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Storage and transfer of optical excitation energy in GaInP epilayer:Photoluminescence signatures

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Journal of Materials Science & Technology 2019年第7期35卷 1364-1367页

作者： Shijie Xu Ying Huang Zhicheng Su rongxin wang Jianrong Dong Deliang Zhu Department of Physics and Shenzhen Institute of Research and Innovation (HKU-SIRI)The University o f Hong KongPokfulam RoadHong KongChina Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano-tech and Nano-bionicsChinese Academy of SciencesSuzhou215123China Guangdong Research Center for Interfacial Engineering of Functional Materials and College of Materials Science and EngineeringShenzhen UniversityShenzhen518060China

GaInP alloy could be the most trusted key material for fabricating super-high-efficiency single-and multijunction solar cells, especially for space applications. The storage and transfer of optical excitation energy in this key alloy is thus a key subject of the energy conversion from optical to electrical. In this article we present a study of the subject through investigating photoluminescence(PL) degradation in the GaInP epilayer at 4 K under the continuous optical excitations of ultraviolet(UV) 325 nm, visible 488.0 and 514.5 nm lasers. It is found that the decline of PL intensity with the irradiation time may be represented by I(t)/I0=(1 + tτ-1)-1+C, where I0 is the luminescence intensity at the beginning of irradiation, a time constant, and C a background. Moreover, the PL degradation degree reduces with increasing the excitation wavelength. In addition, some red shift of the PL peak is observed accompanying with the intensity decline under the UV laser excitation. These PL signatures indicate that the localized carriers within the local atomic ordering domains play a major role in the storage and transfer of the excitation energy via photon recycling processes.

关键词： GaInP alloy Photoluminescence Energy transfer Photon recycling

Spin injection into heavily-doped n-GaN via Schottky barrier

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Journal of Semiconductors 2023年第8期44卷 57-61页

作者： Zhenhao Sun Ning Tang Shuaiyu Chen Fan Zhang Haoran Fan Shixiong Zhang rongxin wang Xi Lin Jianping Liu Weikun Ge Bo Shen State Key Laboratory of Artificial Microstructure and Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China Frontiers Science Center for Nano-optoelectronics&Collaboration Innovation Center of Quantum Matter Peking UniversityBeijing 100871China Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO) Chinese Academy of SciencesSuzhou 215123China International Center for Quantum Materials Peking UniversityBeijing 100871China

Spin injection and detection in bulk GaN were investigated by performing magnetotransport measurements at low temperatures.A non-local four-terminal lateral spin valve device was fabricated with Co/GaN Schottky *** spin injection efficiency of 21%was achieved at 1.7 *** was confirmed that the thin Schottky barrier formed between the heavily ndoped GaN and Co was conducive to the direct spin tunneling,by reducing the spin scattering relaxation through the interface states.

关键词： GaN spin injection Schottky barrier magnetoresistance

王荣欣教授经验方龙蝉地黄汤合二仙汤对脾肾两虚型难治性肾病综合征的临床分析

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中国中医药现代远程教育 2021年第1期19卷 86-88页

作者：韩蓁王荣欣大连市友谊医院中医科辽宁大连116001 大连市中医医院肾内科辽宁大连116001

目的王荣欣教授经验方龙蝉地黄汤联合二仙汤加味对脾肾两虚型难治性肾病综合征的效果分析。方法选取2018年10月—2020年1月在大连友谊医院中医科就诊的60例难治性肾病综合征患者,随机分为试验组和对照组。对照组30例西医治疗,试验组30... 详细信息

目的王荣欣教授经验方龙蝉地黄汤联合二仙汤加味对脾肾两虚型难治性肾病综合征的效果分析。方法选取2018年10月—2020年1月在大连友谊医院中医科就诊的60例难治性肾病综合征患者,随机分为试验组和对照组。对照组30例西医治疗,试验组30例在对照组的基础上使用王荣欣教授经验方龙蝉地黄汤联合二仙汤加味进行治疗,比较患者治疗后肾功能指标(Upro、TP、ALB、CHOL、BUN以及Scr浓度),和2组患者疗效。结果试验组各项观察指标优于对照组,差异有统计学意义(P<0.05)。结论王荣欣教授经验方龙蝉地黄汤合二仙汤加味治疗难治性肾病综合征,效果显著,值得推广。

关键词：龙蝉地黄汤二仙汤脾肾两虚水肿腰痛尿浊难治性肾病综合征中医药疗法王荣欣

NONTRIVIAL SOLUTION FOR A CLASS OF SEMILINEAR BIHARMONIC EQUATION INVOLVING CRITICAL EXPONENTS

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Acta Mathematica Scientia 2007年第3期27卷 509-514页

作者：姚仰新王荣鑫沈尧天 School of Mathematical Sciences South China University of Technology

In this article, the authors prove the existence and the nonexistence of nontrivial solutions for a semilinear biharmonic equation involving critical exponent by virtue of Mountain Pass Lemma and Sobolev-Hardy inequal... 详细信息

关键词： Biharmonic equation critical exponent singular term nontrivial solution,Sobolev-Hardy inequality

Biomass of Natural Grassland under Different Enclosure Conditions

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Journal of Landscape Research 2016年第1期8卷 69-72页

作者： wang Shunli LIU Xiande JIN Ming ZHANG Xuelong ZHAO Weijun wang rongxin Academy of Water Resources Conservation Forest of Qilian Mountains of Gansu Province

Taking natural grassland on the northern slope of the Qilian Mountain for example, this paper investigated and compared aboveground and belowground biomass of grassland in multi-year enclosure(20 years), one-year enclosure, control areas(natural grazing areas). The results showed that coverage and height of the enclosure sample plots were significantly higher than that of natural grazing area(P one-year enclosure area(299.07 g/m^2) > multi-year enclosure control area(254.39 g/m^2) > one-year enclosure control area(187.37 g/m^2); belowground biomass: multi-year enclosure(2,906.90 g/m^2) > one-year enclosure area(2,587.26 g/m^2) > multi-year enclosure control area(2,378.93 g/m^2) > one-year enclosure control area(2,029.17 g/m^2); mean aboveground biomass of natural grassland was 263.60 g/m^2, mean belowground biomass 2,225.56 g/m^2; ratio of belowground biomass to aboveground biomass varied between 6.79 and 12.90, distribution of belowground biomass and aboveground biomass in each plot showed significant differences(P <0.05). Enclosure was favorable for improving the coverage and biomass of natural grassland plant communities in the Qilian Mountains.

