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| 1 | Nature of the Precambrian metamorphic blocks in the eastern segment of Central Tianshan:Constraint from geochronology and Nd isotopic geochemistry显示文摘Granitoid gneisses are widespread in Precambrian metamorphic blocks of eastern segment of the Central Tianshan Tectonic Zone, and they have intrusive contact relationships with their metamorphic sedimentary country rocks of Proterozoic Xingxingxia and Kawabulag groups. Zircon U-Pb ages from a granodioritic gneiss (IW11-1) and a parametamorphic schist (W05-9) are determined at the Weiya area. Euhedral prismatic zircons from the granodioritic gneiss (IW11-1) provide U-Pb isotopic discordia intercept ages of 1218±17 Ma and 426±26 Ma, respectively, and euhedral prismatic zircons from the parametamorphic schist (W05-9) display U-Pb isotopic discordia intercept ages of 1216±74 Ma and 290±15 Ma, respectively. A whole-rock Sm-Nd isotopic isochron is determined in augen granitoid gneiss samples at the Gang- gou-Kumishi area and we obtain the isochron age of 1142±120 Ma, and its ε Nd (t) = -4.3. These geochronological data suggest that these Precambrian metamorphic basement blocks within eastern segment of the Central Tianshan Tectonic Zone can be produced during 1140—1220 Ma, and occur a nearly homochronous metamorphism. Integrated to these geochronological data, Nd depleted mantle model ages (T DM ) and epsilon Nd(t) values of these granitoid gneiss samples indicate that they can derive from mixing in various scales both magmas from mantle and crust sources at a late Mesoproterozoic active continental margin tectonic environment. Similarity in geochronology, Sm-Nd isotopic geochemistry between Weiya-Xingxingxia, Pargangtag and Ganggou-Kumishi areas suggests that they could be a bigger uniform metamorphic basement block, which could be formed by the assembly of the supercontinent Rodinia and be separated by late geological processes. | LIU Shuwen,GUO Zhaojie,ZHANG Zhicheng,LI Qiugen & ZHENG Haifei The Key Laboratory of Orogenic Belts and Crustal Evolution,Ministry of Education,China School of Earth and Space Sciences,Peking University,Beijing 100871,China | 2004 | Science China Earth Sciences2004,47,12: | 26 |
| 2 | Application of General Shear Theory to the Study of Formation Mechanism of the Metamorphic Core Complex:A Case Study of Xiaoqinling in Central China显示文摘The kinematic vorticity number and strain of the mylonitic zone related to the detachment fault increase from ESE to WNW along the moving direction of the upper plate of the Xiaoqinling metamorphic core complex (XMCC) and the geometry of quartz c-axis fabrics changes progressively from crossed girdles to single girdles in the same direction. Therefore, pure shear is dominant in the ESE part of the XMCC while simple shear becomes increasingly important towards WNW. However, the shear type does not change with the strain across the shear zone, thus the variation of shear type is of significance in indicating the formation mechanism. The granitic plutons within the XMCC came from the deep source and their emplacement was an active and forceful upwelling prior to the detachment faulting. The PTt path demonstrates that magmatism is an important cause for the formation of the XMCC. The formation mechanism of the XMCC is supposed to be active plutonism and passive detachment. Crustal thickening and magmatic | ZHANG Jinjiang ZHENG Yadong LIU Shuwen | 2000 | Acta Geologica Sinica(English Edition)2000,74,1: | 20 |
| 3 | Potential association of hyperhomocysteinemia with the progression of IgA nephropathy: a retrospective study显示文摘 | Duan Shuwei Liu Shuwen Sun Xuefeng Zheng Ying Liu Linchang Yao Feixiang Wu Jie | 2014 | Chinese Medical Journal2014,,10: | 11 |
