A5100419904- Perovskite Materials and Applications
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- Solid-state spectroscopy and crystallography
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Supercapacitor Materials and Fabrication
- Thin-Film Transistor Technologies
- Ga2O3 and related materials
- Advanced Sensor and Energy Harvesting Materials
- Advanced Photocatalysis Techniques
- Silicon and Solar Cell Technologies
- Numerical methods in engineering
- Electromagnetic Simulation and Numerical Methods
- Advanced Photonic Communication Systems
- Optical Coatings and Gratings
- Molecular Junctions and Nanostructures
- Advanced Battery Materials and Technologies
- Gas Sensing Nanomaterials and Sensors
- Luminescence Properties of Advanced Materials
- Advancements in Battery Materials
- Silicon Nanostructures and Photoluminescence
Southern University of Science and Technology
2018-2025
Shenzhen Technology University
2025
Changshu Institute of Technology
2023-2024
Shanghai Jiao Tong University
2016-2024
Guizhou Aerospace Power Science & Tech (China)
2024
Suzhou Institute of Nano-tech and Nano-bionics
2023
Chinese Academy of Sciences
2023
Dalian Jiaotong University
2023
South China Normal University
2023
Institute of Semiconductors
2023
Perovskite solar cells with the formula FA1-xCsxPbI3, where FA is formamidinium, provide an attractive option for integrating high efficiency, durable stability and compatibility scaled-up fabrication. Despite incorporation of Cs cations, which could potentially enable a perfect perovskite lattice1,2, compositional inhomogeneity caused by A-site cation segregation likely to be detrimental photovoltaic performance cells3,4. Here we visualized out-of-plane along vertical direction across films...
2D perovskites, due to their unique properties and reduced dimension, are promising candidates for future optoelectronic devices. However, the development of stable nontoxic wide-bandgap perovskites remains a challenge. all-inorganic perovskite Sr2 Nb3 O10 (SNO) nanosheets with thicknesses down 1.8 nm synthesized by liquid exfoliation, first time, UV photodetectors (PDs) based on individual few-layer SNO sheets investigated. The sheet-based PDs exhibit excellent detecting performance...
The conventional precursor mixture based on highly pure and expensive PbI2 (purity >99.99%) is problematic in commercializing perovskite solar cells (PSCs) because of a large deviation the batch-to-batch photovoltaic performance due to underlying nonstoichiometry and/or nonperovskite phase. Here, we report reproducibly efficient (>21%) PSCs ambient-temperature-stable δ-phase FAPbI3 powder, synthesized by reacting (either homemade or low-grade commercial product with purity <99%)...
For scalable perovskite solar cells (PSCs), deposition of a homogeneous and high-quality film on large area (>100 cm2) is prerequisite. Conventional solutions for spin-coating small areas usually contain polar aprotic solvents with high boiling point, which difficult to adopt large-area bar coating because the uncontrollable slow drying process due strong interaction between solvent Lewis acidic PbI2 or perovskite. Thus, precursor solution plays vital role in success coating. Here we report...
Abstract To achieve high efficiency perovskite solar cells (PSCs) based on α‐phase formamidinium lead iodide (FAPbI 3 ), addition of methylammonium chloride (MACl) in the precursor solution is commonly used, mainly because phase stability and improvement grain size crystallinity. However, instability MA limits device long‐term stability. In this report, n ‐propylammonium (PACl) proposed as an alternative to MACl for more stable efficient FAPbI ‐based PSCs. Perovskite increased after PACl....
High-purity precursor materials are vital for high-efficiency perovskite solar cells (PSCs) to reduce defect density caused by impurities in perovskite. In this study, we present aqueous synthesized microcrystals as PSCs. Our approach enables kilogram-scale mass production and synthesizes formamidinium lead iodide (FAPbI
Mixed lead-tin perovskite solar cells (LTPSCs) with an ideal bandgap are demonstrated as a promising candidate to reach higher power conversion efficiency (PCE) than their Pb-counterparts. Herein, Br-free mixed material, FA0.8 MA0.2 Pb0.8 Sn0.2 I3 , of 1.33 eV, absorber, is selected. Through density functional theory calculations and optoelectronic techniques, it that both Pb- Sn-related A-site vacancies pushed into deeper energetic depth, causing severe nonradiative recombination. Hence,...
To ensure carrier selectivity, we propose an interfacial molecular bridge comprised of Ph-CH 2 N + H 3− n (CH 3 ) ammonium cation at the perovskite–substrate interface and reveal its underlying impact on PSCs performance.
