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Fabrication and field emission performance of arrays of vacuum microdiodes containing CuO nanowire emitters grown directly on glass without a catalyst

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Chinese Science Bulletin 2011年第9期56卷 906-911页

作者： SHAO PengRui deng shaozhi CHEN Jun XU NingSheng State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Materials and TechnologySchool of Physics and Engineering Sun Yat-sen University Guangzhou 510275 China

真空 microelectronic 来源的数组用含铜的氧化物(CuO ) 在玻璃底层上被制作 nanowire emitters。电子来源的数组拥有 microdiode 结构，它能有效地导致域排放并且在三极管类型设备操作控制射出的电子的交货到阳极。为没有使用催化剂并... 详细信息

真空 microelectronic 来源的数组用含铜的氧化物(CuO ) 在玻璃底层上被制作 nanowire emitters。电子来源的数组拥有 microdiode 结构，它能有效地导致域排放并且在三极管类型设备操作控制射出的电子的交货到阳极。为没有使用催化剂并且在象 400 潩?敦摥慢正瀠牡浡瑥牥甠楳杮琠敨猠瑡汥楬整猭湥敳?潎浲污穩摥?晩敦敲据?敖敧慴楴湯?摮硥?一样低的温度，精确在一个数组在 microcavities 的中心种 CuO nanowires 的一种技术???湡?扯敳癲摥琠浥数慲畴敲?潦?桴?数楲摯ㄠ?有????污?敳獡湯?瘠来瑥瑡潩?硥牥獴愠洠'?瑳潲杮牥映牯楣杮漠??慭?桴湡漠??業?愠摮琠畨?慨???獢慴瑮慩?晥敦瑣漠?桴?楤牵慮?整灭牥瑡牵?慲杮??剔?癯牥?楨慮?楓湧晩捩湡?潰楳楴敶映敥'N捡獫漠??慭?湡?桴?呄?耶喌嚊?牡慥?景?楨慮眠瑩?桴?

关键词：真空微电子器件场发射性能纳米线氧化铜催化剂阵列排放玻璃

Enhanced Performance of a Monolayer MoS_2/WSe_2 Heterojunction as a Photoelectrochemical Cathode

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Nano-Micro Letters 2018年第4期10卷 52-60页

作者： Jingwei Xiao Yu Zhang Huanjun Chen Ningsheng Xu shaozhi deng State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and Technology School of Electronics and Information Technology Sun Yat-sen University

Transition-metal dichalcogenide(TMD) semiconductors have attracted interest as photoelectrochemical(PEC) electrodes due to their novel band-gap structures,optoelectronic properties, and photocatalytic ***, the photo-harvesting efficiency still requires improvement. In this study, A TMD stacked heterojunction structure was adopted to further enhance the performance of the PEC cathode. A P-type WSe_2 and an N-type Mo S_2 monolayer were stacked layer-by-layer to build a ultrathin vertical heterojunction using a micro-fabrication *** situ measurement was employed to characterize the intrinsic PEC performance on a single-sheet *** from its built-in electric field and type II band alignment, the MoS_2/WSe_2 bilayer heterojunction exhibited exceptional photocatalytic activity and a high incident photo-to-current conversion efficiency(IPCE). Comparing with the monolayer WSe_2 cathode, the PEC current and the IPCE of the bilayer heterojunction increased by a factor of 5.6 and enhanced 50%, respectively. The intriguing performance renders the MoS_2/WSe_2 heterojunction attractive for application in high-performance PEC water splitting.