| 4 | Characteristics of Turbulent Transfer during Episodes of Heavy Haze Pollution in Beijing in Winter 2016/17显示文摘We analyzed the structure and evolution of turbulent transfer and the wind profile in the atmospheric boundary layer in relation to aerosol concentrations during an episode of heavy haze pollution from 6 December 2016 to 9 January 2017. The turbulence data were recorded at Peking University's atmospheric science and environment observation station. The results showed a negative correlation between the wind speed and the PM2.5 concentration. The turbulence kinetic energy was large and showed obvious diurnal variations during unpolluted(clean) weather, but was small during episodes of heavy haze pollution. Under both clean and heavy haze conditions, the relation between the non-dimensional wind components and the stability parameter z/L followed a 1/3 power law, but the normalized standard deviations of the wind speed were smaller during heavy pollution events than during clean periods under near-neutral conditions. Under unstable conditions, the normalized standard deviation of the potential temperatureσ_θ/|θ_*| was related to z/L, roughly following a –1/3 power law, and the ratio during pollution days was greater than that during clean days. The three-dimensional turbulence energy spectra satisfied a –2/3 power exponent rate in the high-frequency band. In the low-frequency band, the wind velocity spectrum curve was related to the stability parameters under clear conditions, but was not related to atmospheric stratification under polluted conditions. In the dissipation stage of the heavy pollution episode, the horizontal wind speed first started to increase at high altitudes and then gradually decreased at lower altitudes. The strong upward motion during this stage was an important dynamic factor in the dissipation of the heavy haze. | Yan REN Shuwen ZHENG Wei WEI Bingui WU Hongsheng ZHANG Xuhui CAI Yu SONG | 2018 | Journal of Meteorological Research2018,32,1: | 9 |
| 5 | Identification of HBsAg-specific antibodies from a mammalian cell displayed full-length human antibody library of healthy immunized donor显示文摘肝炎 B 免疫球蛋白(HBIG ) 在肝炎 B 的管理是重要的病毒(HBV ) 感染。试图作为 HBIG 的一种选择开发 recombinant monoclonal 抗体,我们报导 HBV 表面抗原(HBsAg ) 的成功的鉴定从在哺乳动物的房间上显示的一个全身的人的抗体图书馆的特定的抗体出现。把一个生来地使免疫的施主的外部血 mononuclear 房间的全部的 RNA 用作模板,抗体全部剧目被放大。联合四方法的结扎和 Flp 调停 recombinase 的集成(Flp 在里面) 系统,我们构造了每个房间在显示了一个种仅仅抗体分子的一个哺乳动物的基于房间的、充分人的、全身的抗体显示图书馆。由屏蔽使用激活荧光的房间排序的房间图书馆(FACS ) ,八个房间克隆显示那房间表面上的 HBsAg 特定的抗体被识别。抗体基因的 DNA 顺序分析揭示了三唯一的抗体。FACS 数据显示了那荧光灯表示(FSE ) 的力量,荧光灯绑定(FSB ) 的力量和相对有约束力的能力(RBA ) 都在他们之中是不同的。这些结果由使用我们的抗体表明了那哺乳动物的显示和屏蔽站台,我们能成功地从一个使免疫的全身的抗体图书馆识别抗原特定的抗体。因此,这个平台为治疗学的抗体的开发是很有用的。 | Chang-Zheng Li Zhong-Kun Liang Zhen-Rui Chen Hai-Bo Lou Ye Zhou Zhe-Huan Zhang Fei Yu Shuwen Liu Yuanping Zhou Shuguang Wu Wenling Zheng Wanlong Tan Shibo Jiang Chen Zhou | 2012 | Cellular & Molecular Immunology2012,9,2: | 7 |
| 6 | Modeling of the eddy viscosity by breaking waves显示文摘Breaking wave induced nearsurface turbulence has important consequences for many physical and biochemical processes including water column and nutrients mixing,heat and gases exchange across air-sea interface.The energy loss from wave breaking and the bubble plume penetration depth are estimated.As a consequence,the vertical distribution of the turbulent kinetic energy(TKE),the TKE dissipation rate and the eddy viscosity induced by wave breaking are also provided.It is indicated that model results are found to be consistent with the observational evidence that most TKE generated by wave breaking is lost within a depth of a few meters near the sea surface.High turbulence level with intensities of eddy viscosity induced by breaking is nearly four orders larger than υwl(=κuwz),the value predicted for the wall layer scaling close to the surface,where uw is the friction velocity in water,κ with 0.4 is the von Kármán constant,and z is the water depth,and the strength of the eddy viscosity depends both on wind speed and sea state,and decays rapidly through the depth.This leads to the conclusion that the breaking wave induced vertical mixing is mainly limited to the near surface layer,well above the classical values expected from the similarity theory.Deeper down,however,the effects of wave breaking on the vertical mixing become less important. | ZHANG Shuwen YUAN Yeli ZHENG Quan' an | 2007 | Acta Oceanologica Sinica2007,26,6: | 6 |
