A5019431282- Perovskite Materials and Applications
- TiO2 Photocatalysis and Solar Cells
- Quantum Dots Synthesis And Properties
- Advanced Photocatalysis Techniques
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- Photonic and Optical Devices
- Photochromic and Fluorescence Chemistry
- Transition Metal Oxide Nanomaterials
- Photochemistry and Electron Transfer Studies
- Polyoxometalates: Synthesis and Applications
- Solid-state spectroscopy and crystallography
- Magnetic Bearings and Levitation Dynamics
- Photonic Crystals and Applications
- Organic Light-Emitting Diodes Research
- Copper-based nanomaterials and applications
- Advanced Nanomaterials in Catalysis
- Advanced Fiber Laser Technologies
- Semiconductor Lasers and Optical Devices
- Advanced battery technologies research
- Ionic liquids properties and applications
- Nuclear Materials and Properties
- Photoreceptor and optogenetics research
- Nonlinear Optical Materials Studies
Chinese Academy of Sciences
2015-2025
Institute of Chemistry
2016-2025
China Academy of Printing Technology
2014-2025
Tianjin University
2023-2024
Henan University
2023
Beijing National Laboratory for Molecular Sciences
2009-2019
Zhejiang University
1996-2014
Zhejiang Sci-Tech University
2014
University of Chinese Academy of Sciences
2012
Osaka University
2002-2011
CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>is deposited as a light absorber on mesoporous TiO<sub>2</sub>film and the structure morphology are investigated at different table temperatures with various amounts of added CH<sub>3</sub>NH<sub>3</sub>Cl. The optimized device exhibits highest power conversion efficiency 12.3% an average value 11.2%.
Abstract Tin‐based halide perovskite materials have been successfully employed in lead‐free solar cells, but the overall power conversion efficiencies (PCEs) limited by high carrier concentration from facile oxidation of Sn 2+ to 4+ . Now a chemical route is developed for fabrication high‐quality methylammonium tin iodide (MASnI 3 ) films: hydrazinium (HASnI film first solution‐deposited using presursors (HAI) and (SnI 2 ), then transformed into MASnI via cation displacement approach. With...
The flexible PSCs with ionic conductive elastomers achieved a record efficiency of 24.84% and self-repaired the cracks at 25 °C.
Poly(3,4-ethylenedioxythiophene) (PEDOT) is an excellent hole-conducting polymer able to replace the liquid I-/I3- redox electrolyte in dye-sensitized solar cells (DSCs). In this work we applied situ photoelectropolymerization technique synthesize PEDOT and carried out a careful analysis of effect different doping anions on overall cell performance. The analyzed are ClO4-, CF3SO3-, BF4-, TFSI−. best performance was observed when TFSI- anion used. Photoelectrochemical impedance studies reveal...
Two novel metal-free organic dyes containing thienothiophene and thiophene segments have been synthesized. Nano-crystalline TiO2 dye-sensitized solar cells were fabricated using these as light-harvesting sensitizers, a high energy-to-electricity conversion efficiency of 6.23% was achieved.
Poly(3,4-ethylenedioxythiophene) (PEDOT) is an excellent kind of conducting polymer, comparable to Pt in catalytic behavior dye-sensitized solar cells. Electrochemical polymerization the presence different anions (doping ions) that work as counterions resulting oxidized state PEDOT has been carried out verify influence doping ions on photo-electron conversion performance and photo-electrochemical measurements reveal interaction between polymer substrate (FTO) directly influences fill factor...
A hydrophobic and 2-thiophen-2-yl-vinyl-conjugated ruthenium complex, cis-Ru(dhtbpy)(dcbpy)(NCS)2 [dhtbpy = 4,4'-di(hexylthienylvinyl)-2,2'-bipyridyl; dcbpy 4,4'-dicarboxy-2,2'-bipyridyl], was newly designed, synthesized applied successfully to sensitization of nanocrystalline TiO2-based solar cells, giving a conversion efficiency 9.5% under irradiation with AM 1.5 light.
A series of new organic D−π−A dyes, coded as DS-1, DS-2, DS-3, and DS-4, was designed, synthesized, characterized by 1H NMR, 13C infrared spectroscopy, mass spectrometry, elemental analysis. These dyes consist a di( p-tolyl)phenylamine moiety an electron donor, cyanoacetic acid acceptor/anchoring group, different types conducting thiophene units spacers to bridge the donor acceptor. It found that both use variation in played essential role modifying and/or tuning physical properties dyes....
The preparation of a novel Nb2O5 blocking layer deposited between fluorine-doped tin oxide (FTO) and nanocrystalline TiO2 its application for dye-sensitized ionic liquid solar cell have been studied. prepared by the sputtering method on FTO has characterized scanning electron microscopy (SEM), cyclic voltammetry (CV), X-ray photoelectron spectroscopy. Thin films work as potential film in electrolyte cells, improving Voc finally giving better conversion efficiency cells. remarkable...
