A5044185075- Perovskite Materials and Applications
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- Solid-state spectroscopy and crystallography
- Metal-Organic Frameworks: Synthesis and Applications
- Advancements in Battery Materials
- Luminescence and Fluorescent Materials
- Advanced Battery Materials and Technologies
- Zeolite Catalysis and Synthesis
- Inorganic Fluorides and Related Compounds
- Advanced Photocatalysis Techniques
- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Advanced battery technologies research
- Thin-Film Transistor Technologies
- Synthesis and Properties of Aromatic Compounds
- Catalytic Processes in Materials Science
- Luminescence Properties of Advanced Materials
- Advanced Battery Technologies Research
- Magnetism in coordination complexes
- Corrosion Behavior and Inhibition
- 2D Materials and Applications
Institute of Chemistry
2023-2025
Henan University
2021-2025
Chinese Academy of Sciences
2012-2025
Zhengzhou University of Light Industry
2008-2025
Harbin Institute of Technology
2023-2025
Northwest A&F University
2020-2025
Shanghai Institute of Ceramics
2023-2024
University of Science and Technology Beijing
2005-2024
University of Chinese Academy of Sciences
2016-2024
Tianjin Medical University
2024
Daily temperature variations induce phase transitions and lattice strains in halide perovskites, challenging their stability solar cells. We stabilized the perovskite black improved cell performance using ordered dipolar structure of β-poly(1,1-difluoroethylene) to control film crystallization energy alignment. demonstrated p-i-n cells with a record power conversion efficiency 24.6% over 18 square millimeters 23.1% 1 centimeter, which retained 96 88% after 1000 hours 1-sun maximum point...
A key issue for perovskite solar cells is the stability of materials due to moisture effects under ambient conditions, although their efficiency improved constantly. Herein, an CH 3 NH PbI 3− x Cl quality demonstrated with good crystallization and by using water as additive during crystal growth. Incorporating suitable additives in N , ‐dimethylformamide (DMF) leads controllable growth perovskites lower boiling point higher vapor pressure compared DMF. In addition, · n H 2 O hydrated...
Abstract Organometallic halide perovskite films with good surface morphology and large grain size are desirable for obtaining high‐performance photovoltaic devices. However, defects related trap sites generated inevitably at boundaries on surfaces of solution‐processed polycrystalline films. Seeking facial efficient methods to passivate the film minimizing defect density is necessary further improving performance. Here, a convenient strategy developed improve crystallization by incorporating...
Abstract Organic–inorganic hybrid perovskite solar cells (PSCs) are currently attracting significant interest owing to their promising outdoor performance. However, the ability of indoor light harvesting perovskites and corresponding device performance rarely reported. Here, potential planar PSCs in for low‐power consumption devices is investigated. Ionic liquid 1‐butyl‐3‐methylimidazolium tetrafluoroborate ([BMIM]BF 4 ) employed as a modification layer [6,6]‐phenyl‐C61‐butyric acid methyl...
Mixed Pb–In perovskite solar cells are fabricated by using lead(II) chloride and indium(III) with methylammonium iodide. A maximum power conversion efficiency as high 17.55% is achieved owing to the quality of perovskites multiple ordered crystal orientations. As a service our authors readers, this journal provides supporting information supplied authors. Such materials peer reviewed may be re-organized for online delivery, but not copy-edited or typeset. Technical support issues arising...
The development of effective and stable hole transporting materials (HTMs) is very important for achieving high‐performance planar perovskite solar cells (PSCs). Herein, copper salts (cuprous thiocyanate (CuSCN) or cuprous iodide (CuI)) doped 2,2,7,7‐tetrakis( N , ‐di‐ p ‐methoxyphenylamine)‐9,9‐spirobifluorene (spiro‐OMeTAD) based on a solution processing as the HTM in PSCs demonstrated. incorporation CuSCN (or CuI) realizes p‐type doping with efficient charge transfer complex, which...
All-inorganic-based perovskites achieved by replacing the organic component with cesium (Cs) have drawn more attention because of their intrinsic inorganic stability. However, cell efficiency in all-inorganic perovskite solar cells is still far below that organic-inorganic hybrid perovskite-based devices. Here, we develop a new strategy to mediate CsPbI2Br crystallization directly doping copper(II) bromide (CuBr2) into precursor. The incorporation CuBr2 played role retarding dynamics process...
Abstract Tin halide perovskites attract incremental attention to deliver lead‐free perovskite solar cells. Nevertheless, disordered crystal growth and low defect formation energy, related Sn(II) oxidation Sn(IV), limit the efficiency stability of Engineering processing from precursor solution preparation film crystallization is crucial tackle these issues enable full photovoltaic potential tin perovskites. Herein, ionic liquid n ‐butylammonium acetate (BAAc) used tune coordination with...
Halide perovskites are a strong candidate for the next generation of photovoltaics. Chemical doping halide is an established strategy to prepare highest efficiency and most stable perovskite-based solar cells. In this study, we unveil mechanism using series alkaline earth metals. We find that low levels enable incorporation dopant within perovskite lattice, whereas high concentrations induce surface segregation. The threshold from regime correlates size element. show results in more n-type...
Tin-halide perovskites have great potential as photovoltaic materials, but their performance is hampered by undesirable oxidation of Sn(<sc>ii</sc>) to Sn(<sc>iv</sc>). NMR proves DMSO be a main cause oxidation.