| 7 | Technology and engineering application of cross area HVDC interconnection system high-precision simulation modeling based on ADPSS显示文摘In recent years, a large number of high voltage direct current(HVDC) transmission projects have been connected to AC systems. This has started to have an impact on AC/DC hybrid power grids, particularly receiving terminal power grids. An HVDC system is a large-scale power electronic integrated nonlinear system, and it includes a primary system and a control and protection system. Hence, the precision and degree of detail of HVDC systems directly affect the actual effect of simulation. In recent years, in the case of the normal operation and failure of AC power grids, the abnormal fluctuation and even locking of HVDC systems caused by the inappropriate strategies of the control and protection system component have strongly affected power grids. This has significantly affected the safety and stability of receiving power grids and normal operation. In this study, the actual engineering HVDC control logic provided by a manufacturer is analyzed and simulated based on the user defined component library of the ADPSS electromagnetic transient calculation program, and an HVDC control model based on an actual system is established. The accuracy of the DC control custom model based on ADPSS is verified through the simulation of an actual power grid. | Weijie Zheng Jianfeng Yan Xujiang Chen Shuwen Xu Yalou Li | 2018 | Global Energy Interconnection2018,1,5: | 3 |
| 8 | Sensing and lasing applications of whispering gallery mode microresonators显示文摘 | Yu Zheng Zhifang Wu Perry Ping Shum Zhilin Xu Gerd Keiser Georges Humbert Hailiang Zhang Shuwen Zeng Xuan Quyen Dinh | 2018 | Opto-Electronic Advances2018,1,9: | 3 |
| 9 | Advances in Structural Geology and Tectonics in the Late 20th Century: A Review显示文摘在最后世纪,和历史的变化在 100 年在 GeoRef 系统基于构造地质学和 tectonics 的文件的份额的分析国际( 31 年)并且国内( 16 年)在构造地质学和 tectonics 记录各种各样的话题的计数,在地球科学的构造地质学和 tectonics 的位置被评估,板块构造说,大陆人动力学和全球动力学的地里的主要副词王牌被考察。我们的注意主要在结构的分析,变丑机制和岩石的流变学的研究集中于进展, contractional tectonics 并且迟了 -- andpost-orogenic 前在 orogens,大规模走向滑倒差错 andindentation 挤出 tectonics,活跃 tectonics 和本位号的紧张的倒塌冒险。有岩石学和地球年代学的构造地质学和 tectonics 的关系也以科学学科的交叉被讨论。最后,一些建议在中国为构造地质学和 tectonics 的进一步的发展被建议。 | DONG Shuwen ZHENG Yadong CHEN Xuanhua SHI Jing | 2006 | Acta Geologica Sinica(English Edition)2006,80,3: | 3 |
| 10 | Syn-deformation P-T paths of Xiaoqinling metamorphic core complex显示文摘The \%P_T\% paths of the Xiaoqinling metamorphic core complex (XMCC) have been investigated with the Gibbs method by researching the compositional changing of zoned epidotes which formed during syn_deformation metamorphism. These \%P_T\% paths indicate that the XMCC had experienced the following thermodynamics processes: firstly, near isobaric falling slightly in temperature in lower crust; secondly, fast decompression and rising in temperature during extensional uplifting to middle crust level; and finally, isobaric falling in temperature in middle crust. The upwelling and emplacement of the deep magma may be a major factor during the uplifting processes of the metamorphic core complex. | Shuwen Liu Jinjiang Zhang Yadong Zheng | 1998 | Chinese Science Bulletin1998,43,22: | 3 |
| 11 | Unusual coastal ocean cooling in the northern South China Sea by a katabatic cold jet associated with Typhoon Mujigea(2015)显示文摘This study deals with a unusual cooling event after Typhoon Mujigea passed over the northern South China Sea(SCS) in October 2015. We analyze the satellite sea surface temperature(SST) time series from October 3 to 18,2015 and find that the cooling process in the coastal ocean had two different stages. The first stage occurred immediately after typhoon passage on October 3, and reached a maximum SST drop of –2℃ on October 7 as the usual cold wake after typhoon. The second stage or the unusual extended cooling event occurred after 7d of the typhoon passage, and lasted for 5d from October 10 to 15. The maximum SST cooling was –4℃ and occurred after 12d of typhoon passage. The mechanism analysis results indicate that after landing and moving northwestward to the Yunnan-Guizhou Plateau(YGP), Typhoon Mujigea(2015) met the westerly wind front on October 5. The lowpressure and positive-vorticity disturbances to the front triggered meridional air flow and low-pressure trough,thus induced a katabatic cold jet downward from the Qinghai-Tibet Plateau(QTP) passing through the YGP to the northwestern SCS. The second cooling reached the maximum SST drop 4d later after the maximum air temperature drop of –9℃ on October 11. The simultaneous air temperature and SST observations at three coastal stations reveal that it is this katabatic cold jet intrusion to lead the unusual SST cooling event. | Yuxin Shi Lingling Xie Quanan Zheng Shuwen Zhang Mingming Li Junyi Li | 2019 | Acta Oceanologica Sinica2019,38,5: | 2 |
