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Journal of Wuhan University of Technology(Materials Science) 2023年第1期38卷 72-78页

作者：吕烨 luo shengyun School of Materials Science and Engineering Guizhou Minzu UniversityGuiyang 550025China

Cu-Mn_(3)O_(4)composite coating was prepared on the SUS 430 ferritic stainless steel by electrodeposition and then exposed in air at 800℃corresponding to the cathode atmosphere of solid oxide fuel cell(SOFC).A dual-layer oxide structure mainly comprising an external layer of CuO followed by(Cu,Mn,Fe)_(3)O_(4)spinel and an internal layer of Cr-rich oxide was thermally developed on the coated steel.The scale area-specific resistances(ASRs)of the coated steels were lower than the scale ASR of the uncoated steel after identical thermal exposure.The external layer of CuO/(Cu,Mn,Fe)_(3)O_(4)spinel not only served as a barrier to reduce the growth rate of Cr-rich oxide internal layer and to suppress the outward diffusion of Cr,but also lowered the surface scale ASRs considerably.

关键词： solid oxide fuel cell steel interconnect Cu-Mn_(3)O_(4)composite coating area specific resistance

A self-powered ultraviolet photodetector with van der Waals Schottky junction based on TiO_(2) nanorod arrays/Au-modulated V2CTx MXene

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Journal of Materials Science & Technology 2023年第25期156卷 83-91页

作者： Guangcan luo Ziling Zhang Yabing Wang Qun Deng Shengtao Pan Tengfei Wang Qinghong Li Kaixiang Liu Pengfei Kong Jing Zhang shengyun luo Hong Lin Laboratory of Optoelectronic Materials and Devices Key Laboratory of New Energy and NanomaterialsSchool of Materials Science and EngineeringGuizhou Minzu UniversityGuiyang 550025China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Research Center for Humanoid Sensing Zhejiang LabHangzhou 311100China

A self-powered ultraviolet photodetector(UV PD)with van der Waals(vdW)Schottky junction based on TiO_(2) nanorod arrays/Au-modulated V2 CTx MXene is reported.The Schottky junction enables the device to operate in self-powered mode.The dangling bond-free surface of V2 CTx MXene reduces the charge recombination at the junction interface.Meanwhile,V2 CTx MXene,with the work function(WF)increasing to 5.35 eV,forms a hole transport layer by contacting with Au electrode,which facilitates the carrier extraction.The electron lifetime in the device has prolonged to 8.95μs.As a result,the responsivity and detectivity of the PD have achieved 28 mA/W and 1.2×10^(11) cm Hz1/2/W(340 nm,65 mW/cm2,0 V),respectively.In addition,the presence of the Au electrode prevents the vanadium from coming into contact with oxygen and oxidizing,preserving the properties of the V2 CTx films.After 180 days of exposure to the atmosphere,the device performance remained at a particularly high level,indicating enhanced durability.This work points out an effective approach to modulate the properties of V2 CTx to obtain the high performance and stability of the UV PD.

关键词： TiO_(2)nanorod arrays V2CT MXene Work function Ultraviolet photodetectors Device stability

Bound states in the continuum in all-dielectric metasurfaces with scaled lattice constants

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Science China(Physics,Mechanics & Astronomy) 2023年第12期66卷 101-109页

作者： Mimi Zhou Shaojun You Lei Xu Menghui Fan Jing Huang Wenbin Ma Mingzhe Hu shengyun luo Mohsen Rahmani Ya Cheng Lin Li Chaobiao Zhou Lujun Huang Andrey E.Miroshnichenko School of Physics and Mechatronic Engineering Guizhou Minzu UniversityGuiyang 550025China School of Chemical Engineering Guizhou Minzu UniversityGuiyang 550025China School of Materials Science and Engineering Guizhou Minzu UniversityGuiyang 550025China Advanced Optics and Photonics Laboratory Department of EngineeringSchool of Science TechnologyNottingham Trent UniversityNottingham NG118NSUK Extreme Optoelectromechanics Laboratory(XXL) School of Physics and Electronic SciencesEast China Normal UniversityShanghai 200241China State Key Laboratory of Precision Spectroscopy School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China School of Engineering and Information Technology University of New South Wales at CanberraCanberra ACT 2610Australia

Bound states in the continuum(BICs)have emerged as an efficient tool for trapping light at the nanoscale,promising several exciting applications in photonics.Breaking the structural symmetry has been proposed as an effective way of exciting quasiBICs(QBICs)and generating high-Q resonances.Herein,we demonstrate that QBICs can be excited in an all-dielectric metasurface by scaling the lattice of the metasurface,causing translational symmetry breaking.The corresponding BICs arise from band folding from the band edge to the Γ point in the first Brillouin zone.Multipole analysis reveals that the toroidal dipole dominates these QBICs.Furthermore,scaling the lattice along different directions provides additional freedom for tailoring QBICs,enabling polarization-dependent or-independent QBICs.In addition,this allows the realization of two QBICs at different wavelengths using plane-wave illumination with different polarizations on the metasurface.We experimentally demonstrated the existence of these BICs by fabricating silicon metasurfaces with scaled lattices and measuring their transmission spectra.The vanished resonant linewidth identifies BICs in the transmission spectrum,and the QBICs are characterized by highQ Fano resonances with the Q-factor reaching 2000.Our results have potential applications in enhancing light-matter interaction,such as laser,nonlinear harmonic generation,and strong coupling.

