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学者姓名：徐中炜
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Abstract ：
金属铂(Pt)是重要金属元素,其因具有良好的机械、热物理和化学性能而在国防科技、航空航天、工业生产等领域被广泛应用.早期的静态高压实验已经证明在常压到高压的过程中,Pt依旧保持面心立方结构(Face-Centered Cubic,FCC).然而,动态高压下Pt的物质结构演化受限于实验观测条件研究并不充分,利用分子动力学模拟研究冲击压缩下Pt的动态响应成为必然.通过理论模拟沿着不同晶向对单晶铂进行冲击,研究发现,结构演化存在明显的晶向依赖性.从力学角度来看,不同晶向的原子排列疏密程度存在差异,使材料内部剪切应力不同;从热力学角度分析,不同晶向的原子排列疏密程度不同,也会使冲击波沿着不同晶向传播,冲击波后的结构会经历不同的热力学路径,从而影响结构演化.
Keyword ：
冲击压缩 冲击压缩 晶向依赖 晶向依赖 结构演化 结构演化 高压科学 高压科学
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| GB/T 7714 | 薛利民 , 徐中炜 . 冲击压缩下金属铂的原子尺度动态响应研究 [J]. | 科技资讯 , 2025 , 23 (2) : 226-231 . |
| MLA | 薛利民 等. "冲击压缩下金属铂的原子尺度动态响应研究" . | 科技资讯 23 . 2 (2025) : 226-231 . |
| APA | 薛利民 , 徐中炜 . 冲击压缩下金属铂的原子尺度动态响应研究 . | 科技资讯 , 2025 , 23 (2) , 226-231 . |
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InP quantum dots (QDs) are considered to be one of the most promising materials for application in light-emitting devices due to the advantages of heavy-metal-free characteristic and widely tunable spectrum covering most of the visible and near-infrared regions. However, the performance of InP quantum dot light-emitting diodes (QLEDs) lags far behind their Cd-containing counterparts, especially as the InP pixelated de-vice is still in its infancy. In this study, multi-component functional QD inks with excellent stability and print-ability was developed for inkjet printing InP array QLEDs. High-quality QD films can be obtained, both on flat and bank-containing substrates, by precisely controlling the competition between capillary and Marangoni flows in the printed droplets, enabling high device performance. In addition, a periodic ZnO microlens arrays was prepared by nanoimprinting technology to enhance the light extraction efficiency of inkjet-printed InP QLEDs, leading to 127.6% improvement in external quantum efficiency (EQE) compared to the control device. The maximum luminance, EQE and current efficiency of the obtained device are 17,759 cd/m2, 8.1% and 11.1 cd/A, respectively. These results may facilitate the applications of high performance environment-friendly QLEDs by inkjet printing technology.
Keyword ：
Inkjet printing Inkjet printing InP quantum dots InP quantum dots Light extraction Light extraction QLEDs QLEDs
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| GB/T 7714 | Bai, Jieyu , Hu, Hailong , Yu, Yongshen et al. Achieving high performance InP quantum dot light-emitting devices by using inkjet printing [J]. | ORGANIC ELECTRONICS , 2023 , 113 . |
| MLA | Bai, Jieyu et al. "Achieving high performance InP quantum dot light-emitting devices by using inkjet printing" . | ORGANIC ELECTRONICS 113 (2023) . |
| APA | Bai, Jieyu , Hu, Hailong , Yu, Yongshen , Zhu, Yangbin , Xu, Zhongwei , Zheng, Wenchen et al. Achieving high performance InP quantum dot light-emitting devices by using inkjet printing . | ORGANIC ELECTRONICS , 2023 , 113 . |
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Perovskite quantum dots light-emitting diodes (PQLEDs), due to the advantages of high luminous efficiency, high color purity, adjustable spectral range, etc., has an excellent prospect in the next generation of high-definition displays. As an indispensable part of displays, blue PQLEDs are usually achieved by mixing halogen, which, however, will lead to halogen ion migration and phase separation of perovskite material at high temperature and bias pressure, thus make the electroluminescent spectrum redshift. In this manuscript, we propose a strategy to inhibit phase separation of blue perovskite quantum dots (PQDs) by introducing alkali metal, and obtain stable perovskite quantum dot light-emitting diodes. The PQLEDs based on this strategy show an external quantum efficiency (EQE) of 1.87% and a brightness of 3757 cd m- 2, and can still guarantee stable electroluminescence (EL) spectra at a bias of up to 14 V. The work is beneficial for probing into the mechanism of suppressing the phase separation of mixed halogen blue PQDs and offer a promising strategy to enhance the color stability of blue PQLEDs.