| 12 | Tiaozhi Tongmai Granules reduce atherogenesis and promote the expression of ATP-binding cassette transporter A1 in rabbit atherosclerotic plaque macrophages and the liver显示文摘Objective:ATP-binding cassette transporter A1(ABCA1)is an integral membrane protein that plays a key role in cellular lipid metabolism,preventing the accumulation of lipids that contribute to the initiation and progression of atherosclerosis.Tiaozhi Tongmai Granules are a Chinese herbal compound that is capable of treating atherosclerosis.This study was designed to explore the potential pharmacological mechanism by which Tiaozhi Tongmai Granules protect against atherosclerosis.Methods:Forty-nine male New Zealand rabbits were randomly divided into seven groups:normal control group,normal diet;model groups 1 and 2:balloon injury and high-fat diet for 6 or 12 weeks;statin groups 1 and 2:balloon injury and high-fat diet plus atorvastatin for 6 or 12 weeks;and Chinese herb groups 1 and 2:balloon injury and high-fat diet plus Tiaozhi Tongmai Granules for 6 or12 weeks.The granules were administered at a dose of 1.14 g/kg/d,with atorvastatin(1.14 mg/kg/d)serving as positive control.Serum lipid profiles and liver function indices were measured.Atherogenesis was viewed after H&E staining and quantified by thickened intimal area percentage and maximal intimal thickness percentage.The ABCA1 protein expression in atherosclerotic plaque macrophages of the common carotid arteries(CCA),thoracic aortae(TA),and liver tissues were observed by immunohistochemical staining and evaluated using mean optical density(OD)value in macrophages and ABCA1-positive hepatocyte number.Results:Compared with model group 1 at week 6,Chinese herb group 1 and statin group 1 displayed significant reductions in total cholesterol(TC)(PZ0.027,0.012)and low-density lipoprotein cholesterol(LDL-C)(PZ0.039,0.028)levels,as well as marked increases in ABCA1-positive hepatocyte numbers(P all<0.001),and only statin group 1 displayed a markedly reducedmaximal intimal thickness percentage in the CCA(P Z 0.018).Compared with model group 2 at week 12,Chinese herb group 2 and statin group 2 all presented significant reductions in TC(P Z 0.011,0.003),LDL-C(P Z 0.017,0.010)and thickened intimal area percentage in the CCA(P Z 0.001,0.022),as well as prominent increases in the ABCA1 OD value of both the CCA(P Z 0.001,0.039)and TA(P Z 0.001,0.025)and positive hepatocyte number(P all<0.001).Chinese herb group 2 had a markedly reduced maximal intimal thickness percentage compared with model group 2(P Z 0.006)and a higher positive hepatocytes number than statin group 2(P Z 0.001).Conclusions:Tiaozhi Tongmai Granules appear to have an anti-atherogenic effect that is most likely mediated by simultaneously upregulating the protein expression of ABCA1 in rabbit atherosclerotic plaque macrophages and in the liver. | Qing Sun Lu Zhang Shuwen Guo Min Zheng Dandan Yang Chenglong Zheng Jiani Wu Jian Liu Jingping Wu | 2014 | Journal of Traditional Chinese Medical Sciences2014,1,1: | 2 |
| 13 | Advantage of dual wavelength light-emitting diodes with dip-shaped quantum wells显示文摘Dual-wavelength light-emitting diodes (DW-LEDs) with dip-shaped quantum wells have been studied by numerical simulation.The emission spectra,light output power,carrier concentration in the quantum wells and internal quantum efficiency are investigated.The simulation results indicate that the DW-LEDs with dip-shaped quantum wells perform better than conventional LEDs with rectangular quantum wells in terms of light output power,leakage current and efficiency droop.These improvements in the electrical and optical characteristics are mainly attributed to the alleviation of the electrostatic field in the dip-shaped quantum wells. | XU YiQin FAN GuangHan ZHOU DeTao LI Xin LU TaiPing ZHAO Fang ZHANG YunYan ZHENG ShuWen GONG ChangChun | 2012 | Chinese Science Bulletin2012,57,20: | 2 |
