A5084043520- Perovskite Materials and Applications
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Dielectric materials and actuators
- Solid-state spectroscopy and crystallography
- Ferroelectric and Piezoelectric Materials
- Organic Light-Emitting Diodes Research
- Advanced Sensor and Energy Harvesting Materials
- Energy Harvesting in Wireless Networks
- Innovative Energy Harvesting Technologies
- Advanced Photocatalysis Techniques
- Crystallography and molecular interactions
- Optical Coatings and Gratings
- Polymer composites and self-healing
- Wireless Power Transfer Systems
- Photopolymerization techniques and applications
- Organic Electronics and Photovoltaics
- Bone Tissue Engineering Materials
- Food composition and properties
- 2D Materials and Applications
- Food Chemistry and Fat Analysis
- Advanced Battery Materials and Technologies
China Academy of Engineering Physics
2025
North China Electric Power University
2022-2024
Southwest University
2024
Tsinghua University
2021-2023
Xihua University
2023
Sungkyunkwan University
2015-2019
Central South University
2017-2019
Central South University of Forestry and Technology
2017-2019
National Center for Nanoscience and Technology
2019
Nankai University
2014
Chemical interaction at a heterojunction interface induced by an appropriate chemical linker is of crucial importance for high efficiency, hysteresis-less, and stable perovskite solar cells (PSCs). Effective engineering in PSCs reported via multifunctional 4-imidazoleacetic acid hydrochloride (ImAcHCl) that can provide bridge between SnO2 through ester bond with esterification reaction electrostatic imidazolium cation ImAcHCl iodide anion perovskite. In addition, the chloride plays role...
Thermal stability of CH3NH3PbI3 (MAPbI3)-based perovskite solar cells was investigated for normal structure including the mesoporous TiO2 layer and spiro-MeOTAD inverted with PCBM NiO. MAPbI3 found to be intrinsically stable from 85 °C 120 in absence moisture. However, fast degradation observed encapsulated device upon thermal stress at °C. Photoluminescence (PL) intensity time constant charge separation increased exposure time, which is indicative inhibition into spiro-MeOTAD. A full...
Organo lead halide perovskite materials like methylammonium iodide (CH3NH3PbI3) and formamidinium (HC(NH2)2PbI3) show superb opto-electronic properties. Based on these light absorbers, power conversion efficiencies of the solar cells employing hole transporting layers have increased from 9.7% to 20.1% within just three years. Thus, it is apparent that cell a promising next generation photovoltaic technology. However, unstable nature was observed when exposing continuous illumination,...
Vacuum evaporation is promising for the high-throughput fabrication of perovskite solar cells (PSCs) because its solvent-free characteristic, precise control film thickness, and compatibility with large-scale production. Nevertheless, power conversion efficiency (PCE) PSCs fabricated by vacuum lags behind that solution-processed PSCs. Here, we report a Cl-containing alloy–mediated sequential approach to fabricate films. The presence Cl in alloy facilitates organic ammonium halide diffusion...
Here we report an efficient and reproducible multifunctional additive engineering strategy via methoxysilane cross-linking agents functionalized by the different terminal group, moderate electron-donating −SH, weak −CH3, or strong electron-withdrawing −CN, into a PbI2 precursor solution. The power conversion efficiency (PCE) is increased from 18.4 to 20.8% after introduction of (3-mercaptopropyl)trimethoxysilane (MPTS) containing −SH group as consequence improved voltage current density,...
Organic-inorganic hybrid perovskites exhibit outstanding performances in perovskite solar cells (PSCs). However, the complex solution chemistry of precursors renders it difficult to prepare large-area devices a reproducible way, which is prerequisite for technology make an impact beyond lab scale. Vacuum processing, instead, established large-scale coating thin films. with respect highly challenging due high vapor pressure organic ammonium halide. In this work, vacuum evaporation lead iodide...
The presence of the detrimental PbI2 residue at buried interface negatively affects photovoltaic performance perovskite solar cells (PSCs). However, underlying mechanism involved in formation and elimination residual has been rarely investigated, despite its critical significance for high-efficiency stable PSCs. Here, we investigated influenced by citric acid (CA) found that CA can quickly remove PbI2·DMSO complex through a competitive adsorption forming highly crystallized PbI2. This...
Abstract Mixed 2D/3D perovskite solar cells (PSCs) show promising performances in efficiency and long‐term stability. The functional groups terminated on a large organic molecule used to construct 2D capping layer play key role the chemical interaction mechanism thus influence device performance. In this study, 4‐(trifluoromethyl) benzamidine hydrochloride (TFPhFACl) is adopted atop 3D perovskite. It found that there are two mechanisms synergistically contributing increase of efficiency: 1)...
