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Study on impedance spectroscopy based on dynamic equivalent circuit of solar cell

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Optoelectronics Letters 2024年第8期20卷 449-453页

作者： x.ao wenbo LI ao WU Huaming LI Yongbo x.ao Bangzhi Key Laboratory of Nondestructive Testing Ministry of EducationNanchang Hangkong UniversityNanchang 330063China Jiangxi Engineering Laboratory for Optoelectronics Testing Technology Nanchang 330063China College of Science and Technology Nanchang Hangkong UniversityGongqingcheng 332020China School of Engineering and Construction Nanchang UniversityNanchang 330031China

This paper investigates the impedance spectroscopy of monocrystalline silicon solar cells(MSSC)and dye-sensitized solar cells(DSSC)using solar cell dynamic equivalent resistor-capacitance(RC)and capacitor sum capacitor(CSC)***,these circuits effectively represent the dynamic behavior of MSSC and ***,the measurement method significantly impacts the accuracy of impedance measurements in the high-frequency ***,the series resistance affects the distance between the left end of the impedance spectroscopy and the origin,while the parallel resistance influences the size of the impedance *** the CSC circuit,the relative magnitudes of dielectric relaxation capacitance and chemical capacitance affect the number and position of arc in the impedance *** value of the dielectric relaxation capacitor determines the number of impedance spectroscopy *** conclusions provide guidelines for improving the accuracy of solar cell impedance measurements.

关键词： spectroscopy impedance capacitance

Construction of a broadband impedance spectrum and synchronous DC voltammetry measurement system for solar cells

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Journal of Measurement Science and Instrumentation 2024年第3期15卷 302-307页

作者： x.ao wenbo LI ao WU Huaming LI Yongbo College of Science and Technology Nanchang Hangkong UniversityJiujiang 332020China Key Laboratory for Optoelectronic Information Perception and Instrumentation of Jiangxi Province Nanchang Hangkong UniversityNanchang 330063China Key Laboratory of Nondestructive Testing of Ministry of Education Nanchang Hangkong UniversityNanchang 330063China

The current impedance spectroscopy measurement techniques face difficulties in diagnosing solar cell faults due to issues such as cost,complexity,and ***,a novel system was developed for precise broadband impedance spectrum measurement of solar cells,which was composed of an oscilloscope,a signal generator,and a sampling *** results demonstrate concurrent accurate measurement of the impedance spectrum(50 Hz-0.1 MHz)and direct current voltametric *** analysis with Keithley 2450 data yields a global relative error of approximately 6.70%,affirming the *** excitation signals(sine,square,triangle,pulse waves),sine wave input yields the most accurate data,with a root mean square error of approximately 13.3016 and a global relative error of approximately 4.25%compared to theoretical *** reference resistance expands the half circle in the impedance *** of reference resistance to that of the solar cell enhances the accuracy by mitigating line resistance *** error is lower in high-frequency regions due to a higher signal-to-noise ratio.

关键词： solar cell oscilloscope signal generator volt-ampere characteristics impedance spectrum

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A third dose of inactivated SARS-CoV-2 vaccine induces robust antibody responses in people with inadequate response to two-dose vaccination

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National Science Review 2022年第7期9卷 14-16页

作者： Taicheng Zhou Tianpei Shi ao Li Lingzhi Zhu xinshuai Zhao Naiyin Mao Wanting Qin Hanfang Bi Mei Yang Muxian Dai Fengwei Liu Rong Wang Wei Su Liang Zhang wenbo xu Jia Wei Zijie Zhang Central Laboratory and Liver Disease Research Center The Affiliated Hospital of Yunnan UniversityYunnan University State Key Laboratory for Conservation and Utilization of Bio-resource and School of Life Sciences Yunnan University State Key Laboratory of Genetic Resources and Evolution and Yunnan Laboratory of Molecular Biology of Domestic Animals Kunming Institute of Zoology Chinese Academy of Sciences College of Life Science University of Chinese Academy of Sciences NHC Key Laboratory of Medical Virology and Viral Diseases National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention

Mass application of SARS-CoV-2 vaccines is a major approach to reduce SARS-CoV-2 transmission and COVID-19 symptoms *** inactivated SARS-CoV-2 vaccine is one of the most widely administered vaccine types in many countries,with over 2 billion doses administered as of 31 August ***, clinical trials estimate 65%-85%protection from detectable symptoms for inactivated SARS-C oV-2 vaccines [1-4],

关键词：

The Initial Case of COVID-19—Shulan City,Jilin Province,China,May 8,2020

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China CDC weekly 2020年第25期2卷 458-459页

作者： Cao Chen xiang Zhao Dayan Wang Juan Li ao Wang Donglin Wu Zhix.ao Chen Yuchao Wu Yao Meng Weifeng Shi George FGao Guizhen Wu Biao Huang wenbo xu National Health Commission Key Laboratory for Medical Virology and Viral Diseases National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina Center for Biosafety Mega-Science Chinese Academy of SciencesWuhanChina Jilin Provincial Center for Disease Control and Prevention JilinChina Key Laboratory of Etiology and Epidemiology of Emerging Infectious Diseases in Universities of Shandong Shandong First Medical Universityand Shandong Academy of Medical SciencesTaianChina

Coronavirus disease 2019(COVID-19)was designated a global pandemic by the World Health Organization(WHO)on March 11,2020(1).After great effort,COVID-19 has been well-controlled in China,but new challenges have emerged due to increasing numbers of imported cases from outside of *** May 8,the Health Commission of Jilin Province reported a confirmed COVID-19 case of a 45-year-old laundry woman from Shulan City in the northeast of *** case was suspected to be associated with a possible importation event.

