A5082643799- Perovskite Materials and Applications
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- Solid-state spectroscopy and crystallography
- ZnO doping and properties
- Organic Light-Emitting Diodes Research
- Advanced Photocatalysis Techniques
- Advanced battery technologies research
- Advanced Memory and Neural Computing
- Magnetic and transport properties of perovskites and related materials
- Nanowire Synthesis and Applications
- Graphene research and applications
- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- Copper-based nanomaterials and applications
Dalian National Laboratory for Clean Energy
2023-2025
Dalian Institute of Chemical Physics
2023-2025
Chinese Academy of Sciences
2023-2025
University of Chinese Academy of Sciences
2024-2025
Shaanxi Normal University
2014-2023
Ministry of Education of the People's Republic of China
2018-2021
Advanced Energy Materials (United States)
2016-2021
China XD Group (China)
2017
Even though the mesoporous-type perovskite solar cell (PSC) is known for high efficiency, its planar-type counterpart exhibits lower efficiency and hysteretic response. Herein, we report success in suppressing hysteresis record devices using EDTA-complexed tin oxide (SnO2) electron-transport layer. The Fermi level of SnO2 better matched with conduction band perovskite, leading to open-circuit voltage. Its electron mobility about three times larger than that SnO2. power conversion PSCs...
Cs<sup>+</sup>doping into 2D (BA)<sub>2</sub>(MA)<sub>3</sub>Pb<sub>4</sub>I<sub>13</sub>perovskites boosts power conversion efficiency (PCE) to 13.7% and yields superior humidity thermal stability.
Even though the power conversion efficiency (PCE) of rigid perovskite solar cells is increased to 22.7%, PCE flexible (F-PSCs) still lower. Here, a novel dimethyl sulfide (DS) additive developed effectively improve performance F-PSCs. Fourier transform infrared spectroscopy reveals that DS reacts with Pb2+ form chelated intermediate, which significantly slows down crystallization rate, leading large grain size and good crystallinity for resultant film. In fact, trap density film prepared...
An efficiency of flexible perovskite solar cells (Pvs-SCs) 16.09% is achieved, the highest value reported for Pvs-SCs to date. The outstanding performance attributed superior features alternative electron-transport materials, such as antireflection, a suitable work function, high electron mobility, and reduced trap-state density material. As service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized...
Electron transport layer (ETL), facilitating charge carrier separation and electron extraction, is a key component in planar perovskite solar cells (PSCs). We developed an effective ETL using low-temperature solution-processed Nb-doped SnO2 (Nb:SnO2). Compared to the pristine SnO2, power conversion efficiency of PSCs based on Nb:SnO2 raised 17.57% from 15.13%. The splendid performance attributed excellent optical electronic properties material, such as smooth surface, high mobility,...
Abstract Surface defects have been a key constraint for perovskite photovoltaics. Herein, 1,3‐dimethyl‐3‐imidazolium hexafluorophosphate (DMIMPF 6 ) ionic liquid (IL) is adopted to passivate the surface of formamidinium‐cesium lead iodide (Cs 0.08 FA 0.92 PbI 3 and also reduce energy barrier between hole transport layer. Theoretical simulations experimental results demonstrate that Pb‐cluster Pb‐I antisite can be effectively passivated by [DMIM] + bonding with Pb 2+ ion on surface, leading...
Abstract Low ionic migration is required for a semiconductor material to realize stable high‐performance X‐ray detection. In this work, successful controlled incorporation of not only methylammonium (MA + ) and cesium (Cs cations, but also bromine (Br – anions into the FAPbI 3 lattice grow inch‐sized perovskite single crystal (FAMACs SC) reported. The smaller cations anions, comparing original FA I help release stress so that FAMACs SC shows lower ion migration, enhanced hardness, trap...
Abstract Slot‐die coating holds advantages over other large‐scale technologies thanks to its potential for well‐controlled, high‐throughput, continuous roll‐to‐roll fabrication. Unfortunately, it is challenging control thin.film uniformity a large area while maintaining crystallization quality. Herein, by using high‐pressure nitrogen‐extraction (HPNE) strategy assist crystallization, wide processing window in the well‐controlled printing process preparing high‐quality perovskites achieved....
Chemical composition and film quality are two key figures of merit for large-area high-efficiency perovskite solar cells. To date, all studies on mixed perovskites have used solution-processing, which results in imperfect surface coverage pin-holes generated during solvent evaporation, execrably influencing the stability efficiency Herein, we report our development using a vacuum co-evaporation deposition method to fabricate pin-hole-free cesium (Cs)-substituted films with complete coverage....