Abstract Organic-inorganic hybrid perovskite materials have recently been identified as a promising light absorber for solar cells. In the efficient cells, active layer has generally fabricated by either vapor deposition or two-step sequential process. Herein, electrochemically deposited PbO film is in situ converted into CH 3 NH PbI through solid-state reaction with adjacent I layer, exhibiting large-scale flat and uniform thin fully substrate coverage. The resultant planar heterojunction...
The low toxicity, narrow bandgaps, and high charge-carrier mobilities make tin perovskites the most promising light absorbers for low-cost perovskite solar cells (PSCs). However, development of Sn-based PSCs is seriously hampered by critical issues poor stability power conversion efficiency (PCE) due to facile oxidation Sn2+ Sn4+ film formability films. Herein, a synthetic strategy developed fabrication methylammonium iodide (MASnI3) via ion exchange/insertion reactions between solid-state...
Abstract Defects from grain interiors and boundaries of perovskite films cause significant nonradiative recombination energy loss, thus with controlled crystallinity large grains is critical for improvement both photovoltaic performance stability perovskite-based solar cells. Here, a methylamine (MA 0 ) gas-assisted crystallization method developed fabrication methylammonium lead iodide (MAPbI 3 films. In the process, film formed via release MA0 gas molecules liquid intermediate phase MAPbI...
Inorganic cesium lead iodide perovskite CsPbI3 is attracting great attention as a light absorber for single or multi-junction photovoltaics due to its outstanding thermal stability and proper band gap. However, the device performance of -based solar cells (PSCs) limited by unsatisfactory crystal quality thus severe non-radiative recombination. Here, vacuum-assisted annealing (VATA) demonstrated an effective approach controlling morphology crystallinity films formed from precursors PbI2 ,...
Abstract Here, the fabrication of quasi‐solid‐state TiO 2 /dye/poly(3‐hexylthiophene) (P3HT) solar cells is reported, in which dyes with oleophilic thienyl groups were employed and ionic liquid (IL), 1‐ethyl‐3‐methylimidazolium (EMIm) containing lithium bis(trifluromethanesulfone)amide (Li‐TFSI) 4‐ tert ‐butylpyridine ( t ‐BP) are assembled dyed surfaces. One devices gave a high conversion efficiency up to 2.70% under 1 sun illumination. The excellent performance ascribed successful...
In dye-sensitized TiO2 solar cells, charge recombination processes at interfaces between fluorine-doped tin oxide (FTO), TiO2, dye, and electrolyte play an important role in limiting the photon-to-electron conversion efficiency. From this point of view, a high work function material such as titanium deposited by sputtering on FTO has been investigated effective blocking layer for preventing electron leakage from without influencing injection. X-ray photoelectron spectroscopy analysis...
Abstract The regulation of interfaces remains a critical and challenging aspect in the pursuit highly efficient stable perovskite solar cells (PSCs). Here, 2,2′‐bipyridyl‐4,4′‐dicarboxylic acid ( HBPDC ) is incorporated as an interfacial layer between SnO 2 layers PSCs. two carboxylic moieties on bind to through esterification, while its nitrogen atoms, possessing lone electron pairs, interact with uncoordinated lead (Pb 2+ atoms Lewis acid‐base interactions. This dual functionality enables...
Two D-pi-A conjugated molecules, BzTCA and BzTMCA, were developed through facile synthetic approaches for dye-sensitized solar cells. The investigation of the photophysical properties BzTMCA both in dilute solutions thin films indicates that their absorption exhibits a wide coverage spectrum. features commence at about 710 nm solution, 800 solid state. maxima (lambda(max)) on TiO(2) film are almost same as those solution. Their HOMOs LUMOs found to partly overlap center these dyes, which...
A novel class of organic D–π–A dyes employing a N,N,N′,N′-tetraphenylbenzidine (TPD) unit as donor was designed and synthesized for dye-sensitized solar cells, which achieved solar-to-electricity conversion efficiency (η) 5.63% in preliminary tests compared to 6.42% N3 dye under the same experimental conditions.
The perovskite CH3NH3PbI3 was prepared on a mesoscopic TiO2 film, starting from electrodepositing PbO, to iodination PbI2, and then interdiffusion reaction with CH3NH3I. as-prepared film used as light absorber for the solar cells, exhibiting high PCE of 12.5% under standard AM 1.5 conditions.
Sb<sub>2</sub>S<sub>3</sub> is decorated on mesoporous TiO<sub>2</sub> films <italic>via</italic> a sequential deposition method. The morphology tunable, and the loading amount can be simply controlled. Using this technology, high efficiency of 6.27% was obtained for Sb<sub>2</sub>S<sub>3</sub>-based solid-state solar cells.