A5102985618- Perovskite Materials and Applications
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- Quantum Dots Synthesis And Properties
- Advanced Memory and Neural Computing
- Chalcogenide Semiconductor Thin Films
- Advanced battery technologies research
- Advanced Photocatalysis Techniques
- Luminescence and Fluorescent Materials
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Organic and Molecular Conductors Research
- Semiconductor materials and devices
- Electronic Packaging and Soldering Technologies
- Magnetic and transport properties of perovskites and related materials
- Transition Metal Oxide Nanomaterials
- Photochemistry and Electron Transfer Studies
- Molecular Junctions and Nanostructures
- Luminescence Properties of Advanced Materials
- Solid-state spectroscopy and crystallography
- 2D Materials and Applications
- Thermal properties of materials
- Thermal Expansion and Ionic Conductivity
- Optical properties and cooling technologies in crystalline materials
Hunan First Normal University
2018-2024
Northwestern Polytechnical University
2020-2024
Central South University
2023-2024
The Synergetic Innovation Center for Advanced Materials
2019-2020
Nanjing Tech University
2019-2020
State Council of the People's Republic of China
2018-2019
Changsha University
2018-2019
State Key Laboratory of Polymer Physics and Chemistry
2009-2012
Changchun Institute of Applied Chemistry
2010-2012
Chinese Academy of Sciences
2010-2012
Perovskite synthesis out in the open Although methods have been developed that create photoactive black perovskite phase of formamidinium lead iodide (α-FAPbI 3 ), these routes are temperature and humidity sensitive less compatible with large-scale solar cell production. Hui et al. report an alternative route which vertically aligned thin films grown from ionic liquid methylamine formate. Nanoscale channels lower barrier to permeation enable transformation α-FAPbI , even at high room...
Dion–Jacobson (DJ) phase halide perovskites have attracted extensive attention in photovoltaic devices due to their significantly enhanced stability when compared with conventional 3D analogs. However, fundamental questions concerning the quantum well (QW) barrier thicknesses, which are critical design efficient DJ perovskite photovoltaics, remain unknown. Herein, it is unambiguously demonstrated that QW thickness, depending on bulky organic ammonium spacers different chain lengths, such as...
Unique characteristics of 2D Ruddlesden–Popper (2DRP) perovskite for future photovoltaic application.
This article highlights recent developments of emerging metal halide perovskite based resistive switching memory devices and artificial synapses.
Abstract Metal halide perovskites (MHPs) are considered as promising candidates in the application of nonvolatile high‐density, low‐cost resistive switching (RS) memories and artificial synapses, resulting from their excellent electronic optoelectronic properties including large light absorption coefficient, fast ion migration, long carrier diffusion length, low trap density, high defect tolerance. Among MHPs, 2D have exotic layered structure great environment stability compared with 3D...
A highly soluble polyfluorene-based copolymer containing electron-rich triphenylamine (TPA) and electron-poor 9,9-bis(3,4-bis(3,4-dicyanophenoxy)phenyl side chains in the C-9 position of fluorene unit was synthesized under Yamamoto conditions. By applying 306 nm as excitation wavelength, resultant polymer exhibits strong photoluminescence with maximum emission peaks centered at 413 433(sh) chloroform. The calculated highest occupied molecular orbital (HOMO), lowest unoccupied (LUMO), energy...
The rapidly growing demand for fast information storage and processing has driven the development of resistive random access memories (RRAMs). Recently, RRAMs based on organometal halide perovskite materials have been reported to promising memory properties, which are essential next-generation devices. In this study, a hybrid two-dimensional/three-dimensional (2D/3D) heterostructure created by depositing n-butylammonium iodide top CH3NH3PbI3-xClx (MAPbI3-xClx) surface. film is fabricated...
Asymmetrically 4,7-disubstituted benzothiadiazole derivatives involving a carbazolyl moiety at one end and solubilizing dendron the opposite have been synthesized characterized. A two-layer electroluminescent device based on of these solution-processed molecular emitters revealed maximal luminous efficiency ∼10.6 cd A−1 green light emission with CIE coordinates (0.34, 0.58).
Abstract Organic–inorganic hybrid perovskites (OIHPs) have emerged as a novel class of functional materials with applications in solar cells, photodetectors, light‐emitting diodes, and resistive switching memories. Generally, perovskite films are fabricated toxic solvents antisolvent technique under inert atmosphere, which limits the commercial OIHP‐based devices. To address this issue, uniform CH 3 NH PbBr (MAPbBr ) film is through facile one‐step spin‐coating method by directly dissolving...
The elucidation of intermolecular interactions for the systematic control nucleation and crystallization is key to produce perovskite photovoltaics with superior performance. In this study, we added a weak coordination solvent acetonitrile (ACN) an ionic liquid precursor solution studied effect ACN on environment Pb2+ in determined role process. addition was found reduce between solutes (CH3C═OO–···Pb2+), which facilitated formation large micelles by sharing halogens. More importantly,...
AC-driven EL devices have always been the focus of attention because their great value in field intelligent lighting and multifunctional display. based on various materials optimization methods continuously developed. However, important luminescent semiconductor rarely systematically studied. Herein, development efficient stable organic perovskite devices, including light-emitting materials, device structures are comprehensively The different frequency-dependent characteristics...
Hole transport materials are crucial for efficient charge extraction in perovskite solar cells to achieve high power conversion efficiency and stability. Herein, the hole properties of 2,2′,7,7′-tetrakis-(N,N-di-p-methoxyphenylamine)9,9′-spirobifluorene (spiro-OMeTAD) thin films with a dopant lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) investigated through impedance spectroscopy. Upon doping, we observe dispersive nearly 100-fold increase mobility compared pristine spiro-OMeTAD...
We have investigated the bulk hole transport properties of copper phthalocyanine (CuPc):fullerene (C60) and zinc (ZnPc):C60 heterojunctions by analyzing thickness- temperature-dependent current density–voltage (J–V) characteristics in hole-only device configurations, i.e. indium-tin-oxide (ITO)/poly(ethylene-dioxythiophene):polystyrenesulphonate (PEDOT:PSS)/CuPc: C60 or ZnPc:C60/molybdenum oxide (MoO3)/Al. It has been found that is governed a space-charge-limited (SCLC) model presence...
Halide perovskites have been proven to enormous potential for further flexible optoelectronic devices. However, the repeated mechanical bending and tolerance moisture corrosion remain a critical challenge perovskite Solution chemistry of precursor is basis preparation high-quality films can significantly enhance lasing performance humidity stability perovskites. Herein, from perspective solvent engineering, two ionic liquids (ILs) methylammonium acetate (MAAc) propionate (MAP) were...
Integrated smart portable devices (e.g., self‐powered devices) that utilize the environment‐friendly energy solar energy) by means of photovoltaic technology cell) are a popular concept in current technological development trend. As key component integrated devices, acting as bridge between and working play an important role whole system performance. The emergence perovskite cells (PSCs) with high power conversion efficiencies (over 25%) allows for possibility appearance many multifunctional...