A5102853447- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Particle Accelerators and Free-Electron Lasers
- Advanced X-ray Imaging Techniques
- Chalcogenide Semiconductor Thin Films
- Solid-state spectroscopy and crystallography
- Advanced Photocatalysis Techniques
- Particle accelerators and beam dynamics
- Conducting polymers and applications
- Soft Robotics and Applications
- Catalytic Processes in Materials Science
- Electrochemical sensors and biosensors
- Cancer-related molecular mechanisms research
- 2D Materials and Applications
- Advanced biosensing and bioanalysis techniques
- Water Systems and Optimization
- Gyrotron and Vacuum Electronics Research
- Surgical Simulation and Training
- Laser-Plasma Interactions and Diagnostics
- CO2 Reduction Techniques and Catalysts
- Laser Design and Applications
- Electrochemical Analysis and Applications
- Coral and Marine Ecosystems Studies
- Spectroscopy and Laser Applications
- Ocular Oncology and Treatments
Huaneng Clean Energy Research Institute
2023-2025
Harbin Institute of Technology
2025
Tianjin University
2022-2024
Shanghai Advanced Research Institute
2019-2024
Zunyi Normal College
2023-2024
State Grid Corporation of China (China)
2019-2024
Nanjing University of Information Science and Technology
2023-2024
Chengdu University of Technology
2024
Shanghai Jiao Tong University
2019-2023
Northwest A&F University
2023
Although β-CsPbI3 has a bandgap favorable for application in tandem solar cells, depositing and stabilizing experimentally remained challenge. We obtained highly crystalline films with an extended spectral response enhanced phase stability. Synchrotron-based x-ray scattering revealed the presence of oriented grains, sensitive elemental analyses-including inductively coupled plasma mass spectrometry time-of-flight secondary ion spectrometry-confirmed their all-inorganic composition. further...
We show that electronegativity can be used to effectively identify the hardness of crystal materials on basis a new microscopic model for hardness. Bond is proposed characterize electron-holding energy bond, which intrinsic origin Applying this c-BC(2)N materials, we confirm proper bond composition experimentally observed phase c-BC(2)N, in ratio N(C-C):N(B-N):N(B-C):N(C-N) 3:3:1:1. A number bonds or cannot form superhard material are qualitatively distinguished, enables us explore novel by...
All inorganic lead free halide perovskites have successfully emerged as revolutionary optoelectronic semiconductors for use in various applications.
Abstract The buried interface between the perovskite and electron transport layer (ETL) plays a vital role for further improvement of power conversion efficiency (PCE) stability solar cells (PSCs). However, it is challenging to efficiently optimize this as in bottom film. Herein, strengthening strategy constructing efficient stable PSCs by using CsI‐SnO 2 complex an ETL reported. CsI modification facilitates growth film effectively passivates interfacial defects. Meanwhile, gradient...
Defect-triggered phase degradation is generally considered as the main issue that causes instability and limited device performance for CsPbI3 inorganic perovskites. Here, a defect compensation in perovskite through crystal secondary growth of perovskites demonstrated, highly efficient photovoltaics are realized. This achieved by solid-state reaction between bromine salt defective perovskite. Upon reaction, Br- ions can diffuse over entire layer to heal undercoordinated Pb2+ conduct certain...
Black-phase formamidinium lead iodide (FAPbI3 ) with narrow bandgap and high thermal stability has emerged as the most promising candidate for highly efficient stable perovskite photovoltaics. In order to overcome intrinsic difficulty of black-phase crystallization eliminate (PbI2 residue, sequential deposition methods FAPbI3 -based will introduce external ions like methylammonium (MA+ ), cesium (Cs+ bromide (Br- structure. Here a zwitterion-functionalized tin(IV) oxide (SnO2 is introduced...
Abstract The in situ formation of reduced dimensional perovskite layer via post‐synthesis ion exchange has been an effective way passivating organic‐inorganic hybrid perovskites. In contrast, cesium ions Cs‐based inorganic with strong ionic binding energy cannot those well‐known organic cations to form perovskite. Herein, we demonstrate that tetrabutylammonium (TBA + ) cation can intercalate into CsPbI 3 effectively substitute the Cs and one‐dimensional (1D) TBAPbI TBAI treatment. Such TBA...
