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The Growth and Fabrication of InGaN/GaN Multi-Quantum Well Solar Cells on Si(111) Substrates

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Chinese Physics Letters 2013年第6期30卷 216-219页

作者： LI Zhi-Dong xiao Hong-Ling wang xiao-liang wang Cui-Mei DENG Qing-Wen JING liang DING Jie-Qin wang Zhan-Guo HOU Xun Key Lab of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083 Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices Beijing 100083 ISCAS-XJTU Joint Laboratory of Functional Materials and Devices for Informatics Beijing 100083 Xi’an Jiaotong University Xi’an 710049

Metalorganic chemical vapor deposition of a crack-free mirror-like surface of InGaN/GaN MQWs on Si(111)substrate is demonstrated,and an InGaN/GaN MQWs solar cell device is *** response measurement of the solar cell devices shows that the fill factor FF=49.4%,open circuit voltage V_(oc)=0.32 V,and short circuit current J_(sc)=0.07 mA/cm^(2),under AM 1.5 G *** order to analyze the influence of material quality on the performance of solar cells,XRD,SEM and Raman scattering experiments are carried *** is found that insertion of a proper top AlN layer can effectively improve the material quality,and therefore enhance the photovoltaic performance of the fabricated device.

关键词： InGaN/GaN Si(111) scattering

Computational Investigation of InxGa1-xN/InN Quantum-Dot Intermediate-Band Solar Cell

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Chinese Physics Letters 2011年第1期28卷 208-211页

作者： DENG Qing-Wen wang xiao-liang YANG Cui-Bai xiao Hong-Ling wang Cui-Mei YIN Hai-Bo HOU Qi-Feng BI Yang LI Jin-Min wang Zhan-Guo HOU Xun Materials Science Center Institute of Semiconductors Chinese Academy of Sciences PO Box 912 Beijing 100083 Key Laboratory of Semiconductor Materials Science Institute of Semiconductors Chinese Academy of SciencesPO Box 912 Beijing 100083 ISCAS-XJTU Joint Laboratory of Functional Materials and Devices for Informatics PO Box 912 Beijing 100083

An Inx Ga1_xN/lnN quantum-dot intermediate-band solar cell is calculated by means of solving the Schrodinger equation according to the Kronig-Penney model. Based on particular assumptions, the power conversion efficiency is worked out. The results reveal that the InxGa1- xN/InN quantum-dot intermediate-band solar cell manifests much larger power conversion efficiency than that of p-n junction solar cells, and the power conversion efficiency strongly depends on the size of the quantum dot and the interdot distance.

关键词： Condensed matter: electrical magnetic and optical Electronics and devices

Cathodoluminescence of Yellow and Blue Luminescence in Undoped Semi-insulating GaN and n-GaN

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Chinese Physics Letters 2011年第3期28卷 184-187页

作者： HOU Qi-Feng wang xiao-liang xiao Hong-Ling wang Cui-Mei YANG Cui-Bai YIN Hai-Bo LI Jin-Min wang Zhan-Guo Materials Science Center Institute of SemiconductorsChinese Academy of SciencesPO Box 912Beijing 100083 Key Laboratory of Semiconductor Materials Science Chinese Academy of SciencesPO Box 912Beijing 100083

Yellow and blue luminescence in undoped GaN layers with different resistivities are studied by *** yellow and blue luminescence bands are observed in semi-insulating GaN,while in n-GaN the yellow luminescence and blue luminescence bands are very *** stronger yellow and blue luminescences in semi-insulating GaN are correlated to the higher edge-type dislocation *** scanning cathodoluminescence image reveals strong defect-related luminescence at the grain boundaries where the dislocations *** is found that the relative intensity of the blue luminescence band to the yellow luminescence band increases with the cathodoluminescence beam energies and is larger in n-GaN with a lower density of edge-type *** approximately 3.35eV shoulder next to the near-band-edge peak is observed in n-GaN but not in semi-insulating GaN.A redshift of the near-band-edge peak with cathodoluminescence beam energy is observed in both samples and is explained by internal absorption.

