A5064122336- ZnO doping and properties
- Ga2O3 and related materials
- Perovskite Materials and Applications
- Semiconductor materials and devices
- Gas Sensing Nanomaterials and Sensors
- Thin-Film Transistor Technologies
- 2D Materials and Applications
- GaN-based semiconductor devices and materials
- Conducting polymers and applications
- Neural dynamics and brain function
- Plasmonic and Surface Plasmon Research
- Chalcogenide Semiconductor Thin Films
- Photoreceptor and optogenetics research
- Quantum Dots Synthesis And Properties
- Gold and Silver Nanoparticles Synthesis and Applications
- Copper-based nanomaterials and applications
- Advanced Memory and Neural Computing
- Transition Metal Oxide Nanomaterials
- Advanced Photocatalysis Techniques
- Advanced Sensor and Energy Harvesting Materials
- Neuroscience and Neural Engineering
- Ferroelectric and Piezoelectric Materials
- Organic Electronics and Photovoltaics
- Neuroscience and Neuropharmacology Research
- Boron and Carbon Nanomaterials Research
Northwestern Polytechnical University
2023-2024
Keimyung University
2023-2024
Central China Normal University
2021-2024
Chongqing University of Technology
2023
Hubei University
2022-2023
Wuhan University
2013-2023
University of California, Los Angeles
2015-2023
East China University of Technology
2020-2023
Xuzhou University of Technology
2013-2021
Henan Normal University
2021
Methylammonium lead iodide perovskite has attracted intensive interest for its diverse optoelectronic applications. However, most studies to date have been limited bulk thin films that are difficult implement integrated device arrays because of their incompatibility with typical lithography processes. We report the first patterned growth regular microplate crystals functional electronics and optoelectronics. show large microplates can be grown from an aqueous solution through a seeded...
Methylammonium lead iodide perovskite has attracted considerable recent interest for solution processable solar cells and other optoelectronic applications. The orthorhombic-to-tetragonal phase transition in can significantly alter its optical, electrical properties impact the corresponding Here, we report a systematic investigation of size-dependent using combined temperature-dependent transport transmission electron microscopy study. Our studies individual microplates with variable...
The recently emerged organohalide perovskites (e.g., CH3NH3PbI3) have drawn intense attention for high efficiency solar cells. However, with a considerable solubility in many solvents, these are not typically compatible conventional lithography processes more complicated device fabrications that important both fundamental studies and technological applications. Here, we report the creation of novel heterojunction devices based on two-dimensional (2D) crystals by taking advantage layered...
Electronic skin, a class of wearable electronic sensors that mimic the functionalities human has made remarkable success in applications including health monitoring, human-machine interaction and electronic-biological interfaces. While skin continues to achieve higher sensitivity faster response, its ultimate performance is fundamentally limited by nature low-frequency AC currents. Herein, highly sensitive skin-like optical are demonstrated embedding glass micro/nanofibers (MNFs) thin layers...
Ion migration has been postulated as the underlying mechanism responsible for hysteresis in organolead halide perovskite devices. However, electronic and ionic transport dynamics how they impact each other perovskites remain elusive to date. Here we report a systematic investigation of microplate crystals thin films using temperature-dependent transient response measurements. Our study reveals that thermally activated conduction coexist The extracted activation energies suggest is easier,...
Transformation of unipolar n-type semiconductor behavior to ambipolar and finally p-type in CH3 NH3 PbI3 microplate field-effect transistors by thermal annealing is reported. The photoluminescence spectra essentially maintain the same features before after process, demonstrating that charge transport measurement provides a sensitive way probe low-concentration defects perovskite materials.
Abstract Two-dimensional semiconductors (2DSCs) have attracted considerable interests for optoelectronic devices, but are often plagued by the difficulties in tailoring charge doping type and poor optical absorption due to their atomically thin geometry. Herein, we report a methylammonium lead iodide perovskite (CH 3 NH PbI )/2DSC heterojunction device, which electric-field controllable ion migration layer is exploited induce reversible electron- hole-doping effects underlying monolayer...
Odor cues in nature are sparse and highly fluctuating due to turbulent transport. To investigate how animals perceive these intermittent cues, we developed a behavioral task which head-restrained mice made binary decisions based on the total number of discrete odor pulses presented stochastically over several seconds. Mice readily learned this task, their performance was well-described by widely used decision models. Logistic regression choices against timing within respiratory cycle...
Theory and experiment are combined to investigate the nature of low‐energy excitons within ordered domains 6,13‐bis(triisopropylsilylethynyl)‐pentacene (TIPS‐PEN) polycrystalline thin films. First‐principles density functional theory many‐body perturbation calculations, along with polarization‐dependent optical absorption spectro‐microscopy on domains, show multiple peaks that composed excitonic states delocalized over several molecules. While first peak is a single transition retains...
Nonploar m-plane ZnO films were grown on p-Si (111) substrates by using atomic layer deposition. X-ray diffraction and high resolution tunneling electron microscopy measurements showed that the 〈101¯0〉 oriented, crystalline quality of was improved with an Al2O3 buffer layer, which significantly enhances photoluminescence reduces reverse leakage current ZnO/Si heterojuction.
Large-scale organic electronics manufacturing requires solution processing. For small-molecule semiconductors, processing results in crystalline domains with high charge mobility, but the interfaces between these impede transport, degrading device performance. Although understanding is essential to improve performance, their intermolecular and electronic structure unknown: they are smaller than diffraction limit, hidden from surface probe techniques, nanoscale heterogeneity not typically...
The ultrafast spectroscopy of single domains polycrystalline films TIPS-pentacene, a small-molecule organic semiconductor interest in electronic and photovoltaic applications, is investigated using transient absorption microscopy. Individual are distinguished by their different polarization-dependent linear nonlinear optical responses. As compared to bulk measurements, we show that the response within given domain can be tied more concretely specific physical processes transfer exciton...
Abstract Periodical silver nanoparticle (NP) arrays were fabricated by magnetron sputtering method with anodic aluminum oxide templates to enhance the UV light emission from ZnO surface plasmon resonance effect. Theoretical simulations indicated that wavelength depended on diameter and space of Ag NP arrays. By introducing 40 nm 100 nm, photoluminescence intensity near band-edge was twofold enhanced. Time-resolved measurement energy band analysis enhancement attributed coupling between...
Abstract Two‐dimensional transition metal dichalcogenides (2D TMDs) are promising as sensing materials for flexible electronics and wearable systems in artificial intelligence, tele‐medicine, internet of things (IoT). Currently, the study 2D TMDs‐based strain sensors mainly focuses on improving performance sensitivity, response, detection resolution, cyclic stability, so on. There few reports power consumption despite that it is significant importance electronic systems. It still challenging...
Pt supported on carbon (Pt/C) is deemed as the state-of-the-art catalyst towards oxygen reduction reactions (ORRs) in chemical and biological fuel cells. However, due to high cost scarcity of Pt, researchers have focused development Earth-abundant non-precious metal catalysts, hoping replace traditional Pt/C successfully commercialize In this regard, electrocatalysts made transition metals emerged excellent candidates for ORRs, especially Fe Co combination with N-doped carbons, which produce...