The interfaces of perovskite solar cells (PSCs) are well known to be rich in deep‐level carrier traps, which serve as non‐radiative recombination centers and limit the open‐circuit voltage ( V oc ) power conversion efficiency (PCE) PSCs. Defect chemistry surface passivators have been researched extensively mainly focused on neutralization uncoordinated lead or anion defects. Herein, a novel brominated passivator 2‐bromophenethylammonium iodide (2‐Br‐PEAI) is introduced for multi‐functional...
The effect of annealing atmosphere and importance oxygen partial pressure upon NiO film for achieving high efficiency inverted perovskite solar cells (PSCs) is reported. solution‐process films are deposited on an FTO (fluorine‐doped tin oxide) substrate annealed at 400 °C under different atmospheres air, O 2 , N Ar. devices using air‐ ‐annealed show better photovoltaic performance than the ‐ Ar‐annealed ones, mostly due to large difference in photocurrent density ( J sc ) ≈20 mA cm −2 air vs...
Polymer-derived SiOC ceramics (PDCs-SiOC) possess advantages such as high temperature resistance, oxidation corrosion and customizable mechanical dielectric properties. These attributes make them a promising material for high-temperature structural functional applications. Based on polymer-derived ceramic conversion technology, this study synthesized photosensitive resin with yield low shrinkage from commercial MK resin, 3-(trimethoxysilyl) propyl methacrylate, trimethylolpropane triacrylate...
Currently, the most efficient perovskite solar cells (PSCs) mainly use planar and mesoporous titanium dioxide (TiO2) as an electron-transport layer (ETL). However, because of its intrinsic photocatalytic properties, TiO2 can decompose absorber lead to poor stability under illumination (ultraviolet light). Herein, a simplified architectural ETL-free PSC with enhanced efficiency outstanding photostability is produced by facile deposition bathocuproine (BCP) interlayer. Power conversion...
Inverted perovskite solar cells (PSCs) employing NiO film as the hole transport layer (HTL) have been widely investigated due to their good stability. The interface between and plays a key role in device efficiency stability, an interfacial modifier is usually selected adjust this interface. A should not only deduct energy barrier passivate trap states at NiO/perovskite but also be beneficial for growth of absorbers. Herein, n-pyridine carboxylic acid (n-PA, where n = 2, 3, 4) isomers with...
Surface passivation by constructing a 2D/3D structure is considered to be an effective strategy for suppressing non-radiative recombination and improving the device efficiency stability. Herein, 2D perovskite formed in situ on surface of 3D via chemical interactions between diethylammonium iodide (DAI) Pb-I octahedra, which greatly reduces deep level defects recombination. Moreover, can regulate energy alignment, enhance charge extraction, improve open-circuit voltage. Finally, compared with...
Recently, many methods based on amplitude or phase modulation to reduce the focal spot and enhance longitudinal field component of a tight-focused radially polarized light beam have been suggested. But they all suffer from size limit 0.36λ/NA large side lobes strength in component. Here, we report method generating tighter focused by focusing azimuthally beams different wavelengths thin photochromic film through high-numerical-aperture lens simultaneously. In this method, suppressing radial...
Abstract The planar perovskite solar cells (PSCs) using TiO 2 as the electron transport layer (ETL) are undergoing a stagnated efficiency improvement, which inferior ETL mainly limits. Herein, flocculating‐regulated deposition SnCl ·2H O is reported flocculate to control nanoparticle size finely for optimizing and achieve synergistic Sn doping. incorporated into bath precursor can bridge‐link suspended nanoparticles, promotes precipitation of large‐sized nanoparticles leaves smaller‐sized...
Further performance enhancement of perovskite solar cells (PSCs) is limited by the defect‐assisted recombination losses. The approaches employed to decrease losses contain defect passivation, crystallization control, interface engineering, etc. Herein, a new material acetamidine thiocyanate (AASCN) via facile method synthesized, which exhibits dual functions combining cation with passivation and an anion crystallization. iodine vacancies in can be effectively passivated through hydrogen...
Despite as the key component in modern electronic devices or power systems, ceramic dielectric capacitors have drawbacks like low energy storage density and efficiency that limits their extensively wide application. Compared to frequently utilized composition modification, this work adopted a different route improve performance. 0.98Ba0.65Sr0.245Bi0.07TiO3-0.02Ce (BSBT-Ce) Pb-free ceramics with PVA contents were prepared through viscous polymer processing. The rheological storing performance...