A5103272134- Conducting polymers and applications
- Perovskite Materials and Applications
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- Luminescence and Fluorescent Materials
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Liquid Crystal Research Advancements
- Synthesis and Properties of Aromatic Compounds
- Thin-Film Transistor Technologies
- Molecular Junctions and Nanostructures
- Solid-state spectroscopy and crystallography
- 2D Materials and Applications
- Photochromic and Fluorescence Chemistry
- Transportation Planning and Optimization
- Tuberculosis Research and Epidemiology
- Synthesis and properties of polymers
- Porphyrin and Phthalocyanine Chemistry
- Advanced Polymer Synthesis and Characterization
- Photochemistry and Electron Transfer Studies
- Surfactants and Colloidal Systems
- biodegradable polymer synthesis and properties
- Mycobacterium research and diagnosis
- Polymer crystallization and properties
- Railway Systems and Energy Efficiency
Beijing Jiaotong University
2015-2024
Guangzhou Institute of Geochemistry
2024
Chinese Academy of Sciences
2024
University of Chinese Academy of Sciences
2024
Sichuan University
2022-2024
Nanjing University of Science and Technology
2023
West China Medical Center of Sichuan University
2022
Beijing Institute of Optoelectronic Technology
2016-2019
Huazhong University of Science and Technology
2012
University of Reading
1990-2011
Anomalously large interface charge in polarity-switchable photovoltaic devices indicates the amount of mobile ions organic–inorganic halide perovskites.
While perovskite light‐emitting diodes typically made with high work function anodes and low cathodes have recently gained intense interests. Perovskite devices two electrodes interesting features are demonstrated here. Firstly, electroluminescence can be easily obtained from both forward reverse biases. Secondly, the results of impedance spectroscopy indicate that ionic conductivity in iodide (CH 3 NH PbI ) is large a value ≈10 −8 S cm −1 . Thirdly, shift emission spectrum mixed halide 3− x...
Since interface charge changes band bending and thus influences photocurrent, its dynamics governs the current–voltage hysteresis.
Photomultiplication-type polymer photodetectors (PM-PPDs) were fabricated with hole-only transport active layers containing polymer(s): [6,6]-phenylC61-butyric acid methyl ester (PC61BM) a weight ratio of 100:2. The rather less PC61BM content in prefers to generate large amount isolated electron traps surrounded by polymers. Photogenerated electrons prefer be trapped the due lack continuous electron-transport channels. close Al electrode would like seduce hole tunneling injection....
Given that it is closely related to perovskite crystallization and interfacial trap densities, buried engineering crucial for creating effective stable solar cells. Compared with the in-depth studies on defect at top interface, exploring of side film relatively complicated scanty owing non-exposed feature. Herein, degradation process probed from films continuous illumination its effects morphology photoelectronic characteristics a facile lift-off method. Additionally, buffer layer Piperazine...
We report the fabrication of high power conversion efficiency (PCE) polymer/fullerene bulk heterojunction (BHJ) photovoltaic cells using solution-processed Copper (I) Iodide (CuI) as hole transport layer (HTL). Our devices exhibit a PCE value ∼5.5% which is equivalent to that obtained for control based on commonly used conductive polymer poly(3,4-ethylenedioxythiophene): polystyrenesulfonate HTL. Inverted with >3% were also demonstrated metal oxide electron layers, CuI HTL evaporated...
With people’s increasing concern about food safety, cold-chain logistics distribution centre is playing an important rolein preventing from going bad. Now centres have the problems of too muchtransportation, low degree automation, unreasonable layout planning, complex process etc. It isimportant to solve these in order achieve efficient distribution. Firstly modeling and simulation for theoperation a fruits vegetables by using Flexsim software isrealized. Then paper analyses preliminary...
A straightforward synthesis of triphenylene-perylene-triphenylene triad structures has been achieved by using versatile triphenylene intermediates bearing a single oxyalkyl amine side chain. Among these, PBITP(10) showed stable columnar mesophase implying favorably matched core-core separations in the structure. Importantly, can be used as vehicle for doping matrices with functional but incompatible perylene units and mixture hexahexyloxytriphenylene matrix doped 0.1% is homogeneous liquid...
The instability of 3D perovskite and the low power conversion efficiency (PCE) 2D limit development solar cells (PSCs). Using to passivate thin films by heterojunction engineering has become an effective strategy develop stable efficient PSCs. Therefore, it is important find suitable passivation materials. Herein, a 2D/3D formed in situ introducing long‐chain alkyl phenylbutylammonium (PBA + ) cation. property n = 2, which passivates surface defects perovskite, resulting enhanced...
Blue electroluminescence has been demonstrated using novel materials 1,3-diphenyl-4-methyl-1H-pyrazolo[3,4-b]quinoline (PAQ4) and 4-phenyl-1,3,5,7-tetramethyl-1,7-dihydrodipyrazolo[3,4-b;4′,3′-e]pyridine (PAP1) for the first time. The peak maxima of their electroluminescent spectra were at 442 nm (ca. 20 shift from its photoluminescent maximum) PAQ4 425 (within same spectral range as photoluminescence) PAP1.
Novel triphenylene dimers linked by a central crown ether core have been synthesized and characterized. The is most conveniently formed as final step to permit purification isolation of ion-free material, extension the protocol permits synthesis triad structures though 27-crown-9 macrocycle. latter compounds present new discotic motif that supports mesophase formation.
The grain boundaries of perovskite polycrystalline are regarded as a defect region that not only provides carrier recombination sites but also introduces device degradation pathways. Efforts to enlarging the size film and reducing its boundary crucial for highly efficient stable solar cells (PSCs). Some effective methods facilitate growth postdeposition thermal annealing solvent vapor annealing. However, detailed understanding mechanisms in films is lacking. In this study, were prepared by...
The use of multifunctional amino acid additives, 2-ACL and 3-ACL, to passivate the vacancy defects in perovskite leads significant improvements open circuit voltage filling factor PSCs.
Triphenylene twins are intriguing structures, and those bridged through their 3,6-positions by dipyrromethene units give a new class of macrocycles that can be viewed as rigid, expanded porphyrin derivatives in which coplanarity is enforced formally antiaromatic π system. Somewhat surprisingly, however, macrocyclization leads to significant overall stabilization the chromophores.
The Jianbei gas reservoir, situated in the Altun Mountains of Qaidam Basin, is a typical bedrock reservoir. Since its commissioning, wells have generally encountered water breakthrough, leading to significant drop production. To address this issue, pressurised lift process was implemented drain and boost While most exhibited positive production increases, some showed little no change productivity post-treatment. Therefore, it imperative investigate reasons for these discrepancies...