A5090048873- Perovskite Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- 2D Materials and Applications
- Advanced Memory and Neural Computing
- Luminescence Properties of Advanced Materials
- Ga2O3 and related materials
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Quantum Dots Synthesis And Properties
- Solid-state spectroscopy and crystallography
- Transition Metal Oxide Nanomaterials
- Advanced Semiconductor Detectors and Materials
- Tactile and Sensory Interactions
- Organic Light-Emitting Diodes Research
- Optical properties and cooling technologies in crystalline materials
- Thermal Expansion and Ionic Conductivity
- Organic Electronics and Photovoltaics
- Neuroscience and Neural Engineering
- Radiation Detection and Scintillator Technologies
- Nanowire Synthesis and Applications
- ZnO doping and properties
- Advanced Fiber Laser Technologies
- Chalcogenide Semiconductor Thin Films
- Nanofabrication and Lithography Techniques
- Analytical Chemistry and Sensors
Tsinghua University
2019-2025
Institute of Microelectronics
2019-2022
State Key Laboratory of Applied Organic Chemistry
2018-2021
Lanzhou University
2018-2021
National Engineering Research Center for Information Technology in Agriculture
2020
Lanzhou City University
2019
We report an artificial eardrum using acoustic sensor based on two-dimensional MXene (Ti3C2Tx), which mimics the function of a human for realizing voice detection and recognition. Using with large interlayer distance micropyramid polydimethylsiloxane arrays can enable two-stage amplification pressure sensing. The shows extremely high sensitivity 62 kPa-1 very low limit 0.1 Pa. Notably, benefiting from ultrasensitive eardrum, machine-learning algorithm real-time classification be realized...
Pb-free perovskite material is considered to be a promising utilized in next-generation X-ray detectors due its high absorption coefficient, decent carrier transport properties, and relatively low toxicity. However, the pixelation of with an industry-level photolithography processing method remains challenging poor structural stability. Herein, we use Cs2AgBiBr6 as prototype investigate interaction photolithographic polar solvents. Inspired by that, propose wafer-scale patterning method,...
Abstract Perovskite semiconductors have shown significant promise for photodetection due to their low effective carrier masses and long lifetimes. However, achieving balanced detection across a broad spectrum—from X‐rays infrared—within single perovskite photodetector presents challenges. These challenges stem from conflicting requirements different wavelength ranges, such as the narrow bandgap needed infrared dark current necessary X‐ray sensitivity. To address this, this study designed...
Abstract Black phosphorus (BP) has attracted great attentions in the last few years, but their applications optoelectronics have been strongly hindered by poor environmental stability, especially under light irradiation. Herein, fabrication of surface passivated few‐layer BP assisted polymer ionic liquids (PILs) is reported. The PIL‐modified 2D exhibits excellent stability ambient conditions, with negligible deterioration 100 d. Furthermore, PILs attached on provide reliable and flexible...
An effective solution to scalable exfoliation of large lateral sized antimonene nanosheets is developed. Flexible photodetectors based on hybrid structure surface modified few layer exhibited excellent performance.
The sensitive detection of low-dose X-ray radiation is essential to many applications. In this article, the ultrasensitive detector based on pure Cs <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> AgBiBr xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> all-inorganic lead-free perovskite film successfully demonstrated and encapsulated using a metal casing with Be window. high-quality films are obtained through low-cost solution process...
Organolead halide perovskites provide tremendous opportunities for ideal radiation detection due to their high atomic numbers, large carrier mobilities, and long lifetimes. Here, we synthesized high-quality single crystal CH <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> NH PbBr with a mobility-lifetime product of 4.1 × 10 <sup xmlns:xlink="http://www.w3.org/1999/xlink">-2</sup> cm xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> /V...
Organic–inorganic hybrid perovskites have exhibited unprecedented advantages for x-ray photon detection due to their exotic properties. Their high-crystalline quality has a great impact high-detection sensitivity under low electric field, especially related the synthesis method. In this work, we analyze capability of CH3NH3PbI3 (MAPbI3) as an material and propose control temperature gradient (TG) during MAPbI3 single crystal device fabrication. Our results show that decreasing TG can...
Abstract Mixed‐dimensional (2D/3D) van der Waals (vdW) heterostructures made with complementary materials hold a lot of promise in the field optoelectronic devices. Beyond simple mechanical stacking, directly growing single‐crystal perovskite on 2D to construct high‐quality vdW heterojunction can better promote carrier transport. In this work, monolithic integrated graphene/perovskite device is fabricated by hybrid monolayer graphene. Due strong interface coupling, achieves self‐powering...