Formamidinium lead iodide (FAPbI 3 )‐based perovskites have become one of the most promising candidate materials for high efficiency and thermally stable perovskite solar cells due to their outstanding optoelectrical properties thermal stability. However, phase degradation black FAPbI yellow nonperovskite at ambient conditions restricts long‐term stability cells. Such transition can be affected by various especially under humidity stress. To address instability issue, tremendous research...
Abstract The controllable growth of CsPbI 3 perovskite thin films with desired crystal phase and morphology is crucial for the development high efficiency inorganic solar cells (PSCs). role dimethylammonium iodide (DMAI) used in fabrication was carefully investigated. We demonstrated that DMAI an effective volatile additive to manipulate crystallization process different phases morphologies. thermogravimetric analysis results indicated sublimation sensitive moisture, a proper atmosphere...
The efficiency and stability of typical three-dimensional (3D) MAPbI3 perovskite-based solar cells are highly restricted, due to the weak interaction between methylammonium (MA+) [PbI6]4-octahedra in 3D structure, which can cause ion migration related defects. Here, we found that situ-grown perovskitoid TEAPbI3 layer on inhibit MA+ a polar solvent, thus enhancing thermal moisture perovskite films. crystal structure orientation reported for first time by single synchrotron radiation analysis....
Passivation materials play a crucial role in wide range of high-efficiency, high-stability photovoltaic applications based on crystalline silicon and state-of-the-art perovskite materials. Currently, for photovoltaic, the mainstream passivation strategies routinely rely Herein, we have invented new amorphous (lysine)
The reduced dimension perovskite including 2D perovskites are one of the most promising strategies to stabilize lead halide perovskite. A mixed-cation based on a steric phenyltrimethylammonium (PTA) cation is presented. PTA-MA PTAMAPbI4 can be formed surface MAPbI3 (PTAI-MAPbI3 ) by controllable PTAI intercalation either spin coating or soaking. capping layer not only passivate PTAI-MAPbI3 but also act as MA+ locker inhibit MAI extraction and significantly enhance stability. highly stable...
Abstract The photovoltaic performance and long‐term stability of perovskite solar cells (PSCs) are greatly affected by trap states. Herein, a functional ionic liquid 1‐ethyl‐3‐methylimidazolium trifluoroacetate (EMIMTFA) is introduced, in which the cations (EMIM + ) can interact with PbI 2 to form stable one‐dimensional (1D) EMIMPbI 3 , trifluoroacetic acid anions (TFA − passivate interface between electron transfer layer layer. Unlike, widely studied low dimensional capping layers or...
The current reported wide band gap perovskites based on iodide–bromine mixed halide composition would suffer from segregation. Here, we Cs-rich pure-iodide CsxFA1–x–yDMAyPbI3 (x > 0.5; y < 0.01) (denoted as CsFA) and successfully solved the problem of phase segregation in perovskites. comprehensive experimental theoretical results indicated that, because a mildly deformed octahedral framework, our fabricated CsFA exhibit much higher stability than those with similar gaps under thermal or...
Abstract Although pure formamidinium iodide perovskite (FAPbI3) possesses an optimal gap for photovoltaics, their poor phase stability limits the long-term operational of devices. A promising approach to enhance is incorporate cesium into FAPbI3. However, state-of-the-art formamidinium–cesium (FA–Cs) perovskites demonstrate much worse efficiency compared with FAPbI3, limited by different crystallization dynamics and cesium, which result in composition homogeneity high trap densities. We...
Abstract Inverted perovskite solar cells (PSCs) are considered as the most promising avenue for commercialization of PSCs due to their potential inherent stability. However, suboptimal interface contacts between electron transport layer (ETL) (such C 60 ) and absorbing within inverted always result in reduced efficiency poor Herein, a surface state manipulation strategy has been developed by employing highly electronegative 4‐fluorophenethylamine hydrochloride ( p ‐F‐PEACl) effectively...
High quality electron beams with flat distributions in both energy and current are critical for many accelerator-based scientific facilities such as free-electron lasers MeV ultrafast diffraction microscopes. In this Letter, we report on using corrugated structures to compensate the beam nonlinear chirp imprinted by curvature of radio-frequency field, leading a significant reduction spread. By pair orthogonal orientations, show that quadrupole wakefields, which, otherwise, increase...