关键词： MoS2/WSe2 Monolayer Bilayer Heterojunction Photoelectrochemical cathode

Room-temperature strong coupling between dipolar plasmon resonance in single gold nanorod and two-dimensional excitons in monolayer WSe_2

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Chinese Physics B 2018年第9期27卷 144-150页

作者： Jinxiu Wen Hao Wang Huanjun Chen shaozhi deng Ningsheng Xu State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and TechnologySun Yat-sen UniversityGuangzhou 510275China School of Electronics and Information Technology Sun Yat-sen UniversityGuangzhou 510006China School of Physics Sun Yat-sen UniversityGuangzhou 510275China School of Applied Physics and Materials Wuyi UniversityJiangmen 529020China

All-solid-state strong coupling systems with large vacuum Rabi splitting energy have great potential applications in future quantum information technologies, such as quantum manipulations, quantum information storage and processing,and ultrafast optical switches. Monolayer transition metal dichalcogenides（TMDs） have recently been explored as excellent candidates for the observation of solid-state strong coupling phenomena. In this work, from both experimental and theoretical aspects, we explored the strong coupling effect by integrating an individual plasmonic gold nanorod into the monolayer tungsten diselenide（WSe2）. Evident anti-crossing behavior was observed from the coupled energy diagram at room temperature; a Rabi splitting energy of 98 meV was extracted.

关键词： Au nanorod-WSe2 heterostructures strong coupling all-solid-state system room temperature

Fluorescent,multifunctional anti-counterfeiting,fast response electrophoretic display based on TiO_(2)/CsPbBr_(3)composite particles

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Light(Science & Applications) 2024年第10期13卷 2168-2178页

作者： Guangyou Liu Xinzao Wu Feng Xiong Jinglan Yang Yunhe Liu Jie Liu Zhuohang Li Zong Qin shaozhi deng Bo-Ru Yang State Key Laboratory of Opto-electronic Materials and Technology.Guangdong Province Key Laboratory of Display Materials and Technologies School of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510006China

Traditional optical anti-counterfeiting(AC)is achieved by static printed images,which makes them susceptible to lower levels of security and easier ***,it is essential to develop AC device with dynamic modulation for higher *** display(EPD)has the advantages of low power consumption,high ambient contrast ratio,and capability of showing dynamic images which is suitable for dynamic AC ***,we prepared a dynamical AC device based on a fluorescent EPD,and achieving the image switch between black,white,and green fluorescence states under the dual-mode driving(electronic field and Uv light).We loaded perovskite quantum dots(CsPbBr3)onto the TiO_(2) particles and further prepared fluorescent electrophoretic particles TiO_(2)/CsPbBr_(3)-3-PLMA(TiO/CPB-3)by grafting and polymerizing *** addition,We fabricated the AC devices based on the fluorescent EPD,which exhibits the multifunctional AC,where the fluorescent EPD has a fast response time of 350 ms,a high contrast ratio of 17,and bright green *** prototype demonstrates a new way for future dynamic AC and identification.

关键词： dynamic composite ambient

Ultrafast flash memory with large self-rectifying ratio based on atomically thin MoS_(2)-channel transistor

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Materials Futures 2022年第2期1卷 153-162页

作者： Liwei Liu Yibo Sun Xiaohe Huang Chunsen Liu Zhaowu Tang Senfeng Zeng David Wei Zhang shaozhi deng Peng Zhou Frontier Institute of Chip and System Fudan UniversityShanghai 200433People’s Republic of China State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433People’s Republic of China State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and TechnologySchool of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510275People’s Republic of China

Flash memory with high operation speed and stable retention performance is in great demand to meet the requirements of big *** addition,the realisation of ultrafast flash memory with novel functions offers a means of combining heterogeneous components into a homogeneous device without considering impedance *** report proposes a 20 ns programme flash memory with 10^(8) self-rectifying ratios based on a 0.65 nm-thick MoS_(2)-channel transistor.A high-quality van der Waals heterojunction with a sharp interface is formed between the Cr/Au metal floating layer and h-BN tunnelling *** addition,the large rectification ratio and low ideality factor(n=1.13)facilitate the application of the MoS_(2)-channel flash memory as a bit-line select ***,owing to the ultralow MoS_(2)/h-BN heterojunction capacitance(50 fF),the memory device exhibits superior performance as a high-frequency(up to 1 MHz)sine signal *** results pave the way toward the potential utilisation of multifunctional memory devices in ultrafast two-dimensional NAND-flash applications.