关键词： lattice perturbation bound state in the continuum dielectric nanostructure

介孔结构CeO_(2)对丙酮的敏感响应研究

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分析试验室 2023年第6期42卷 711-716页

作者：周欢喜王鑫罗胜耘邹平杨洋贵州民族大学机械电子工程学院贵阳550025 贵州民族大学材料科学与工程学院贵阳550025

采用水热法一步合成制备了一种多面体介孔结构CeO_(2),并用于有机挥发性气体的检测。利用扫描电子显微镜(SEM)和透射电子显微镜(TEM)观察形貌、尺寸和结构,X射线衍射(XRD)、拉曼光谱(Raman)和X射线光电子能谱(XPS)分析其晶体结构和化学... 详细信息

采用水热法一步合成制备了一种多面体介孔结构CeO_(2),并用于有机挥发性气体的检测。利用扫描电子显微镜(SEM)和透射电子显微镜(TEM)观察形貌、尺寸和结构,X射线衍射(XRD)、拉曼光谱(Raman)和X射线光电子能谱(XPS)分析其晶体结构和化学成分,利用全自动气体吸附分析仪分析其孔径大小。结果表明:制备的CeO_(2)为多面体介孔结构,孔隙主要孔径小于4 nm。CeO_(2)传感器在240℃时响应最佳,对100 cm3/m3甲醇、甲醛、乙醇、乙醚、丙酮、乙二醇和二甲苯等气体的检测中,丙酮气体的响应值最高为550%,其对应的响应和恢复时间分别为16 s和4 s。该传感器在60 d内具有较高的稳定性,相对标准偏差值(RSD)为2.0%。

关键词： CeO_(2) 介孔结构挥发性有机化合物丙酮气敏机理

Defects Induced by Fast Neutron Irradiation in GaAs

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Chinese journal of nuclear physics 1996年第4期18卷 231-235页

作者： Zhu shengyun luo Qi Fan Zhiguo Li Anli Gou Zhenghui Zheng Shennan China Institule of Alomic Energy,P.O.Box 275-50,Beijing 102413Qian Jiayu Beijing General Research Institule for Non-ferrous Metals.Beijing 100088 中国原子能科学院北京

Defects induced by 5 and 9.5 MeV fast neutron irradiations in N-type HB single crystal GaAsare studied by the positron annihilation lifetime technique.Mono-and di-vacancies are created for the neu-tron irradiation to a fluence of 1013 n/cm2 and only rnono-vacancies are produced for the neutron irradia-tion to a fluence of 1011～1012n/cm2.It is found that the higher the irradiating neutron energy and flu-ence,the higher the intensity of the produced defects.As a result the defect production rate becomes in-creasingly more sensitive to the neutron fluence than to the neutron energy.The annealing behavior of thedefects is also investigated up to 750℃.Tri-vacaneies are formed between 450 and 620℃ in GaAs irra-diated to 1013 n/cm2 by 9.5 MeV neutrons.Three annealing stages are observed for the mono-,di-andtri-vacancies.

关键词： —CaAs 5 and 9.5 MeV fast neutrons Defects Positron lifetime

膜厚对导电氧化锌宽带抗反射涂层的太赫兹传输影响

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真空科学与技术学报 2012年第8期32卷 717-721页

作者：罗胜耘沈杰马国宏李栋复旦大学材料科学系上海200433 贵州民族学院理学院贵阳550025 上海大学物理系上海200444

利用直流磁控溅射方法,在石英基底上制备了可用于太赫兹电磁波频率范围内的宽带抗反射涂层的掺铝氧化锌导电薄膜。在太赫兹时域光谱频率0.1~1.0THz范围内研究不同厚度的氧化锌薄膜的介电响应,得到了与频率相关的电导率、吸收和薄膜折射... 详细信息

利用直流磁控溅射方法,在石英基底上制备了可用于太赫兹电磁波频率范围内的宽带抗反射涂层的掺铝氧化锌导电薄膜。在太赫兹时域光谱频率0.1~1.0THz范围内研究不同厚度的氧化锌薄膜的介电响应,得到了与频率相关的电导率、吸收和薄膜折射率,着重研究了膜厚对太赫兹波传输特性的调制作用。实验结果很好地符合了经典的Drude模型,表明可以通过控制氧化锌薄膜的厚度来改变太赫兹波的传输特性,并且导电氧化锌薄膜能够作为太赫兹频段范围的宽带抗反射涂层应用于衬底和光学器件上。