Keyword ：
Blue light-emitting diodes Blue light-emitting diodes Perovskite quantum dots Perovskite quantum dots Phase separation Phase separation Spectral stability Spectral stability
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| GB/T 7714 | Ju, Songman , Mao, Chaomin , Liu, Yang et al. Inhibiting phase separation of perovskite quantum dots for achieving stable blue light-emitting diodes [J]. | ORGANIC ELECTRONICS , 2022 , 113 . |
| MLA | Ju, Songman et al. "Inhibiting phase separation of perovskite quantum dots for achieving stable blue light-emitting diodes" . | ORGANIC ELECTRONICS 113 (2022) . |
| APA | Ju, Songman , Mao, Chaomin , Liu, Yang , Zhu, Yangbin , Xu, Zhongwei , Yang, Kaiyu et al. Inhibiting phase separation of perovskite quantum dots for achieving stable blue light-emitting diodes . | ORGANIC ELECTRONICS , 2022 , 113 . |
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Effective utilization of natural slight vibration with small movement speed is beneficial to development of energy harvest technology for solving energy problems. However, obtaining high current output when harvesting mechanical energy with ultralow vibration speed is difficult. Here, inspired by stomatopod (mantis) shrimp that has the ability to release pre-stored energy in a rapid action for generating an extremely fast strike, we propose an integrate-and-fire triboelectric (IF-TENG) to realize speed amplification. In this device, input mechanical energy from ultralow-speed vibrations can be firstly integrated, and then be instantaneously released in full when reaching a threshold. Thus, charged friction layers of the TENG can move at a high speed, leading to a relatively high output current. In addition to the speed amplification, the IF-TENG can stabilize the output current at different vibration speeds. Furthermore, we demonstrate that the idea of IF component could be introduced to both vertical contact-separation and lateral-sliding mode TENG for output performance enhancement, which supplies an efficient way for converting ultralow-speed vibration into electricity.
Keyword ：
High output current High output current Integrate-and-fire Integrate-and-fire Low-speed vibrations Low-speed vibrations Speed amplification Speed amplification Triboelectric nanogenerators Triboelectric nanogenerators
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| GB/T 7714 | Xu, Zhongwei , Li, Dianlun , Wang, Kun et al. Stomatopod-inspired integrate-and-fire triboelectric nanogenerator for harvesting mechanical energy with ultralow vibration speed [J]. | APPLIED ENERGY , 2022 , 312 . |
| MLA | Xu, Zhongwei et al. "Stomatopod-inspired integrate-and-fire triboelectric nanogenerator for harvesting mechanical energy with ultralow vibration speed" . | APPLIED ENERGY 312 (2022) . |
| APA | Xu, Zhongwei , Li, Dianlun , Wang, Kun , Liu, Ye , Wang, Jiaxin , Qiu, Zhirong et al. Stomatopod-inspired integrate-and-fire triboelectric nanogenerator for harvesting mechanical energy with ultralow vibration speed . | APPLIED ENERGY , 2022 , 312 . |
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Interactive display devices integrating multiple functions have become a development trend of display technology. The excellent luminescence properties of perovskite quantum dots (PQDs) make it an ideal luminescent material for the next generation of wide-color gamut displays. Here we design and fabricate dual-function light-sensing/displaying light-emitting devices based on PQDs. The devices can display information as an output port, and simultaneously sense outside light signals as an input port and modulate the display information in a non-contact mode. The dual functions were attributed to the device designs: (1) the hole transport layer in the devices also acts as the light-sensing layer to absorb outside light signals; (2) the introduced hole trapping layer interface can trap holes originating from the light-sensing layer, and thus tune the charge transport properties and the light-emitting intensities. The sensing and display behavior of the device can be further modulated by light signals with different time and space information. This fusion of sensing and display functions has broad prospects in non-contact interactive screens and communication ports.
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| GB/T 7714 | Ju, Songman , Zhu, Yangbin , Hu, Hailong et al. Dual-function perovskite light-emitting/sensing devices for optical interactive display [J]. | LIGHT-SCIENCE & APPLICATIONS , 2022 , 11 (1) . |
| MLA | Ju, Songman et al. "Dual-function perovskite light-emitting/sensing devices for optical interactive display" . | LIGHT-SCIENCE & APPLICATIONS 11 . 1 (2022) . |
| APA | Ju, Songman , Zhu, Yangbin , Hu, Hailong , Liu, Yang , Xu, Zhongwei , Zheng, Jinping et al. Dual-function perovskite light-emitting/sensing devices for optical interactive display . | LIGHT-SCIENCE & APPLICATIONS , 2022 , 11 (1) . |
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Perovskite quantum dots (PQDs) have been widely used to realize light-emitting diodes (LEDs) with high color purity, efficiency, and wide color gamut. Due to the demand for huge amount of display information, development on high-resolution PQD LEDs (PQLEDs) with massive pixel density are highly desired. Herein, high-resolution PQLEDs are fabricated by using nanoimprint technique. By preparing a honeycomb-insulating polymer polymethyl methacrylate (PMMA) film, the high-resolution pixelated quantum dot emissive layer is formed. In addition, the leakage current of the device is significantly reduced because the direct contact between electron transport layer and hole transport layer is avoided. The PQLEDs based on nanoimprint technology show a resolution of 9072 pixels per inch (PPI), and a maximum external quantum efficiency (EQE) and brightness of 7.81% and 146 400 cd m(-2), respectively. The results demonstrate that high-resolution PQLEDs can be realized by using nanoimprint technology, holding great commercial potential for next-generation near-eye displays.