关键词： GaN luminescence yellow

Uniaxial stress influence on lattice,band gap and optical properties of n-type ZnO:first-principles calculations

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Chinese Physics B 2012年第1期21卷 399-403页

作者： Yang Ping Li Pei Zhang Li-Qiang wang xiao-liang wang Huan Song Xi-Fu Xie Fang-Wei Laboratory of Advanced Manufacturing&Reliability for MEMS/NEMS/OEDS School of Mechanical EngineeringJiangsu UniversityZhenjiang 212013China

The lattice, the band gap and the optical properties of n-type ZnO under uniaxial stress are investigated by first- principles calculations. The results show that the lattice constants change linearly with stress. Band gaps are broadened linearly as the uniaxial compressive stress increases. The change of band gap for n-type ZnO comes mainly from the contribution of stress in the c-axis direction, and the reason for band gap of n-type ZnO changing with stress is also explained. The calculated results of optical properties reveal that the imaginary part of the dielectric function decreases with the increase of uniaxial compressive stress at low energy. However, when the energy is higher than 4.0 eV, the imaginary part of the dielectric function increases with the increase of stress and a blueshift appears. There are two peaks in the absorption spectrum in an energy range of 4.0-13.0 eV. The stress coefficient of the band gap of n-type ZnO is larger than that of pure ZnO, which supplies the theoretical reference value for the modulation of the band gap of doped ZnO.

关键词： uniaxial stress first-principles optical properties n-type ZnO

Distinct effect of potassium 2-(l-hydroxypentyl) - benzoate on hippocampal neurons, synapses and dystrophic axons in APP/PS1 mice

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中国药理学与毒理学杂志 2018年第9期32卷 691-692页

作者： HUANG Long-jian ZHANG Yong LAN Jia-qi wang xiao-liang PENG Ying Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 China

OBJECTIVE To study the protective effect of potassium 2-(l-hydroxypentyl)-benzoate(PHPB) on hippocampal neurons,synapses and dystrophic axons in APP/PS1 *** Ten-month-old male APP/PS1 transgenic mice and age-matched wild-type mice were randomly divided into three groups:wild-type group(WT Con group,n=10),APP/PS1 group(Tg Con group,n=10) and PHPB treated APP/PS1 group(PHPB group,n=10).PHPB group received 30 mg · kg-1 PHPB by oral gavage once daily for 3 *** Con group and Tg Con group received the same volume of *** months later,mice were sacrificed for biochemical and pathological testing such as transmission electron microscopy,Golgi staining and Western boltting *** Under the transmission electron microscope,most hippocampal neurons and subcel ular organel es in WT Con group exhibited normal ***,the degenerative changes were observed in Tg Con group such as nuclear fragmentation,mitochondrial swelling,ribosomes detachment and autophagic vacuoles *** hippocampal synapses number and the thickness of postsynaptic density(PSD) were significantly decreased in Tg Con group compared with the WT Con group(P<0.05).After PHPB treatment,the degenerative changes in APP/PS1 mice were alleviated to some *** synapse number has been elevated significantly(P<0.05) and the PSD has been thickened as *** staining showed that the spine density of secondary and tertiary apical dendritic branches was significantly decreased in CA1 and DG areas of Tg Con group(P<0.05).Sholl analysis revealed a decrease of dendritic complexity in Tg Con group compared with WT Con group(P<0.05).These abnormalities were alleviated to some extent after PHPB *** blotting study showed that the protein levels of synaptic marker PSD-95 and synaptophysin were significantly decreased in the hippocampus of Tg Con group(P<0.05).A significant increase of PSD-95(P<0.05) and a slight increase of SYP were observed after the PHPB t

关键词： potassium 2-(l-hydroxypentyl)-benzoate APP/PS1 mice hippocampal synapse dysfunction dystrophic axons

Ultrasonic assisted dynamic inverse emulsion:a novel polymerization technique to prepare conductive polyaniline/palygorskite composite

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Ultrasonic assisted dynamic inverse emulsion:a novel polymer...

The Valence Band Offset of an Al_(0.17)Ga_(0.83)N/GaN Heterojunction Determined by X-Ray Photoelectron Spectroscopy

第八届中国功能材料及其应用学术会议

作者： ZHANG Zhe wang xiao-liang XU Jian MA Heng-chang LEI Zi-qiang The Ministry of Education Key Laboratory of Eco-Environment-Related Polymer Materials The Gansu Province Key Laboratory Polymer Materials College of Chemistry and Chemical Engineering of Northwest Normal University

ISBN: (纸本)9783037859698

The present work describes an ultrasonic assisted in-situ dynamic inverse emulsion polymerization process of aniline(ANI) in the presence of organic palygorskite(OPGS) in ***-shell structure of electrically conducting polymerized ANI(PANI) combined with OPGS was prepared by utilizing the *** acid(DBSA)was used as the dopant and *** OPGSwas obtained via the chemical reaction of pretreated palygorskite with hexadecyltrimethyl ammonium bromide(HTAB).The prepared PANI/OPGS composite was characterized by FT-IR,UV-Vis,XRD,TGA and *** addition,the conductivity was evaluated at different ANI/OPGS weight *** the ANI/OPGS weight ratio increased to 2:7,the conductivity of the composite still remained at 10 S/m at room *** results demonstrated that ultrasonic assisted dynamic inverse emulsion would be an excellent polymerization technique to increasethe conductivity and the polymerization rate.

