A5008341254- Perovskite Materials and Applications
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Machine Learning in Materials Science
- Quantum Dots Synthesis And Properties
- Advanced materials and composites
- Solid-state spectroscopy and crystallography
- Crystal Structures and Properties
- Semiconductor materials and devices
- Luminescence Properties of Advanced Materials
- Advanced ceramic materials synthesis
- Aluminum Alloys Composites Properties
- Topic Modeling
- Advancements in Battery Materials
- Polyoxometalates: Synthesis and Applications
- Machine Learning in Healthcare
- Neural Networks and Applications
- Ferroelectric and Piezoelectric Materials
- Quantum many-body systems
- High-pressure geophysics and materials
- Hydrogen Storage and Materials
- Metabolomics and Mass Spectrometry Studies
- Advanced Photocatalysis Techniques
- Innovations in Concrete and Construction Materials
- Organic Light-Emitting Diodes Research
Fudan University
2003-2025
ShangHai JiAi Genetics & IVF Institute
2022-2025
Nanchang University
2021-2025
State Key Laboratory of Surface Physics
2022-2025
Physical Sciences (United States)
2025
Xi'an Technological University
2019-2025
Institute of Polymers
2022
Guilin University of Electronic Technology
2020-2022
Nankai University
2019-2021
Jiangxi Normal University
2021
Abstract Tin‐based halide perovskites attract incremental attention due to the favorable optoelectronic properties and ideal bandgaps. However, poor crystalline quality is still biggest challenge for further progress in tin‐based perovskite solar cells (PVSCs) unfavorable defects uncontrollable crystallization kinetics. Here, acetic acid (HAc) first introduced reduce supersaturated concentration of precursor solution preferentially form pre‐nucleation clusters, thus inducing rapid nucleation...
Abstract Interfacial lattice mismatch and adverse reaction are the key issues hindering development of nickel oxide (NiO x )‐based inverted perovskite solar cells (PVSCs). Herein, a p‐chlorobenzenesulfonic acid (CBSA) self‐assembled small‐molecule (SASM) is adopted to anchor NiO crystals endow dual‐passivation. The chlorine terminal SASMs can provide growth sites for perovskite, leading interfacial strain release. Meanwhile, sulfonic group from passivate surface defects , conducive charge...
Tin-based perovskite solar cells (Sn-PSCs) have emerged as promising environmentally viable photovoltaic technologies, but still suffer from severe non-radiative recombination loss due to the presence of abundant deep-level defects in film and under-optimized carrier dynamics throughout device. Herein, we healed structural imperfections Sn perovskites an "inside-out" manner by incorporating a new class biocompatible chelating agent with multidentate claws, namely, 2-Guanidinoacetic acid...
The porous lead iodide layer with ordered arrays structure is firstly fabricated to facilitate the omnidirectional diffusion of organic amine salts and realize high quality large-area perovskite film in two-step sequential deposition.
Abstract Halide perovskites are qualified to meet the flexibility demands of optoelectronic field because their merits flexibility, lightness, and low cost. However, intrinsic defects deformation‐induced ductile fracture in both perovskite buried interface significantly restrict photoelectric performance longevity flexible solar cells (PVSCs). Here, a dual‐dynamic cross‐linking network is schemed boost photovoltaic efficiency mechanical stability PVSCs by incorporating natural polymerizable...
Pioneeringly, we point out a general principle for selecting an appropriate anti-solvent. Salting-out crystallization induced by green anti-solvent (acetic acid, HAc) has been used the first time to fabricate Sn-based PVSCs with efficiency of 12.78%.
The effects from the molecular configuration of diammonium spacer cations on 2D/3D perovskite properties are still unclear. Here, we investigated systematically mechanism configuration-induced regulation crystallization kinetic and carrier dynamics by employing various molecules to construct Dion-Jacobson (DJ)-type perovskites further facilitating photovoltaic performance. minimum average Pb-I-Pb angle leads smallest octahedral tilting [PbX6 ]4- lattice in optimal molecule-incorporated...
The two-step sequential deposition process is demonstrated as a reliable technology for the fabrication of efficient perovskite solar cells (PVSCs). However, complete conversion dense PbI2 to in planar PVSCs tough without mesoporous titanium dioxide support. Herein, multifunctional capsules consisting zeolitic imidazolate framework-8 (ZIF-8) encapsulant and formamidinium iodide (FAI) are introduced between tin oxide (SnO2 ) lead (PbI2 layer. Intriguingly, capsule dopant interlayer benefits...
