A5100676509- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Copper-based nanomaterials and applications
- Solid-state spectroscopy and crystallography
- Luminescence Properties of Advanced Materials
- Radiation Detection and Scintillator Technologies
- Semiconductor materials and interfaces
- Gas Sensing Nanomaterials and Sensors
- Optical properties and cooling technologies in crystalline materials
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- Analytical Chemistry and Sensors
- Meat and Animal Product Quality
- Advanced Chemical Sensor Technologies
- RNA Research and Splicing
- Tissue Engineering and Regenerative Medicine
- 2D Materials and Applications
- Advanced Photocatalysis Techniques
- Nerve injury and regeneration
- Advanced Semiconductor Detectors and Materials
- Supercapacitor Materials and Fabrication
- Advanced Optical Sensing Technologies
- Advanced Battery Technologies Research
Xi'an Jiaotong University
2024-2025
Nanjing University of Science and Technology
2025
Tibet University
2025
Fudan University
2025
University of North Carolina at Chapel Hill
2021-2024
Wuhan University
2021-2024
North China Electric Power University
2022-2024
National University of Malaysia
2024
Applied Physical Sciences (United States)
2021-2024
Wuhan University of Science and Technology
2015-2024
Abstract Two-dimensional atomic crystals, such as two-dimensional oxides, have attracted much attention in energy storage because nearly all of the atoms can be exposed to electrolyte and involved redox reactions. However, current strategies are largely limited intrinsically layered compounds. Here we report a general strategy that uses surfaces water-soluble salt crystals growth templates is applicable not only compounds but also various transition metal hexagonal-MoO 3 , MoO 2 MnO...
Double perovskite Cs2AgInCl6 is newly reported as a stable and environmentally friendly alternative to lead halide perovskites. However, the fundamental properties of this material remain unexplored. Here, we first produced high-quality single crystals (SCs) with low trap density 8.6 × 108 cm–3, even lower than value in best SCs. Through systematical optical electronic characterization, experimentally verified existence proposed parity-forbidden transition identified role oxygen controlling...
Sb2Se3 is introduced as the absorber layer for thin film photovoltaics because of its very attractive material, optical, and electrical properties. High quality films are produced using a hydrazine solution process, heterojunction TiO2/Sb2Se3 solar cell achieving 2.26% efficiency with an impressive high open circuit voltage 0.52 V reported.
Sb2Se3 is a promising absorber material for photovoltaic cells because of its optimum band gap, strong optical absorption, simple phase and composition, earth-abundant nontoxic constituents. However, this rarely explored application. Here we report solar fabricated from thermal evaporation. The rationale to choose evaporation film deposition was first discussed, followed by detailed characterization deposited onto FTO with different substrate temperatures. We then studied the...
Recently, CuSbS2 has been proposed as an alternative earth-abundant absorber material for thin film solar cells. However, no systematic study on the chemical, optical, and electrical properties of reported. Using density functional theory (DFT) calculations, we showed that superior defect physics with extremely low concentration recombination-center defects within forbidden gap, espeically under S rich condition. It intrinsically p-type conductivity, which is determined by dominant Cu...
Sb2Se3 is a very promising photovoltaic material because of its attractive material, optical and electrical properties. Very recently, we reported superstrate CdS/Sb2Se3 solar cell with 5.6% certified efficiency. In this letter, focused on the properties amorphous polycrystalline thin films prepared by thermal evaporation. Using temperature dependent transmission spectrum photoluminescence, indirect transition nature bandgap values as functions were acquired. ellipsometry measurements...
Abstract A low defect density in metal halide perovskite single crystals is critical to achieve high performance optoelectronic devices. Here we show the reduction of grown by a ligand-assisted solution process with 3‐(decyldimethylammonio)‐propane‐sulfonate inner salt (DPSI) as an additive. DPSI ligands anchoring lead ions on crystal surfaces not only suppress nucleation solution, but also regulate addition proper growing surface, which greatly enhances quality. The CH 3 NH PbI better...
We demonstrate sizable, unencapsulated e-tattoos with transformable serpentine design and Cartan curve–inspired transfer.
Polycrystalline perovskites can be readily fabricated into large areas using solution depositions; however, they suffer from dark currents that are tens to hundreds times higher than industrially relevant values, limiting their application in low-dose x-ray detection. Here, we show the of a heterojunction structure polycrystalline films significantly reduces current density by more 200 subnanoampere per square centimeter without reducing sensitivity detectors. The perovskite formed...