Keyword ：
high-resolution high-resolution leakage current leakage current light-emitting diodes light-emitting diodes nanoimprint nanoimprint perovskite quantum dots perovskite quantum dots
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| GB/T 7714 | Mao, Chaomin , Ju, Songman , Zheng, Jinping et al. Ultra-High-Resolution Perovskite Quantum Dot Light-Emitting Diodes [J]. | ADVANCED OPTICAL MATERIALS , 2022 , 11 (4) . |
| MLA | Mao, Chaomin et al. "Ultra-High-Resolution Perovskite Quantum Dot Light-Emitting Diodes" . | ADVANCED OPTICAL MATERIALS 11 . 4 (2022) . |
| APA | Mao, Chaomin , Ju, Songman , Zheng, Jinping , Zheng, Yueting , Xu, Zhongwei , Lin, Lihua et al. Ultra-High-Resolution Perovskite Quantum Dot Light-Emitting Diodes . | ADVANCED OPTICAL MATERIALS , 2022 , 11 (4) . |
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The demonstration of high-resolution quantum-dot light-emitting diodes by transfer printing could prove useful for next-generation displays. With the ever-growing demand for a greater number of pixels, next-generation displays have challenging requirements for resolution as well as colour gamut. Here, to meet this need, quantum-dot light-emitting diodes (QLEDs) with an ultrahigh pixel resolution of 9,072-25,400 pixels per inch are realized via transfer printing combined with the Langmuir-Blodgett film technology. To reduce the leakage current of the devices, a honeycomb-patterned layer of wide-bandgap quantum dots is embedded between the light-emitting quantum-dot pixels as a non-emitting charge barrier layer. Red and green QLEDs are demonstrated. Notably, the red devices achieve a brightness of up to 262,400 cd m(-2) at an applied voltage of 8 V and a peak external quantum efficiency of 14.72%. This work provides a promising way for achieving ultrahigh-resolution QLED devices with high performance.
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| GB/T 7714 | Meng, Tingtao , Zheng, Yueting , Zhao, Denglin et al. Ultrahigh-resolution quantum-dot light-emitting diodes [J]. | NATURE PHOTONICS , 2022 , 16 (4) : 297-, . |
| MLA | Meng, Tingtao et al. "Ultrahigh-resolution quantum-dot light-emitting diodes" . | NATURE PHOTONICS 16 . 4 (2022) : 297-, . |
| APA | Meng, Tingtao , Zheng, Yueting , Zhao, Denglin , Hu, Hailong , Zhu, Yangbin , Xu, Zhongwei et al. Ultrahigh-resolution quantum-dot light-emitting diodes . | NATURE PHOTONICS , 2022 , 16 (4) , 297-, . |
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Memristors based on organic-inorganic halide perovskite have received intensive attention because of its solution-processability and defect-tolerant characteristics. But the lead element in perovskite is inevitably harmful to human body and environment. Herein, we report an e-synapse based on lead-free organic halide perovskite (CH3NH3)(3)Sb2Cl9 (MA(3)Sb(2)Cl(9)), which exhibits excellent mimic of biological synaptic characteristics, such as excitatory postsynaptic currents (EPSCs), inhibitory postsynaptic currents (IPSCs), and paired-pulse facilitation (PPF). Furthermore, the synaptic weight of the e-synapse is found to be dependent on the frequency of pulse stimulation. The charge conduction mechanism of the e-synapse is proposed based on the in-depth investigation of the electrical characteristics of the devices. This work demonstrates that lead-free organic perovskite MA(3)Sb(2)Cl(9) provide a new perspective on engineering e-synapses for neuromorphic computing and have a great potential for environment-friendly artificial intelligence applications.