关键词： northeast outside Jilin

Printable SnO2 cathode interlayer with up to 500 nm thickness-tolerance for high-performance and large-area organic solar cells

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Printable SnO2 cathode interlayer with up to 500 nm thicknes...

第七届新型太阳能电池材料科学与技术学术研讨会

作者： Shuai Zhang Yiming Bai Yiman Dong wenbo Huo Yuting Liu Ruyue Wang Zhan'ao Tan Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University

The printable electrode interlayer with excellent thickness tolerance is crucial for mass production of organic solar cells(OSCs) by solution-based print ***,high-quality printable SnO films are simply fabricated by spin-coating or blade-coating the chemical precipitated SnO colloid precursor with post thermal annealing *** interfacial electron trap density of SnO cathode interlayers(CILs) are very low and show negligible increase as the thicknesses increase from 10 to 160 nm,resulting in slight change of the power conversion efficiencies(PCEs) of the PM6:Y6 based OSCs from 16.10% to 13.07%.For blade-coated SnO CIL,the PCE remains high up to 12.08% even the thickness of SnO CIL is high up to 530 *** strikingly,the large-area OSCs of 100 mm with printed SnO CILs obtain a high efficiency of 12.74%.

关键词： organic solar cells printable SnO2 cathode interlayer thickness-insensitivity large-area

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抗茶角胸叶甲茶树资源的筛选

中国植保导刊 2024年第1期44卷 67-71,108页

作者：康彦凯丁玎杨辉杨文波李赛君瞿玉国段继华周凌云湖南省茶叶研究所湖南长沙410125 湖南省古丈县特色产业服务中心湖南古丈416300 湖南大学生物学院隆平分院湖南长沙410125

在茶角胸叶甲暴发流行于茶树资源圃的次月,通过测定当年生茶枝第3叶虫孔数目与为害面积,鉴定评价了57份茶树种质材料对茶角胸叶甲(Basilepta melanopus Lefevre)的抗虫性和抗性等级。研究表明,所鉴定材料中未发现完全免疫的茶树资源,但... 详细信息

在茶角胸叶甲暴发流行于茶树资源圃的次月,通过测定当年生茶枝第3叶虫孔数目与为害面积,鉴定评价了57份茶树种质材料对茶角胸叶甲(Basilepta melanopus Lefevre)的抗虫性和抗性等级。研究表明,所鉴定材料中未发现完全免疫的茶树资源,但明确61-丰-01、宋坳73-01、中叶黄、白毫早、槠叶齐抗虫性强,同时发现福大60、雨大3号、苦茶47与苦茶3号均为中高感茶树品种(系)。57份茶树种质资源之间抗茶角胸叶甲能力存在较大差异,中小叶种和苦茶资源抗虫性较差,在抗虫性品种选育时可进行规避。

关键词：茶种质资源茶角胸叶甲危害率

经椎板间隙小开窗与经椎弓根椎体内植骨治疗胸腰椎爆裂型骨折的比较研究

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中国修复重建外科杂志 2017年第6期31卷 670-676页

作者：覃建朴王翀敖俊廖文波遵义医学院附属医院脊柱外科贵州遵义563000

目的探讨经椎板间隙小开窗与经椎弓根椎体内植骨治疗Denis A、B型胸腰椎爆裂型骨折的重建效果和远期稳定性差异。方法回顾分析2012年1月—2014年2月,采用椎体内植骨成形联合椎弓根钉棒系统内固定术治疗的50例Denis A、B型胸腰椎爆裂型... 详细信息