关键词： Natural grassland Aboveground biomass Belowground biomass Enclosure Grazing Coverage

Response of Grassland Biomass to Soil Moisture in the Arid Mountainous Area of the Qilian Mountains

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Journal of Landscape Research 2018年第1期10卷 77-82页

作者： wang Shunli wang rongxin JING Wenmao ZHAO Weijun NIU Yun MA Jian ZHU Hong Academy of Water Resources Conservation Forest of Qilian Mountains of Gansu Province Zhangye Gansu 734000 China Northwest Research Institute of Mining and Metallurgy Baiying Gansu 730900 China

The Pailugou watershed of the Qilian Mountains in the arid region of northeast China was selected for research to analyze the species, height, and biomass in typical mountain grassland with an altitude of 2,700–3,000 m and measure soil moisture, so as to explore the seasonal characteristics of grassland biomass as altitude increases and the relationship between grassland biomass and soil moisture. The results showed that:(1) with a mean value of 135.36 g/m^2, grassland aboveground biomass showed a unimodal distribution from rise to decline as altitude increased, and reached its maximum of 176.79 ± 28.37 g/m^2 at an altitude of 2,900 m; with a mean value of 946.13 g/m^2, grassland underground biomass showed an uptrend as altitude increased, and reached its maximum of 1,301.19 ± 68.24 g/m^2 at an altitude of 3,000 m;(2) the difference between aboveground biomass and underground biomass in the grassland at different altitudes was significant;(3) values of root shoot ratio of the arid mountain grassland varied between 4.14–11.95;(4) values of soil moisture content of the arid mountain grassland varied between 9.23%–31.31%;(5) there was a positive correlation between aboveground biomass and underground biomass and the mean soil moisture content(p < 0.05), with a correlation coefficient of 0.778 4 and 0.784 3 respectively, soil layers with different moisture content made different contributions to grassland biomass, and moisture content in the soil layer where over-60-cm root systems were located was of significance to grassland biomass.

关键词： Mountain grassland Biomass Soil moisture Qilian Mountains

Influence of temperature and reverse bias on photocurrent spectrum and supra-bandgap spectral response of monolithic GalnP/GaAs double-junction solar cell

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Frontiers of Optoelectronics 2016年第2期9卷 306-311页

作者： Zhuo DENG Jiqiang NING rongxin wang Zhicheng SU Shijie XU Zheng XING Shulong LU Jianrong DONG Hui YANG Department of Physics HKU-Shenzhen Institute of Research and Innovation (HKU-SIRI) The University of Hong Kong Hong Kong China Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou 215123 China

In this paper, influence of temperature and reverse bias on photocurrent spectrum and spectral response of a monolithic GalnP/GaAs double-junction solar cell was investigated in detail. Two sharp spectral response offsets, corresponding to the bandedge photo absorption of the bottom GaAs and the top GalnP subcells, respectively, show the starting response points of individual subcells. More interestingly, the cell photocurrent was found to enhance significantly with increasing the temperature. In addition, the cell photocurrent also increases obviously as the reverse bias voltage increases. The integrated photocurrent intensity of the top GalnP subcell was particularly addressed. A theoretical model was proposed to simulate the reverse bias dependence of the integrated photocurrent of the GalnP subceU at different temperatures.

关键词： GalnP alloy GaAs solar cell photocurrent

浅谈人类单基因遗传病较大系谱遗传类型的判断

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生物学通报 2009年第5期44卷 11-13页

作者：王荣新贵阳医学院生物学教研室贵州贵阳550004

简要介绍了人类单基因遗传病较大系谱遗传类型的判断方法。可作为系谱分析、医学生物学教学时的参考。

关键词：单基因遗传病较大系谱遗传类型判断

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大岗山拱坝抗震监测设计

人民长江 2014年第22期45卷 43-46,61页

作者：王蓉川王荣新中国电建集团成都勘测设计研究院有限公司四川成都610072 四川二滩国际工程咨询有限公司四川成都610072

大岗山水电站双曲拱坝最大坝高达210 m,坝址区地震基本烈度为Ⅷ度,在国内外已建和在建的200 m级高拱坝中,设计地震动参数最高。简要分析了工程区所面临的来自鲜水河和安宁河地震带的危险性。介绍了坝区及枢纽建筑物强震监测台网布设及... 详细信息

大岗山水电站双曲拱坝最大坝高达210 m,坝址区地震基本烈度为Ⅷ度,在国内外已建和在建的200 m级高拱坝中,设计地震动参数最高。简要分析了工程区所面临的来自鲜水河和安宁河地震带的危险性。介绍了坝区及枢纽建筑物强震监测台网布设及其监测数据的传输与处理流程。阐述了国内坝工设计中极少采用的抗震钢筋、阻尼器的布设及其监测系统的设计。

关键词：强震动观测光栅钢筋计抗震钢筋大坝阻尼器

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