Abstract Organic–inorganic hybrid perovskite solar cells (PVSCs) have achieved stunning progress during the past decade, which has inspired great potential for future commercialization. However, tin dioxide (SnO 2 ) as a commonly used electron transport layer with varied defects and energy level mismatch contributes to loss limitation of charge extraction. Herein, imidazole‐modified graphene quantum dots (IGQDs) are introduced interlayer, plays significant role in three aspects: 1) dually...
Tin-based perovskite solar cells (PVSCs) are regarded as the most promising alternative among lead-free PVSCs. However, rapid crystallization for tin-based tends to cause inferior film morphology and abundant defect states, which make poor photovoltaic performance. Here, 1-butyl-3-methylimidazolium bromide (BMIBr) ionic liquids (ILs) with strong polarity a low melting point first employed produce Ostwald ripening effect obtain high-quality films large grain size. Meanwhile, non-radiative...
Open AccessCCS ChemistryRESEARCH ARTICLE16 Jun 2022Dual-Resistance of Ion Migration and Moisture Erosion via Hydrolytic Crosslinking Siloxane Functionalized Poly(Ionic Liquids) for Efficient Stable Perovskite Solar Cells Lingyun Gong†, Jia Yang†, Wangping Sheng, Yang Zhong, Su, Licheng Tan Yiwang Chen Gong† College Chemistry Chemical Engineering, Institute Polymers Energy (IPEC), Nanchang University, 330031 , Yang† Sheng Zhong Su *Corresponding authors: E-mail Address: [email protected]...
Eliminating the undesired photoinstability of excess lead iodide (PbI2 ) in perovskite film and reducing energy mismatch between layer heterogeneous interfaces are urgent issues to be addressed preparation solar cells (PVSCs) by two-step sequential deposition method. Here, 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIMBF4 is employed convert superfluous PbI2 more robust 1D EMIMPbI3 which can withstand lattice strain, while forming an interfacial dipole at SnO2 /perovskite interface...
Narrow-bandgap Sn-Pb alloying perovskites showcased great potential in constructing multiple-junction perovskite solar cells (PSCs) with efficiencies approaching or exceeding the Shockley-Queisser limit. However, uncontrollable surface metal abundance (Sn
Open AccessCCS ChemistryRESEARCH ARTICLE11 May 2022Dual Triplet Sensitization Strategy for Efficient and Stable Triplet–Triplet Annihilation Upconversion Perovskite Solar Cells Wangping Sheng†, Jia Yang†, Xiang Li, Jiaqi Zhang, Yang Su, Zhong, Yanda Lingyun Gong, Licheng Tan Yiwang Chen Sheng† College of Chemistry Chemical Engineering, Institute Polymers Energy (IPEC), Nanchang University, 330031 †W. Sheng J. contributed equally to this work.Google Scholar More articles by author , Yang† Li...
Abstract Tin‐based perovskite solar cells (Sn‐PSCs) have emerged as promising environmentally viable photovoltaic technologies, but still suffer from severe non‐radiative recombination loss due to the presence of abundant deep‐level defects in film and under‐optimized carrier dynamics throughout device. Herein, we healed structural imperfections Sn perovskites an “inside‐out” manner by incorporating a new class biocompatible chelating agent with multidentate claws, namely, 2‐Guanidinoacetic...
Abstract The classic solvent system can't sufficiently separate one‐dimensional edge‐sharing SnI 2 crystals in solution, which severely restricts the fabrication of high‐quality tin‐based perovskite film. Herein, a strong Lewis base (hexamethylphosphoramide, HMPA) has been introduced to coordinate Sn 2+ modulate solvation behaviours on precursor and regulate crystallization kinetics. large molecular volume HMPA stronger bind energy ⋅ 2HMPA (−0.595 eV vs −0.118 for 2DMSO) change structure...
Graph neural networks (GNNs) have been shown to be extremely flexible and accurate in predicting the physical properties of molecules crystals. However, traditional invariant GNNs are not compatible with directional properties, which currently limits their usage prediction only scalar properties. To address this issue, here we propose a general framework, i.e., an edge-based tensor graph network, is expressed as linear combination local spatial components projected on edge directions...
Accurately calculating energies and atomic forces with linear-scaling methods is a crucial approach to accelerating improving molecular dynamics simulations. In this paper, we introduce HamGNN-DM, machine learning model designed predict using local density matrices in This achieves efficient predictions time complexity of O(n), making it highly suitable for large-scale systems. Experiments different systems demonstrate that HamGNN-DM DFT-level precision predicting the system sizes, which...