A5085872132- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Solid-state spectroscopy and crystallography
- Advanced Surface Polishing Techniques
- Integrated Circuits and Semiconductor Failure Analysis
- Advanced machining processes and optimization
- Organic Light-Emitting Diodes Research
- Electromagnetic Scattering and Analysis
- Electromagnetic Simulation and Numerical Methods
- Thin-Film Transistor Technologies
- Advanced Photocatalysis Techniques
- Copper Interconnects and Reliability
- Covalent Organic Framework Applications
- Multimodal Machine Learning Applications
- Electromagnetic Compatibility and Measurements
- Advanced Antenna and Metasurface Technologies
- Advanced Neural Network Applications
- Medical Image Segmentation Techniques
- Thermal Expansion and Ionic Conductivity
- Surface Roughness and Optical Measurements
- Organic Electronics and Photovoltaics
- Advanced battery technologies research
East China Normal University
2022-2025
Nanyang Technological University
2024
Ningbo University
2019-2021
Xidian University
2007
Abstract Fabrication of efficient Pb reduced inorganic CsPbI 2 Br perovskite solar cells (PSC) are an important part environment‐friendly technology. In this work, 10% reduction in CsPb 0.9 Zn 0.1 I promotes the efficiency PSCs to 13.6% (AM1.5, 1sun), much higher than 11.8% pure cell. 2+ has stronger interaction with anions manipulate crystal growth, resulting size‐enlarged crystallite enhanced growth orientation. Moreover, grain boundaries (GBs) passivated by Cs‐Zn‐I/Br compound. The high...
Tin-lead (Sn-Pb) perovskite solar cells (PSCs) with near-ideal bandgap still lag behind the pure lead PSCs. Disordered heterojunctions caused by inhomogeneous Sn/Pb ratio in binary film induce large recombination loss. Here, an Sn-Pb is reported homogeneous component and energy distribution introducing hydrazine sulfate (HS) Sn precursor. HS can form hydrogen bond network coordinate FASnI3 thus no longer Pb2+ , which reduces crystallization rate of tin to level analog. The strong bonding...
Inverted CsPbI3 commonly exhibits a more p-type surface than bulk, which induces severe interfacial recombination and, thus, limits the device's Voc and efficiency in inverted perovskite solar cells (PSCs). Here, gradual CsPbI3/PbS heterojunction is constructed to inhibit such through situ chemical sulfidation with N,N′-diphenylthiourea (DPhTA). DPhTA can directly react form PbS induce p- n-type transition at surface, leads energy level bending downward establishing top of region. PSCs...
One big challenge limiting the stability of perovskite solar cells (PSCs) is that iodine species produced in tend to diffuse and escape from PSCs, accelerating decomposition destroying other functional layers as well. Motivated by idea confinement lithium–iodine batteries, here an confining strategy proposed fabricate stable PSCs incorporating poly(2-vinylpyridine) (P2VP) into film. P2VP can effectively bond with product inhibit its diffusion volatilization thus suppressing device...
An iodine trapping strategy is proposed to inhibit the escaping in perovskite and realize light-heat stable solar cells, retaining over 80% of initial efficiency after maximum power point tracking for 300 h at 85 °C.
Abstract Ag electrode is widely used in inverted perovskite solar cells (PSCs), but its easy reaction and corrosive nature with always induces severe stability issue. Here, from typical theory of metal anticorrosion, a chemical anticorrosion approach for PSCs through introducing 2‐mercaptobenzothiazole (MBT) as corrosion inhibitor reported. MBT can strongly bond to form compact [MBT‐Ag] chain on surface owing N atom thiazolyl ring exocyclic thiol groups. As result, ability greatly enhanced...
Efficient charge transport is especially important for achieving high performance of perovskite solar cells (PSCs). Here, molecularly designed graphite-nitrogen doped graphene quantum dots (GN-GQDs) act as a functional semiconductor additive in film. GN-GQDs with abundant N active sites participate the crystallization film and effectively passivate grain boundary (GB) trap states by Lewis base/acid interaction. Moreover, semiconductive at GBs exhibit matched energy structure perovskite,...
Abstract Here robust Pb‐S covalency is successfully incorporated into CsPbI 3 heterojunction by introducing a new zwitterionic organosulfide‐halide perovskite on top of . Cysteamine (CYS: + NH (CH 2 ) S − will react with PbCl and form 3D much shallower fermi level surface, constructing an efficient /[CYS][PbCl ] heterojunction. As result, interfacial energy loss can be significantly inhibited device open‐circuit voltage ( Voc increased to over 1.20 V champion efficiency 20.38% in inverted...
Abstract The p‐ or n‐type property of semiconductor materials directly determine the final performance photoelectronic devices. Generally, perovskite deposited on p‐type substrate tends to be p‐type, while n‐type. Motived by this, a substrate‐induced re‐growth strategy is reported induce n‐transition surface in inverted solar cells (PSCs). film obtained and crystallized first. Then an ITO/SnO 2 with saturated solution pressed onto annealed secondary region. As result, transition happens...
Pyrophosphoric acid (PP) in isopropanol selectively dissolve the Sn component but not Pb at tin–lead (Sn–Pb) perovskite surface, which enables a low-defect film and highest efficiency of 23.85% for Sn–Pb solar cells.
Abstract Long‐term operational stability remains a big challenge for perovskite solar cells (PSCs), especially under ISOS protocol with high temperature. One key reason lies in the iodine loss issue during PSCs aging. Motived by reversible iodine‐alkenes reaction, 3‐butenylamine (BEA) based 2D 2 [PbBr 4 ] is used to construct functionalized 2D/3D heterojunction PSCs. can chemically adsorb photo‐generated species degradation through typical reaction between neutral and terminal alkenes, thus...
Although great success has been achieved in perovskite solar cells (PSCs), it still suffers from several drawbacks terms of stability and higher efficiency. Doping as an effective method to modify the optical electronic properties materials is extensively studied lead halide perovskites (LHPs). Herein, Pb‐site doping organic–inorganic hybrid (OIH‐LHPs) inorganic CsPbX 3 ‐based discussed. three functions toward PSCs: participating crystalline process, modifying energy states LHPs,...
Inorganic cesium-based perovskite is an alternative material of organic–inorganic because its high thermal stability. However, the phase instability and annealing temperature to form α-phase hinder further development. Herein, this work successfully achieves reduction formation from 350 150 °C high-performance CsPbI2Br-based solar cells via doping CH3COOCs (CsAc) at optimum concentration. The CsAc-doped CsPbI2Br film fabricated low exhibits good crystallization a pinhole-free surface....
Defective grain boundaries (GBs) and surface trap states are detrimental to the efficiency stability of perovskite solar cells (PSCs). In this research, ionic liquid (IL) is used control defect at GBs. The newly formed (EMIm)xMA1–xPb[(BF4)xI1–x]3 interlayer promotes secondary growth diminish GBs; besides, EMIM+ BF4– fill vacancies MA+ I– also passivate undercoordinated Pb2+ states. interface largely reduces nonradiative recombination, thus enhancing solar-cell performance 19.0% (AM 1.5, 1...