Abstract High‐performance tin‐lead perovskite solar cells (PSCs) are needed for all‐perovskite‐tandem cells. However, iodide related fast photodegradation severely limits the operational stability of Sn‐Pb perovskites despite demonstrated high efficiency and thermal stability. Herein, this work employs an alkylammonium pseudo‐halogen additive to enhance power conversion (PCE) photostability methylammonium (MA)‐free, PSCs. Density functional theory (DFT) calculations reveal that...
Abstract Hole‐transporting materials (HTMs) are indispensable for realizing efficient and stable perovskite solar cells (PSCs). Herein, a novel dibenzo[g,p]chrysene‐based HTM, termed FTPE‐OSMe, is synthesized with peripheral methoxy‐ methylthio‐groups, which contrasts most other small molecule HTMs that feature only methoxy‐groups. The presence of methylthio‐groups endows FTPE‐OSMe appropriate energy levels, high‐hole mobility enhanced interfacial interactions. PSCs employing Li‐TFSI...
2D materials, particularly those bearing in‐plane anisotropic optical and electrical properties such as black phosphorus ReS 2 , have spurred great research interest very recently promising building blocks for future electronics. However, current progress is limited to layered compounds that feature atomic arrangement asymmetry within the covalently bonded planes. Herein, a series of highly nanosheets (Sb Se 3 Sb S Bi (S, Se) ), which are composed 1D linked ribbons stacked together via van...
Abstract Sb 2 Se 3 has attracted great research interest very recently as a promising absorber material for thin film photovoltaics due to its suitable bandgap, high absorption coefficient, and non‐toxic, low cost, earth abundant nature. In this work, significant efficiency improvement 4.8% of superstrate cadmium sulfide (CdS)/Sb solar cells is obtained by the controlled addition oxygen during thermal evaporation films. Systematic materials device physics characterization reveal that...
CuSbSe 2 appears to be a promising absorber material for thin‐film solar cells due its attractive optical and electrical properties, as well earth‐abundant, low‐cost, low‐toxic constituent elements. However, no systematic study on the fundamental properties of has been reported, such defect physics, material, optical, which are highly relevant photovoltaic application. First, using density functional theory calculations, is shown have benign i.e., free recombination‐center defects, flexible...
Abstract Sb 2 (S 1−x Se x ) 3 (0 ≤ 1) compounds have been proposed as promising light-absorbing materials for photovoltaic device applications. However, no systematic study on the synthesis and characterization of polycrystalline thin films has reported. Here, using a hydrazine based solution process, single-phase were successfully obtained. Through Raman spectroscopy, we investigated dissolution mechanism in hydrazine: reaction between S/Se yields [Sb 4 S 7 ] 2- /[Sb ions within their...
A novel non-noble Co@C-N catalytic system has been developed for transfer hydrogenation reactions. was found to be highly active and selective in the of a variety unsaturated bonds with isopropanol absence base additives.
Abstract Polarization‐sensitive photodetection has drawn a great deal of research interests, which takes advantage anisotropy from the lattice structure or morphology active material. However, no photodetectors combined these two kinds together for linearly polarized photodetection. Here, photodetector based on cesium lead iodide (β‐CsPbI 3 ) nanowire array with anisotropic crystal is demonstrated. Owing to and β‐CsPbI nanowires, device exhibited high sensitivity light photocurrent ratio...
Abstract In lead–halide perovskites, antibonding states at the valence band maximum (VBM)—the result of Pb 6 s -I 5 p coupling—enable defect-tolerant properties; however, questions surrounding stability, and a reliance on lead, remain challenges for perovskite solar cells. Here, we report that binary GeSe has perovskite-like VBM arising from Ge 4 -Se coupling; it exhibits similarly shallow bulk defects combined with high stability. We find deep defect density in is ~10 12 cm −3 . devise...
Abstract In order to improve both performance and stability of perovskite solar cells, a design is provided by combining the advantages high‐efficiency 3D cells (PSCs) long‐term 2D PSCs. A 2D/3D hybrid film with dual (bulk‐ surface‐) passivation approach realized, based on in‐depth discussion guanidine halide (GuX) mechanisms. The can reduce charge carrier losses in bulk prevent decomposition at surface. Based combination ab initio molecular dynamics simulations, Urbach energy, photovoltage...