driven hydrogen generation in a completely organic...
Article
Two new dyes, E1 and E2, equipped with triphenylamine as electron donor, an oligothiophene as linker and different electron acceptor groups, have been designed and synthesized as photosensitizers for p-type dye-sensitized solar cells (p-DSCs). A systematic study of the effect of molecular structures on the observed photophysical properties, the ele...
Article
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Hole-transport materials (HTMs) play an important role as hole scavenger materials in the most efficient perovskite solar cells (PSCs). Here, for the first time, two Ag-based metal organic complexes (HA1 and HA2) are employed as a new class of dopant-free hole-transport materials for the application in PSCs. These HTMs show excellent conductivity a...
Article
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Solid state p-type dye-sensitized solar cells (p-ssDSCs) have been proposed and fabricated for the first time, using the organic dye P1 as the sensitizer on mesoporous NiO and phenyl-C61-butyric acid methyl ester (PCBM) as the electron conductor. The p-ssDSC has shown an impressive open circuit photovoltage of 620 mV. Femtosecond and nanosecond tra...
Article
As one of the components in a tandem photoelectrochemical cell for solar-fuel production, the photocathode carries out the reduction reaction to convert solar light and the corresponding substrate (e.g., proton and CO2 ) into target fuels. Immobilizing molecular catalysts onto the photocathode is a promising strategy to enhance the interfacial elec...
Article
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A cobalt-based molecular catalyst was successfully grafted to fullerene derivative via ‘click’ chemistry on electrode for both electro-catalytic and light driven water reduction. Using an organic photovoltaic electrode immobilized with cobalt catalyst as photocathode, the photoelectrochemical cell displayed stable photocurrent
Article
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Dipicolinic acid was investigated as a new anchoring group for DSSCs. A pilot dye () bearing this new anchoring group was found to adsorb significantly stronger to TiO2 than its cyanoacrylic acid analogue. The electrolyte composition was found to have a strong effect on the photoelectrochemical properties of the adsorbed dye in the device, allowing...
Article
In article number 1402340, Licheng Sun and co-workers report the use of a lowcost organic solvent, 1,1,2,2-tetrachloroethane (TeCA), as an additive for the well-known p-type organic hole transport material-2,2',7,7'-tetrakis-(N,N-di-pmethoxyphenyl-amine)-9,9'spiro-bifluorene (Spiro-OMeTAD). It is found that this significantly increases the conducti...
Article
Two carbazole-based small molecule hole-transport materials (HTMs) are synthesized and investigated in solid-state dye-sensitized solar cells (ssDSCs) and perovskite solar cells (PSCs). The HTM X51-based devices exhibit high power conversion efficiencies (PCEs) of 6.0% and 9.8% in ssDSCs and PSCs, respectively. These results are superior or compara...
Article
A series of triphenylamine-based small molecule organic hole transport materials (HTMs) with low crystallinity and high hole mobility are systematically investigated in solid-state dye-sensitized solar cells (ssDSCs). By using the organic dye LEG4 as a photosensitizer, devices with X3 and X35 as the HTMs exhibit desirable power conversion efficienc...
Article
Novel phenoxazine dyes are successfully introduced as sensitizers into dye-sensitized solar cells (DSCs) with cobalt-based electrolyte. In sensitizers with triphenylamine (TPA) groups recombination from electrons in the TiO2 conduction band to the cobalt(III) species is suppressed. The effect of the steric properties of the phenoxazine sensitizers...
Article
Perovskite has been adopted as photosensitizer to develop solid state p-type mesoporous nickel oxide (NiO) dye-sensitized solar cells (DSCs) employing PCBM as electron conductor. The optimal device achieved an efficiency of 1.5 % with an impressive open circuit voltage of more than 800 mV, which is the record of solar cell based on p-type mesoporou...
Article
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The er effect of metal-free chromophores on dye-sensitized solar cell performance is investigated. Solid state dye-sensitized solar cells (ssDSCs) using dirfferent molecular sensitizers based on tri-phenylamine (TPA) with thiophene linkers and different alkyl chain in the donor unit have been characterized using impedance spectroscopy (IS). We show...
Article
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Supramolecular interactions based on porphyrin and fullerene derivatives were successfully adopted to improve the photovoltaic performance of p-type dye-sensitized solar cells (DSCs). Photoelectron spectroscopy (PES) measurements suggest a change in binding configuration of ZnTCPP after co-sensitization with C60PPy, which could be ascribed to supra...
Article
Time-resolved laser spectroscopy studies of complete solar cells sensitized with a near-infrared absorbing dye (HY103) and filled with different electrolytes are applied to explain their macroscopic parameters (efficiency and short-circuit current). Particular attention is paid to the effect of coadsorbent, size of cations in electrolyte (lithium v...
Article
Full-text available
A low-cost and easily-synthesized organic hole transport material (HTM) X3 bearing triphenylamine units and an organic dye was utilized for solid state dye sensitized solar cells (ssDSCs), which have achieved the power conversion efficiencies of 5.8% and 7.1% under 1 sun and 0.46 sun, respectively, outperforming the ssDSC based on Spiro-OMeTAD 5.4%...
Article
A series of four new dyes, based on the D35 type donor moiety with varied linker units, is synthesized using a facile convergent/divergent method, enabled by an improved synthesis of the D35 donor. The dyes are evaluated in dye sensitized solar cells with Co(II/III)(bpy)3-based electrolytes. By extending the linker fragment, higher photocurrents an...
Article
A series of organic sensitizers containing identical π-spacers and electron acceptors but different, aromatic amine electron-donating groups, were used in dye-sensitized solar cells to study the effect of the electron donating groups on device performance. The derived photophysical and photovoltaic properties, as well as density functional theory c...
Article
Efficient solid state dye-sensitized solar cells (sDSCs) were obtained using a small hole transport material, MeO-TPD, (N,N,N',N'-tetrakis(4-methoxyphenyl)benzidine) after an initial light soaking treatment. It was discovered that the light soak-ing treatment for the MeO-TPD based solar cells is essential in order to achieve the high efficiency (4....
Article
A water-soluble organic redox couple (TT−/DTT) and new organic dyes (D45 and D51) have been developed for aqueous dye-sensitized solar cells (DSCs). An optimal efficiency of 3.5% was obtained using the D51 dye and an optimized electrolyte composition. The highest IPCE value obtained was 68% at 460 nm.
Article
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Colloidal upconversion (UC) nanocrystals were explored as energy relay materials for dye-sensitized solar cells for the first time. The utilization of colloidal UC nanocrystals was found to significantly enhance the upconversion efficiency and improve the photocurrent of the cells for low infrared irradiation intensity. In addition, it was found th...
Article
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In this paper, one kind of organic electrolyte based on tetramethylthiourea is employed for quantum dot sensitized solar cells (QDSCs). By reducing the impedance between the electrolyte and the counter electrode, the fill factor of such organic electrolyte based QDSCs is significantly improved. It is possible to substantially increase the photovolt...
Article
Full-text available
Tetrathiafulvalene (TTF) was investigated as an organic iodine-free redox mediator in electrolytes for dye-sensitized, nanocrystalline solar cells (DSCs) and was compared to the commonly used iodide/triiodide system. The TTF system studied was determined to be a one-electron transfer system, although potentially exhibiting three well-defined oxidat...
Article
An electron injection highway: CdSe nanorods with CdS seed material were applied to a quantum rod-sensitized TiO2 solar cell that showed a higher electron injection efficiency than analogous quantum dot-sensitized solar cells: reducing the nanocrystals′ carrier confinement dimensions can improve electron injection efficiency of nanocrystal-sensitiz...