In today's information age, high performance nonvolatile memory devices have become extremely important. Despite their potential, existing suffer from limitations, such as low operation speed, capacity, short retention time, and a complex preparation process. To overcome these advanced designs are required to improve time reduce the number of steps. Here, we present floating-gate-like device based on transistor that uses polarization effect ferroelectric material PZT (Pb[Zr0.2Ti0.8]O3) for...
Abstract Self‐powered photodetectors (SPDs) are regarded as a new type of without external energy sources, exhibiting great potential in the next generation image sensing, biological detection, and robotics. Here, single crystal CH(NH 2 ) PbBr 3 (FAPbBr perovskite with low trap density 1.64 × 10 9 cm −3 is directly integrated onto germanium (Ge). The band structure heterojunction belongs to type‐II alignment type, which beneficial achievement high responsivity. Therefore, fabricated...
Owing to the canonical trade-off between gauge factor and working range, there is an emergent need for strain sensors with customizable sensitivity various applications of different deformation ranges. However, current optimization strategies typically allow possessing either, not both, high-sensing performance or sensing performance. Here, a laser-programmed heterogeneous sensor featured locally coupled electrical mechanical properties (named LCoup sensor) developed access customized...
Abstract Biological synapses are the operational connection of neurons for signal transmission in neuromorphic networks and hardware implementation combined with electrospun 1D nanofibers have realized its functionality complicated computing tasks basic three‐terminal field‐effect transistors gate‐controlled channel conductance. However, it still lacks fundamental understanding that how technological parameters influence intensity information processing neural systems nanofiber‐based...
Abstract Nanoscale tellurium (Te) materials are promising for advanced optoelectronics owing to their many intriguing properties. However, the facile fabrication of highly uniform 1D Te nanostructures has been a challenge. Herein, an electrochemical exfoliation method is developed prepare nanorod (NRs), which can form stable and high concentration suspension in organic solvents. The morphology NRs be well tuned by condition. Flexible photodetectors based on show excellent responsivity 6.1 A...
Abstract Despite extensive research on photoelectric sensors that typically output signals to indicate the transient ultraviolet (UV) intensity, developing wearable, electrometric photodetectors can reveal cumulative UV exposure remains challenging. Here, an organic–inorganic hybrid bulk heterojunction (BHJ) is used construct a skin‐mimicking, wearable photodetector, based conductive polymer sensitized with semiconducting nanoparticles. Owing UV‐induced reduction reactions, BHJ (PDs) long...
As a new-generation photoelectric material, perovskites have attracted researchers' attention due to their excellent optoelectronic properties. However, the existence of defects inevitably causes structural degradation and restricts performance, which need be further improved by post-treatment. At present, post-treatments mostly focus on non-contact treatments, may constrain effect since influence caused direct contact is much more straightly. Therefore, we proposed an annealing strategy...
Here, we demonstrate a high-performance photodetector for wide spectral detection (405 nm-808 nm). The device is based on 2D/3D van der Waals heterojunction (vHJ) by directly integrating MAPbI <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> single crystal (SC) onto monolayer graphene with developed inverse temperature crystallization method (DITC). proposed exhibits high responsivity of 1.45 A/W, an excellent detectivity 6.67×10 <sup...
Recently, the combination of two-dimensional (2D) materials and perovskites has gained increasing attention in optoelectronic applications owing to their excellent optical electrical characteristics. Here, we report a self-driven photodetector consisting monolayer graphene sheet centimeter-sized CH3NH3PbBr3 single crystal, which was prepared using an optimized wet transfer method. The exhibits short response time 2/30 μs by virtue its high-quality interface, greatly enhances electron–hole...
Metal halide perovskites exhibit great promise for utilization in X-ray detection owing to their excellent optoelectronic properties and high attenuation capabilities. However, fabricating large-area thick films high-performance perovskite remains challenging. This study develops an situ crystal growth fusing-confined approach prepare high-quality, large-scale quasi-monocrystalline junctions. The crystals are grown using a highly concentrated colloidal solution 2-methoxyethanol. Introducing...
Abstract Photoelectric memristors have shown great potential for future machine visions, via integrating sensing, memory, and computing (namely “all‐in‐one”) functions in a single device. However, their hard‐to‐tune photoresponse behavior necessitates extra function modules signal encoding modality conversion, impeding such integration. Here, we report an all‐in‐one memristor with Cs 2 AgBiBr 6 perovskite, where the Br vacancy doping‐endowed tunable energy band enables photoresponsivity...
Mechanical exfoliation of bulk layered materials into atomic‐layer thin nanosheets has become a general strategy to obtain 2D nanomaterials, which seems intuitively unsuitable for non‐van der Waals crystals. However, new method is proposed, namely, solvent‐assisted anisotropic cleavage (SAAC), producing nanostructures from transition metal carbides (TMCs), including titanium carbide (TiC) and tungsten (WC). The SAAC harnesses the intrinsic hardness properties TMC enables efficient layers....