BrDS doping can effectively inhibit the oxidation of Sn 2+ and passivate grain boundary defects point in tin-based perovskite films. As a result, device achieved PCE 14.98% with certified efficiency 14.36%.
Abstract A strong n‐type perovskite layer is crucial in achieving high open‐circuit voltage ( V OC ) and power conversion efficiency (PCE) the p‐i‐n solar cells, as weak perovskites result a loss of , p‐type contain numerous electron traps that cause severe carrier recombination. Here, three types perylene diimide (PDI) based small molecule dopants with different dimensions, including 1D‐PDI, 2D‐PDI, 3D‐PDI are designed, to produce heavier perovskites. The PDI‐based molecules Selenium atoms...
Tin dioxide (SnO2) stands as a promising material for the electron transport layer (ETL) in perovskite solar cells (PSCs) attributed to its superlative optoelectronic properties. The attainment of superior power conversion efficiency hinges critically on preparation high‐quality SnO2 thin films. However, conventional nanoparticle colloids often suffer from inherent issues such numerous oxygen vacancy defects and film non‐uniformity. In this study, we report strategy homogenize with reduced...
A novel alcohol-soluble n-type conjugated polyelectrolyte (n-CPE) poly-2,5-bis(2-octyldodecyl)-3,6-bis(thiophen-2-yl)-pyrrolo[3,4-c]pyrrole-1,4-dione-alt-2,5-bis[6-(N,N,N-trimethylammonium)hexyl]-3,6-bis(thiophen-2-yl)-pyrrolo[3,4-c]pyrrole-1,4-dione (PDPPNBr) is synthesized for applications as an electron transport layer (ETL) in inverted polymer solar cells (PSCs) device. Because of the electron-deficient nature diketopyrrolopyrrole (DPP) backbone and its planar structure, PDPPNBr endowed...
We report a novel approach for fast phase transition of FAPbI<sub>3</sub> at low-temperature and the effective removal interfacial recombination in MAPbI<sub>3</sub>.
Perovskite films with enhanced grain size and reduced boundary were obtained the incorporation of sulfonate-carbon nanotubes.
All-inorganic CsPbI3 quantum dots (QDs) have demonstrated promising potential in photovoltaic (PV) applications. However, these colloidal perovskites are vulnerable to the deterioration of surface trap states, leading a degradation efficiency and stability. To address issues, facile yet effective strategy introducing hydroiodic acid (HI) into synthesis procedure is established achieve high-quality QDs devices. Through an in-depth experimental analysis, introduction HI was found convert PbI2...
The crystalline morphology of perovskite film plays a key role in determining the stability and performance solar cells (PSCs). In addition, work function conductivity hole transport layer (HTL) have great influence on effciency PSCs. Here, we develop synergistic doping strategy to fabricate high-performance inverted PSCs, functional nanographene (C78-AHM) into poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine (PTAA) HTL, thus forming an HTL with higher conductivity, lower roughness, frontier...
Through a bimolecular energy-level-tunable design, an ET-HTL reaches optimal energy level alignment with three different perovskite compositions, providing balanced interface defect passivation, charge extraction, and transition loss suppression.
Abstract Formamidinium‐cesium lead triiodide (FA 1‐x Cs x PbI 3 ) perovskite holds great promise for solar cells (PSCs) with both high efficiency and stability. However, the defective surfaces induced by defects residual tensile strain largely limit photovoltaic performance of corresponding devices. Here, passivation capability alkylamine‐modified pyridine derivatives surface FA is systematically studied. Among studied passivators, 3‐(2‐aminoethyl)pyridine (3‐PyEA) suitable size demonstrated...
Due to the incompatibility and inconsistence of active species for hydrogen oxygen evolution reactions, nearly all intermetallic catalysts present superb catalytic activity one half reaction at...
Indium (In) reduction is a hot topic in transparent conductive oxide (TCO) research. So far, most strategies have been focused on reducing the layer thickness of In-based TCO films and exploring In-free TCOs. However, no promising industrial solution has obtained yet. In our work, we adopt emerging reactive plasma deposition (RPD) approach provide In-reduced by directly content from source material. We designed indium zinc (IZO) target with composition Zn3In2O6 (i.e., (ZnO)3·In2O3). Density...
The wide-bandgap and p-type semiconductor layer plays a crucial role in the antimony selenide (Sb2Se3) solar cells, as it can provide carrier confinement inhibit interface recombination. In this work, tellurium (Te) thin is innovatively applied superstrate Sb2Se3 which further situ oxidized to (3.67 eV) oxide (TeOx). Experimental results indicate that both Te TeOx layers enhance built-in potential depletion width of devices reduce nonradiative recombination at back interfaces. Furthermore,...