关键词： ultra-fast flash memory metal floating gate atomic sharp interface atomic thin channel self-rectification transistor high-frequency rectifier

Sensitive direct-conversion X-ray detectors formed by ZnO nanowire field emitters andβ-Ga_(2)O_(3)photoconductor targets with an electron bombardment induced photoconductivity mechanism

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Photonics Research 2021年第12期9卷 2420-2428页

作者： ZHIPENG ZHANG MANNI CHEN XINPENG BAI KAI WANG HUANJUN CHEN shaozhi deng JUN CHEN State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and TechnologySchool of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510275China

Sensitive X-ray detection is needed in diverse areas motivated by a common desire to reduce radiation *** cathode X-ray detectors operating with a photoelectron multiplication mechanism called electron bombardment induced photoconductivity(EBIPC)have emerged as promising candidates for low-dose X-ray ***,the cold cathode detectors formed by ZnO nanowire field emitters andβ-Ga_(2)O_(3)photoconductor targets were proposed for sensitive direct-conversion X-ray *** charge carrier transport mechanism of EBIPC effect in X-ray detectors was investigated to achieve a high internal gain(2.9×10^(2))and high detection sensitivity(3.0×10^(3)μCGy^(−1)_(air)cm^(−2))for a 6 keV X-ray at the electric field of 22.5 Vμm−***,the proposed X-ray detectors showed the features of fast response time(40 ms),long-term stability(0.6%for 1 h),and low detection limit(0.28 mGy_(air)s^(−1)),suggesting that the direct-conversion cold cathode X-ray detectors are ideal candidates for low-energy X-ray detecting and imaging applications.

关键词： mechanism field limit

Low-temperature Synthesis of Large-area Films of Molybdenum Trioxide Microbelts in Air and the Dependence of Their Field Emission Performance on Growth Conditions

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Journal of Materials Science & Technology 2010年第7期26卷 584-588页

作者： Dongmei Ban,Ningsheng Xu,shaozhi deng,Jun Chen and Juncong She State Key Lab of Optoelectronic Materials and Technologies,Guangdong Province Key Laboratory of Display Material and Technology,School of Physics and Engineering,Sun Yat-sen University,Guangzhou 510275,China State Key Lab of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and Technology School of Physics and Engineering Sun Yat-sen University Guangzhou 510275 China

A simple method is introduced for the preparation of large-area films of molybdenum trioxide （MoO3） microbelts. It is found that such films can be grown on indium tin oxide （ITO） glasses or silicon substrates at low temperatures by thermal evaporation deposition in air without using catalyst. Field emission measurements show that the turn-on field of the MoO3 microbelts is as low as 2.2 V/μm required to obtain a current density of 10 μA/cm^2, The combination of the simplicity of the growth method and the attractive field emission performance makes it a potential low-cost technique for the preparation of large-area field emission cold cathode material.

关键词： Field emission Large-area film Molybdenum trioxide Microstructures and synthesis

Graphene Decorated with Noble Metal Nanorods and Its Surface-Enhanced Raman Scattering Activity

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Graphene Decorated with Noble Metal Nanorods and Its Surface...

Research of Boron-based Nanostructures

中国真空学会2014学术年会

作者： Lei Zhang Huanjun Chen shaozhi deng Ningsheng Xu State Key Lab of Optoelectronic Materials and Technologies Guangdong Province Key Lab of Display Material and TechnologySchool of Physics and EngineeringSun Yat-sen University

Surface-enhanced Raman scattering(SERS)is an important spectroscopic technique for the struc-tural analysis of low-concentration *** this work,we fabricate a composite substrate that is applied for SERS *** combines single layer graphene(SLG)with gold nanorods synthesized by seeded growth *** the composite substrate,gold nanorods covered by single layer graphene provide substantive hot spots for the SRES detection of molecules to be analyzed and graphene can also improve Raman scattering signal when taking the chemical mechanism into *** experiment results are shown in Figure 1.

关键词： surface-enhanced Raman scattering gold nanorod graphene plasmon

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Research of Boron-based Nanostructures