| 14 | CAS-FGOALS Datasets for the Two Interglacial Epochs of the Holocene and the Last Interglacial in PMIP4显示文摘Two versions of the Chinese Academy of Sciences Flexible Global Ocean-Atmosphere-Land System model(CASFGOALS),version f3-L and g3,are used to simulate the two interglacial epochs of the mid-Holocene and the Last Interglacial in phase 4 of the Paleoclimate Modelling Intercomparison Project(PMIP4),which aims to study the impact of changes in orbital parameters on the Earth’s climate.Following the PMIP4 experimental protocols,four simulations for the mid-Holocene and two simulations for the Last Interglacial have been completed,and all the data,including monthly and daily outputs for the atmospheric,oceanic,land and sea-ice components,have been released on the Earth System Grid Federation(ESGF)node.These datasets contribute to PMIP4 and CMIP6(phase 6 of the Coupled Model Intercomparison Project)by providing the variables necessary for the two interglacial periods.In this paper,the basic information of the CAS-FGOALS models and the protocols for the two interglacials are briefly described,and the datasets are validated using proxy records.Results suggest that the CAS-FGOALS models capture the large-scale changes in the climate system in response to changes in solar insolation during the interglacial epochs,including warming in mid-to-high latitudes,changes in the hydrological cycle,the seasonal variation in the extent of sea ice,and the damping of interannual variabilities in the tropical Pacific.Meanwhile,disagreements within and between the models and the proxy data are also presented.These datasets will help the modeling and the proxy data communities with a better understanding of model performance and biases in paleoclimate simulations. | Weipeng ZHENG Yongqiang YU Yihua LUAN Shuwen ZHAO Bian HE Li DONG Mirong SONG Pengfei LIN and Hailong LIU | 2020 | Advances in Atmospheric Sciences2020,37,10: | 2 |
| 15 | Autophagosome activity in macrophage for atherosclerotic plaques in ApoE^-/-mice enhanced by Tiaozhi Tongmai Granules显示文摘Objective:Atherosclerosis is the fundamental pathophysiologic component of cardiovascular disease,and Tiaozhi Tongmai Granules show great efficiency in the treatment of the disease.However,the mechanism of Tiaozhi Tongmai Granules is still unclear.In this study,we have combined experiments with network pharmacology to explore the antiatherosclerosis mechanism of Tiaozhi Tongmai Granules.Method:120 male ApoE/mice were randomly divided into three groups:the model group,Chinese herb group and Atorvastatin group.The model group,Atorvastatin group and Chinese herb group were fed with a high-fat diet,a high-fat diet plus atorvastatin(5.1 mg/kg/d)and a high-fat diet plus Tiaozhi Tongmai Granules(16.5 g/kg/d)for 16 weeks,respectively.Atherogenesis was identified by H&E staining.The colocalization of neutral lipid stain BODIPY and microtubule-associated protein 1 light chain 3(LC3)and the colocalization of BODIPY and lysosomal-associated membrane protein 1(LAMP1)within ApoE/mice aortic plaques were tested using fluorescence confocal microscopy and the Pearson’s coefficients were calculated.To further explore the anti-atherosclerosis mechanism of Tiaozhi Tongmai Granules,the network pharmacology was used to construct the herb-compound-target network.Results:The size of the aortic lipid plaque in the Chinese herb group and Atorvastatin group were smaller compared with the model group on the 16th week.Compared with the model group on the 16th week,the BODIPY and LC3 colocalization rate,the BODIPY and LAMP1 colocalization rate of the Chinese herb group and Atorvastatin group all presented significant increase in the aortic plaque(P<.001),showing that Tiaozhi Tongmai Granules could enhance autophagosome activity in the macrophage.In the herb-compound-target network,17 active compounds and 27 targets were obtained through literature searching and using LHRI&DAVID Bioinformatics.It was found that 23 targets were correlated with the macrophage.Some of them participated in macrophage inflammatory response,and the other targets could promote/inhibit phagocytosis of the macrophage.It was hypothesized that the active compounds of Tiaozhi Tongmai Granules were acting on these targets and having y the biological effects.Conclusions:In the progression stage of atherosclerosis,Tiaozhi Tongmai Granules can still make the macrophage have higher autophagosome activity,and play a role of anti-atherogenesis. | Chenglong Zheng Qing Sun Lu Zhang Shuwen Guo Min Zheng Yan Tang Jiangong Wu Jiani Wu Wenchen Liu Zhaoduo Su Xi Chen | 2015 | Journal of Traditional Chinese Medical Sciences2015,2,3: | 2 |