An in-vacuum low-temperature annealing process is developed to make high-density formamidine-based perovskite films. When the temperature optimized, efficiency increases 21.32%, highest value for a PSC fabricated with vacuum deposition.
Abstract Metal‐halide perovskite has emerged as an effective photovoltaic material for its high power conversion efficiency (PCE), low cost and straightforward fabrication techniques. Unfortunately, long‐term operational durability, mainly affected by halide ion migration undercoordinated Pb 2+ is still the bottleneck large‐scale commercialization. In this work, ionic liquid (IL) designed to effectively cap grain surface improved stability reduced trap density. More specifically, Br − in IL...
Low-temperature solution–grown large high-quality perovskite single crystals enable integrated circuits for imaging.
Abstract Multijunction/tandem solar cells have naturally attracted great attention because they are not subject to the Shockley–Queisser limit. Perovskite ideal candidates for top cell in multijunction/tandem devices due high power conversion efficiency (PCE) and relatively low voltage loss. Herein, sandwiched gold nanomesh between MoO 3 layers is designed as a transparent electrode. The large surface tension of effectively improves wettability gold, resulting Frank–van der Merwe growth...
A deposition process has been developed to fabricate a complete-monolayer Pt coating on large-surface-area three-dimensional (3D) Ni foam substrate using buffer layer (Ag or Au) strategy. The quartz crystal microbalance, current density analysis, cyclic voltammetry integration, and X-ray photoelectron spectroscopy results show that the monolayer accomplishes full coverage can be controlled single atomic thickness. To our knowledge, this is first report 3D bulk with complex fine structures;...
The record efficiency of a two-dimensional perovskite solar cell reaches 16.92% (certified at 16.6%) with excellent stability using vapor-fumigation technique.
Abstract Even though ZnO is commonly used as the ETL in perovskite solar cell (PSC), reactivity of deposited thereupon limits its performance. Herein, an ethylene diamine tetraacetic acid‐complexed (E‐ZnO) successfully developed a significantly improved electron selective layer (ESLs) device. It found that E‐ZnO exhibits higher mobility and better matched energy level with compared to ZnO. In addition, order eliminate proton transfer reaction at ZnO/perovskite interface, high quality film...
Organic-inorganic Pb-based halide perovskite photoelectrical materials, especially solar cells (PSCs), have attracted attention due to the significant efforts in improving power conversion efficiency (PCE) above 25%. However, stability issue of PSCs restricts their further development for commercialization. Strategies are designed keep moisture and oxygen out films, such as additive, surface passivation, solvent engineering; however, usually, corrosion active films by residual is mostly...
Abstract Defects in perovskite films are still the dominant destroyer of both power conversion efficiency (PCE) and long‐term stability solar cells (PSCs). As most popular electron transport layer (ETL), TiO 2 film is used many PSCs to achieve high PCE. However, pristine by itself not sufficient as an ETL due lattice mismatch, poor alignment energy level gap, hysteresis PSC. Herein, ammonium sulfamate (AS), with desired NH 4 + S═O functional groups, designed modify surface interface improve...
Perovskite photovoltaics (PV) is an emerging thin‐film solar energy technology that advantageous over the currently dominant crystalline silicon PV in terms of its adjustable bandgap with sub‐bandgap transparency, potential flexibility, and more rapid continuous roll‐to‐roll manufacturing, showing promise for unique niche applications. Herein, methylammioun lead tribromide (MAPbBr 3 ) utilized a semitransparent flexible cell transparent electrode using sandwiched MoO /Au/MoO (MAM) multilayer...
Abstract Perovskite solar cells (PSCs) have made remarkable strides, positioning themselves as a leading technology in the pursuit of efficient and affordable renewable energy. A critical bottleneck their continued advancement is electrode material, which plays an important role determining both device efficiency stability. Carbon‐based electrodes emerged promising alternative to traditional metal counterparts, offering several key benefits, including lower production costs,...
Abstract Flexible perovskite solar cells offer significant potential for portable electronics due to their exceptional power density. However, the commercialization of these devices is hampered by challenges related mechanical flexibility, primarily inadequate adhesion between absorber layer and flexible substrate. Herein, this delamination issue addressed employing a bifacial linker, potassium benzyl(trifluoro)borate (BnBF 3 K), enhance at SnO 2 /perovskite interface. This approach not only...
In this study, perovskite solar cells were prepared using a two-step spin-coating solution method. By adding Cbz-hydroxylamine to the organic salt reduces PbI 2 residue, enhances crystallization, and improves efficiency by defect suppression.