Abstract Interface strains and lattice distortion are inevitable issues during perovskite crystallization. Silane as a coupling agent is popular connector to enhance the compatibility between inorganic organic materials in semiconductor devices. Herein, protonated amine silane (PASCA‐Br) interlayer TiO 2 layers adopted directionally grasp both of them by forming structural component unit. The pillowy alkyl ammonium bromide terminals at upper side provide well‐matched growth sites for...
Abstract Aqueous zinc‐metal batteries are considered to have the potential for energy storage due their high safety and low cost. However, practical applications of zinc limited by dendrite growth side reactions. Epitaxial is an effective method stabilizing Zn anode, especially manipulating (002) plane deposited zinc. texture difficult achieve stable cycle at capacity its large lattice distortion uneven electric field distribution. Here, a novel anode with highly (101) (denoted as (101)‐Zn)...
In hybrid organic-inorganic lead halide perovskite solar cells, the energy loss is strongly associated with nonradiative recombination in layer and at cell interfaces. Here, a simple but effective strategy developed to improve performance of cells via combination internal doping by ferroelectric polymer external control an electric field. A group polarized (PFE) polymers are doped into methylammonium iodide (MAPbI3 ) and/or inserted between hole-transporting layers enhance build-in field...
Formamidinium lead triiodide (FAPbI3 ) is attractive for photovoltaic devices due to its optimal bandgap at around 1.45 eV and improved thermal stability compared with methylammonium-based perovskites. Crystallization of phase-pure α-FAPbI3 conventionally requires high-temperature annealing 150 °C whilst the obtained metastable room temperature. Here, aerosol-assisted crystallization (AAC) reported, which converts yellow δ-FAPbI3 into black only 100 using precursor solutions containing...
Exploring new near-room-temperature thermoelectric materials is significant for replacing current high-cost Bi
Tin is the frontrunner for substituting toxic lead in perovskite solar cells. However, tin suffers detrimental oxidation of SnII to SnIV . Most reported strategies employ SnF2 precursor solution prevent formation. Nevertheless, working mechanism this additive remains debated. To further elucidate it, we investigate fluoride chemistry halide perovskites by complementary analytical tools. NMR analysis discloses a strong preferential affinity anions over , selectively complexing it as SnF4 Hard...
Chiral B/N embedded multi-resonance (MR) emitters open a new paradigm of circularly polarized (CP) organic light-emitting diodes (OLEDs) owing to their unique narrowband spectra. However, pure-red CP-MR and devices remain exclusive in literature. Herein, by introducing B-N covalent bond lower the electron-withdrawing ability para-positioned B-π-B motif, first pair double hetero-[n]helicenes (n = 6 7) emitter peaking 617 nm with small full-width at half-maximum 38 high photoluminescence...
Abstract Due to its outstanding optoelectronic properties, halide perovskite solar cells (PSCs) power conversion efficiency has rapidly grown 25.7%. Nonetheless, lead poisoning is a significant hurdle the deployment of (PSCs). Tin most alternative with potential due similar electric and electronic properties less hazardous nature. Yet, performance Sn‐based PSCs lags significantly below that Pb‐based Sn (II)'s easy oxidation (IV). Incorporating large‐sized organic cations form...
Abstract Self‐assembled monolayers (SAMs) have displayed great potential for improving efficiency and stability in p–i–n perovskite solar cells (PSCs). The anchoring of SAMs at the conductiv metal oxide substrates their interaction with materials must be rationally tailored to ensure efficient charge carrier extraction improved quality films. Herein, molecules different groups spacers control mixed Sn–Pb PSCs are selected. It is found that monolayer carboxylate group exhibits appropriate has...
Interface-induced nonradiative recombination losses at the perovskite/electron transport layer (ETL) are an impediment to improving efficiency and stability of inverted (p-i-n) perovskite solar cells (PSCs). Tridecafluorohexane-1-sulfonic acid potassium (TFHSP) is employed as a multifunctional dipole molecule modify surface. The solid coordination hydrogen bonding efficiently passivate surface defects, thereby reducing recombination. induced positive between ETLs improves energy band...
Mixed tin-lead (Sn-Pb) perovskites have attracted the attention of community due to their narrow bandgap, ideal for photovoltaic applications, especially tandem solar cells. However, oxidation and rapid crystallization Sn
In this study, Chinese yam polysaccharides (CYPs) were fermented using Lactobacillus plantarum M616, and changes in the chemical composition, structure, anti-inflammatory activity of CYPs before after fermentation investigated. The carbohydrate content L. M616-fermented CYP (CYP-LP) increased from 71.03% ± 2.75 to 76.28% 2.37%, whereas protein polyphenol almost unaffected compared with those unfermented (CYP-NF). monosaccharide composition CYP-NF included rhamnose, arabinose, galactose,...
The preparation of single-crystal polymers with circularly polarized luminesce (CPL) remains a challenging task in chemistry and materials science. Herein, we present the single-crystal-to-single-crystal topochemical photopolymerization chiral organic salt to achieve this goal. in-situ reaction 1,4-bis((E)-2-(pyridin-4-yl)vinyl)benzene (1) (+)- or (−)-camphorsulfonic acid (CSA) gives monomer crystal 1[( + )/( − )-CSA]2 showing yellow CPL high luminescent dissymmetry factor |glum| 0.035...