关键词：太赫兹时域光谱导电氧化锌膜宽带抗反射薄膜厚度

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两种不同衬底上ZnO纳米棒的合成与表征

化工新型材料 2019年第12期47卷 169-172页

作者：杨琴罗胜耘陈家荣贵州民族大学机械电子工程学院贵阳550025 贵州民族大学材料科学与工程学院贵阳550025

采用脉冲激光沉积(PLD)和水热法相结合,在Si和氧化铟锡(ITO)导电玻璃衬底上制备了ZnO纳米棒,并用场发射扫描电子显微镜(FE-SEM)、X射线衍射仪(XRD)、光致发光(PL)和拉曼(Raman)散射对所制备的ZnO纳米棒进行表征。FE-SEM结果显示在Si衬... 详细信息

采用脉冲激光沉积(PLD)和水热法相结合,在Si和氧化铟锡(ITO)导电玻璃衬底上制备了ZnO纳米棒,并用场发射扫描电子显微镜(FE-SEM)、X射线衍射仪(XRD)、光致发光(PL)和拉曼(Raman)散射对所制备的ZnO纳米棒进行表征。FE-SEM结果显示在Si衬底上生长的ZnO纳米棒覆盖密度较高,垂直性较好。XRD结果表明(002)相是ZnO纳米棒的最佳生长方向。XRD及Raman结果都揭示了ZnO的六角铅锌矿结构。PL光谱表明两种衬底生长的ZnO纳米棒均呈现出较强的紫外发射性质,两个紫外发射峰之间的红移是由于晶粒尺寸的大小以及ZnO薄膜中的应力所致。

关键词： ZnO纳米棒脉冲激光沉积水热法光致发光

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贵州民族大学模拟电路课程改革探究

贵州民族大学学报（哲学社会科学版） 2015年第3期 188-191页

作者：罗胜耘贵州民族大学理学院贵州贵阳550025

本文从贵州民族大学学生的特点出发,针对目前模拟电路教学过程中出现的问题,分别从"课程教材改革"和"课堂教学改革"两个方面进行改革,提出了教材应包含当下流行运算放大器、模拟乘法器和贴片元件的观点,重点阐述了教学模式和学生创新能... 详细信息

本文从贵州民族大学学生的特点出发,针对目前模拟电路教学过程中出现的问题,分别从"课程教材改革"和"课堂教学改革"两个方面进行改革,提出了教材应包含当下流行运算放大器、模拟乘法器和贴片元件的观点,重点阐述了教学模式和学生创新能力培养的改革思路。

关键词：贵州民族大学模拟电路课程教学改革

2002-2023年青海湖裸鲤增殖放流效果评估

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青海科技 2024年第2期31卷 29-33页

作者：付生云祁洪芳罗颖青海湖裸鲤救护中心西宁810016 青海省青海湖裸鲤繁育与保护重点实验室西宁810016

20世纪60-70年代因过度捕捞导致青海湖裸鲤资源量锐减,致使青海湖裸鲤种群结构遭到破坏。虽然1994年起青海省实施封湖育鱼政策,但鱼群自然恢复充满困难。因此,青海湖裸鲤救护中心从2002年开始实施增殖放流活动。文章对2002-2023年青海... 详细信息

20世纪60-70年代因过度捕捞导致青海湖裸鲤资源量锐减,致使青海湖裸鲤种群结构遭到破坏。虽然1994年起青海省实施封湖育鱼政策,但鱼群自然恢复充满困难。因此,青海湖裸鲤救护中心从2002年开始实施增殖放流活动。文章对2002-2023年青海湖裸鲤增殖放流进行了评估,结果显示青海湖中裸鲤的资源总量从2149万尾、2592吨上升到5.6亿尾、11.4万吨,累计放流青海湖裸鲤原种种苗近2.2亿尾,人工增殖放流对青海湖裸鲤资源恢复的直接贡献率达到26%,增殖放流效果显著。

关键词：青海湖裸鲤增殖放流效果评估

非晶氧化物半导体薄膜晶体管沟道层的研究进展

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半导体技术 2017年第6期42卷 401-410,474页

作者：岳兰任达森罗胜耘陈家荣贵州民族大学信息工程学院贵阳550025

薄膜晶体管(TFT)作为开关元件广泛应用于平板显示领域,沟道层材料的选择直接影响了TFT的性能。近年来,基于非晶氧化物半导体(AOS)沟道层材料的TFT已成为具有潜力替代传统硅材料(非晶硅或多晶硅)沟道层TFT的新一代技术,有望应用于超大屏... 详细信息

薄膜晶体管(TFT)作为开关元件广泛应用于平板显示领域,沟道层材料的选择直接影响了TFT的性能。近年来,基于非晶氧化物半导体(AOS)沟道层材料的TFT已成为具有潜力替代传统硅材料(非晶硅或多晶硅)沟道层TFT的新一代技术,有望应用于超大屏显示、3D显示、柔性显示以及透明显示等新一代显示领域。综述了AOS TFT沟道层的研究进展,重点介绍了AOS TFT用AOS沟道层在材料体系、成膜技术、薄膜的后续处理工艺、材料体系中各元素含量以及掺杂等方面的研究成果,并分析了AOS沟道层对AOS TFT性能的影响以及存在的问题,对AOS TFT的未来发展趋势进行了预测和展望。

关键词：薄膜晶体管(TFT) 非晶氧化物半导体(AOS) 沟道层成膜技术薄膜组分掺杂