Keyword ：
Artificial intelligence Artificial intelligence Biology Biology Electrodes Electrodes electronic synapse electronic synapse Indexes Indexes Lead Lead lead-free perovskite lead-free perovskite memristor memristor Memristors Memristors Neurons Neurons Synapses Synapses
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| GB/T 7714 | Ni, Ziquan , Zhu, Yangbin , Ju, Songman et al. E-Synapse Based on Lead-Free Organic Halide Perovskite (CH3NH3)(3)Sb2Cl9 for Neuromorphic Computing [J]. | IEEE TRANSACTIONS ON ELECTRON DEVICES , 2021 , 68 (9) : 4425-4430 . |
| MLA | Ni, Ziquan et al. "E-Synapse Based on Lead-Free Organic Halide Perovskite (CH3NH3)(3)Sb2Cl9 for Neuromorphic Computing" . | IEEE TRANSACTIONS ON ELECTRON DEVICES 68 . 9 (2021) : 4425-4430 . |
| APA | Ni, Ziquan , Zhu, Yangbin , Ju, Songman , Xu, Zhongwei , Tian, Fengqing , Hu, Hailong et al. E-Synapse Based on Lead-Free Organic Halide Perovskite (CH3NH3)(3)Sb2Cl9 for Neuromorphic Computing . | IEEE TRANSACTIONS ON ELECTRON DEVICES , 2021 , 68 (9) , 4425-4430 . |
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The performance of perovskite quantum dot light-emitting diodes (PeQLEDs) has been rapidly enhanced recently, but the devices are still stuck in the stage of using small-scale solution processes, such as spin-coating. In this work, we report the realization of high performance PeQLEDs by using inkjet printing technique. We demonstrate the preparation of a printable perovskite quantum dot ink by using a hybrid solvent consisting of high boiling solvent dodecane and low boiling solvent n-octane. A universal strategy for eliminating coffee rings during inkjet printing of perovskite inks is developed based on the modulation of ink formulation, and the stacking model of perovskite quantum dot in a pixel pit structure is proposed. The inkjet-printed PeLEDs exhibit a low turn-on voltage of 2.7 V, a brightness of 10992 cd/m2 at 6.6 V and a maximum current efficiency of 8.67 cd/ A, which is by far the highest value reported for inkjet-printed PeLEDs. The results pave a way for future realization of high performance pixelated PeLED displays with inkjet printing technique.
Keyword ：
Coffee ring Coffee ring Inkjet printing Inkjet printing PeLEDs PeLEDs Perovskite Perovskite
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| GB/T 7714 | Zheng, Chunbo , Zheng, Xin , Feng, Chen et al. High-brightness perovskite quantum dot light-emitting devices using inkjet printing [J]. | ORGANIC ELECTRONICS , 2021 , 93 . |
| MLA | Zheng, Chunbo et al. "High-brightness perovskite quantum dot light-emitting devices using inkjet printing" . | ORGANIC ELECTRONICS 93 (2021) . |
| APA | Zheng, Chunbo , Zheng, Xin , Feng, Chen , Ju, Songman , Xu, Zhongwei , Ye, Yuliang et al. High-brightness perovskite quantum dot light-emitting devices using inkjet printing . | ORGANIC ELECTRONICS , 2021 , 93 . |
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The development of artificial skin, such as electronic skin, is critical to emerging artificial intelligence systems. Electronic skins reported to date are mechanically flexible, and can detect various stimuli, but lack the ability to regulate themselves and learn information from the outside world. The integration of bio-inspired multifunction in a single electronic platform is critical to the development of e-skin systems. Here, we demonstrate a self-powered, light-stimulated, smart e-skin based on a photosensitive perovskite material. The electronic skin implements the functions of both tactile sensing and photoelectric neural computing. The strategy for developing such a material system and architecture of the electronic skin meets the requirement of multifunctional smart human-machine interfaces and has promising potential for application in future artificial intelligence systems.
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| GB/T 7714 | Xu, Zhongwei , Wu, Chaoxing , Zhu, Yangbin et al. Bio-inspired smart electronic-skin based on inorganic perovskite nanoplates for application in photomemories and mechanoreceptors [J]. | NANOSCALE , 2021 , 13 (1) : 253-260 . |
| MLA | Xu, Zhongwei et al. "Bio-inspired smart electronic-skin based on inorganic perovskite nanoplates for application in photomemories and mechanoreceptors" . | NANOSCALE 13 . 1 (2021) : 253-260 . |
| APA | Xu, Zhongwei , Wu, Chaoxing , Zhu, Yangbin , Ju, Songman , Ma, Fumin , Guo, Tailiang et al. Bio-inspired smart electronic-skin based on inorganic perovskite nanoplates for application in photomemories and mechanoreceptors . | NANOSCALE , 2021 , 13 (1) , 253-260 . |
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