| 16 | Orbital-regulated interfacial electronic coupling endows Ni3N with superior catalytic surface for hydrogen evolution reaction显示文摘The interstitial structure and weak Ni-N interaction of Ni3N lead to high unoccupied d orbital energy and unsuitable orbital orientation,which consequently results in weak orbital coupling with H2O and slow water dissociation kinetics for alkaline hydrogen evolution catalysis.Herein,we successfully lower the unoccupied d orbital energy of Ni3N to strengthen the interfacial electronic coupling by employing the strong electron pulling capability of oxygen dopants.The prepared O-Ni3N catalyst delivers an overpotential of 55 mV at 10 mA cm−2,very close to the commercial Pt/C.Refined structural characterization indicates the oxygen incorporation can decrease the electron densities around the Ni sites.Moreover,density functional theory calculation further proves the oxygen incorporation can create more unoccupied orbitals with lower energy and superior orientation for water adsorption and dissociation.The concept of orbital-regulated interfacial electronic coupling could offer a unique approach for the rational design of hydrogen evolution catalysts and beyond. | Yanyan Fang Da Sun Shuwen Niu Jinyan Cai Yipeng Zang Yishang Wu Linqin Zhu Yufang Xie Yun Liu Zixuan Zhu Amirabbas Mosallanezhad Di Niu Zheng Lu Junjie Shi Xiaojing Liu Dewei Rao Gongming Wang Yitai Qian | 2020 | Science China Chemistry2020,63,11: | 1 |
| 17 | Robust speaker recognition integrating pitch and wiener filter显示文摘 | Junmei Bai Rong Zheng Bo Xu Shuwen Zhang | 2004 | ISCSLP2004,,: | 1 |
| 18 | Research on the nonlinear hysteretic response characteristics of intelligent vibra- tory roller under horizontal excitation mode显示文摘 | Lin Shuwen Zheng Shuhe | 2013 | Ad- vanced Materials Research2013,694,: | 1 |
| 19 | Accelerating water dissociation kinetics of Ni3N by tuning interfacial orbital coupling显示文摘The high unoccupied d band energy of Ni_(3)N basically results in weak orbital coupling with water molecule,consequently leading to slow water dissociation kinetics.Herein,we demonstrate Cr doping can downshift the unoccupied d orbitals and strengthen the interfacial orbital coupling to boost the water dissociation kinetics.The prepared Cr-Ni_(3)N/Ni displays an impressive overpotential of 37 mV at 10 mA·cmgeo-2,close to the benchmark Pt/C in 1.0 M KOH solution.Refined structural analysis reveals the Cr dopant exists as the Cr-N_(6)states and the average d band energy of Ni_(3)N is also lowered.Density functional theory calculation further confirms the downshifted d band energy can strengthen the orbital coupling between the unpaired electrons in O 2p and the unoccupied state of Ni 3d,which thus facilitates the water adsorption and dissociation.The work provides a new concept to achieve on-demand functions for hydrogen evolution catalysis and beyond,by regulating the interfacial orbital coupling. | Yishang Wu Yufang Xie Shuwen Niu Yipeng Zang Jinyan Cai Zenan Bian Xuanwei Yin Yanyan Fang Da Sun Di Niu Zheng Lu Amirabbas Mosallanezhad Huijuan Wang Dewei Rao Hongge Pan Gongming Wang | 2021 | Nano Research2021,14,10: | 1 |
| 20 | Investigation of GaN-based light-emitting diodes using a p-GaN/i-InGaN short-period superlattice structure as last quantum barrier显示文摘In this work,GaN-based light-emitting diodes(LEDs) with a p-GaN/i-InGaN short-period superlattice(SPSL) structure,p-GaN and undoped GaN last quantum barrier(LQB) have been numerically investigated by using the APSYS simulation software.It has been found that the efficiency droop is significantly improved when the undoped GaN LQB in a typical blue LED is replaced by a p-GaN/i-InGaN SPSL structure.According to the simulation analysis,using the p-GaN/i-InGaN SPSL structure as LQB is beneficial to increasing the hole injection efficiency and decreasing the electron current leakage.Therefore,the radiative recombination and optical power are enhanced. | LIU XiaoPing FAN GuangHan ZHENG ShuWen GONG ChangChun LU TaiPing ZHANG YunYan XU YiQin ZHANG Tao | 2013 | Science China(Technological Sciences)2013,56,1: | 1 |