关键词： Polyaniline Polygorskite Conductivity Core-shell structure

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Chinese Physics Letters 2013年第5期30卷 124-126页

作者： WAN xiao-Jia wang xiao-liang xiao Hong-Ling wang Cui-Mei FENG Chun DENG Qing-Wen QU Shen-Qi ZHANG Jing-Wen HOU Xun CAI Shu-Jun FENG Zhi-Hong Key Lab of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083 ISCAS-XJTU Joint Laboratory of Functional Materials and Devices for Informatics Beijing 100083 School of Electronic and Information Engineering Xi’an Jiaotong UniversityXi’an 710049 National Key Lab of ASIC Shijiazhuang 050051

The valence band offset(VBO)of an Al_(0.17)Ga_(0.83)N/GaN heterojunction is determined to be 0.13±0.07 eV by x-ray photoelectron *** the obtained VBO value,the conduction band offset(CBO)of~0.22 eV is *** results ind... 详细信息

关键词： N/Ga heterojunction spectroscopy

Isolated laparoscopic resection of the hepatic caudate lobe

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Chinese Medical Journal 2014年第17期127卷 3194-3195页

作者： Cai Xiujun Li Zheyong Yu Hong Liu Kun liang xiao wang Yifan liang Yuelong Department of General Surgery Sir Run Run Shaw Hospital Zhejiang University Institute of Minimally Invasive Surgery of Zhejiang University Key Laboratory of Laparoscopic Technique of Zhejiang Province Hangzhou Zhejiang 310016 China

The caudate lobe （Couinaud＇s segment 1） is located at the posterior part of the liver. Isolated resection of caudate lobe is a major challenge especially when it is carried out laparoscopically. We report a case of successful total laparoscopic resection of caudate lobe using the technique of curettage and aspiration on a hepatic hemangioma which measured 7 cm ×5 cm. As far as we know, this is the first report from Asia on isolated laparoscopic resection of the hepatic caudate lobe.

关键词： laparoscopy hepatic caudate lobe hepatectomy

Molecular Characterization and Expression Pattern of Rheb Gene in Inner Mongolia Cashmere Goat(Capra hircus)

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Agricultural Sciences in China 2011年第9期10卷 1452-1458页

作者： ZHENG Xu YANG Jiao-fu wang xiao-jing liang Yan WU Man-lin SHI Jie-jun ZHANG Tao QIN Yin LI Shu-yu HAO Xi-yan wang Zhi-gang LIU Dong-jun College of Life Science lnner Mongolia University/Key Laboratory of Mammal Reproductive Biology and Biotechnology Ministry of Education Hohhot 010021 P.R.China

As one member of the Ras super family, Rheb is an upstream regulator of mTOR signaling pathway, which regulates the process of cell-growth, proliferation and differentiation. In order to study the relationship between Rheb and mTOR in Inner Mongolian Cashmere goat （Capra hircus） cells, Ras homolog enriched in brain （Rheb） gene eDNA was amplified by RT-PCR. It is 555 bp in length and includes the complete ORF encoding 184 amino acids （GenBank accession no. HM569224）. The full eDNA nucleotide sequence has a 99% identity with that of sheep, 98% with cattle and 93% with human while their amino acids sequence shares identity with 98, 97 and 97% of them, correspondingly. The bioinformatics analysis showed that Rheb has a Ras family domain, two casein kinase II phosphorylation sites, two ATP/GTP-binding sites motifA （P-loop）, a prenyl group binding site （CAAX box）. Tissue-specific expression analysis performed by semi- quantitative RT-PCR. The Rheb gene was expressed in all the tested tissues and the highest level ofmRNA accumulation was detected in brain, suggesting that Rheb played an important role in goat cells.

关键词： Inner Mongolia Cashmere goat Rheb gene expression pattern