目的探讨经椎板间隙小开窗与经椎弓根椎体内植骨治疗Denis A、B型胸腰椎爆裂型骨折的重建效果和远期稳定性差异。方法回顾分析2012年1月—2014年2月,采用椎体内植骨成形联合椎弓根钉棒系统内固定术治疗的50例Denis A、B型胸腰椎爆裂型骨折患者的临床资料。其中,30例术中采用经伤椎椎板间隙小开窗椎体内植骨(A组),20例采用经伤椎单侧椎弓根椎体内植骨(B组)。两组患者除术前Cobb角比较,差异有统计学意义(P0.05)。记录并比较两组患者后凸Cobb角、伤椎前缘高度百分比及腰背部疼痛、神经功能恢复情况。结果两组患者均获随访,A组随访时间16~31个月,平均19.1个月;B组17~25个月,平均20.2个月。两组术后切口均Ⅰ期愈合,无神经损伤等手术相关并发症发生。两组术前存在神经功能损伤患者,除Frankel A级患者外,其余患者神经功能均有不同程度改善。两组患者腰背部疼痛均较术前缓解,术后3个月、末次随访时VAS评分与术前比较,差异均有统计学意义(P0.05)。x线片复查示,随访期间两组均未发生断钉、退钉、断棒、内固定松动等;伤椎椎体内植骨填充良好,植骨融合。术后伤椎椎体高度均恢复良好,A、B组术后1周、3个月及末次随访时伤椎前缘高度百分比及后凸Cobb角与术前比较,差异有统计学意义(P0.05)。两组间术后各时间点以上两指标比较,差异均无统计学意义(P>0.05)。结论对于Denis A、B型胸腰椎爆裂型骨折,经椎板间隙小开窗或经椎弓根进行椎体内植骨联合椎弓根钉棒系统内固定术治疗均能较好恢复椎体高度和矫正后凸并维持椎体稳定,降低了内固定物松动、断裂等并发症发生风险。因此,可根据患者椎管占位严重程度、椎体塌陷情况及脊髓神经损伤程度,选择合适植骨通道。

关键词：胸腰椎爆裂型骨折椎弓根椎板间隙植骨

局部山体地形对断层动力学破裂过程的影响研究

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地震学报 2018年第6期40卷 737-752,831页

作者：王铭锋郑傲于湘伟章文波中国地震局地球物理研究所中国北京100081 中国科学院大学地球科学学院中国北京100049

基于曲线网格有限差分方法研究了垂直走滑断层在不同山体地形情况下的动力学破裂传播,分析并讨论了局部山体地形对断层破裂过程及相应地面地震动的影响,得到了各模型断层面的动力学破裂过程及相应的地表峰值速度特征。研究结果表明,山... 详细信息

基于曲线网格有限差分方法研究了垂直走滑断层在不同山体地形情况下的动力学破裂传播,分析并讨论了局部山体地形对断层破裂过程及相应地面地震动的影响,得到了各模型断层面的动力学破裂过程及相应的地表峰值速度特征。研究结果表明,山体地形尺度(山体高度及底部延展距离等)对断层动力学破裂过程影响较大,进而影响到相应的地面地震动分布。当山体地形处于自由地表上亚剪切向超剪切转换的位置附近时,山体地形会阻碍断层面上自由地表超剪切的产生。一般而言,对于具有一定埋深的断层,当山体地形底部延展距离一定时,山体高度越高,其对自由地表超剪切的阻碍程度越大;当山体高度一定时,地形底部延展距离越大,越会阻碍自由地表超剪切的产生,这种破裂过程的变化会导致相应地面地震动呈现不同特征的分布。此外,还探讨了断层破裂过程及相应地震动对成核区外初始剪切应力变化的响应,结果显示,当初始剪切应力较高时,高应力降引起的超剪切破裂会对断层破裂及相应的地震动分布起主导作用。

关键词：震源动力学地形效应超剪切破裂强地面运动有限差分

微创通道下开窗减压椎体内植骨经皮椎弓根螺钉内固定治疗Denis B型胸腰椎爆裂骨折

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中国修复重建外科杂志 2016年第8期30卷 985-991页

作者：陈林覃建朴伍富俊廖文波敖俊遵义医学院附属医院脊柱外科贵州遵义563003

目的探讨微创通道下经椎板间隙开窗减压、椎体内植骨结合经皮椎弓根螺钉内固定术治疗Denis B型胸腰椎爆裂骨折的可行性及临床疗效。方法 2013年1月-2015年3月,收治53例Denis B型胸腰椎爆裂骨折患者,采用微创通道下经椎板间隙开窗减压、... 详细信息

目的探讨微创通道下经椎板间隙开窗减压、椎体内植骨结合经皮椎弓根螺钉内固定术治疗Denis B型胸腰椎爆裂骨折的可行性及临床疗效。方法 2013年1月-2015年3月,收治53例Denis B型胸腰椎爆裂骨折患者,采用微创通道下经椎板间隙开窗减压、椎体内植骨结合经皮椎弓根螺钉内固定术治疗。男37例,女16例;年龄16~57岁,平均43岁。致伤原因:高处坠落伤23例,交通事故伤15例,重物砸伤7例,摔伤8例。受伤至手术时间7 h^12 d,平均6.7 d。骨折节段:T11 2例,T12 7例,L1 20例,L2 18例,L3 6例。神经功能按美国脊柱损伤委员会(ASIA)分级标准:A级3例,B级5例,C级12例,D级24例,E级9例。记录手术时间、术中出血量、术后引流量,采用疼痛视觉模拟评分(VAS)评价术后切口疼痛程度;根据ASIA分级标准评估神经功能恢复情况。复查正侧位x线片及CT,观察骨折愈合以及植骨融合、吸收情况;计算椎管通畅率,评价椎管减压情况;测量伤椎前、后缘相对高度及Cobb角,评估后凸矫正丢失情况。结果手术时间90~240 min,平均150 min;术中出血量为50~500 m L,平均350 m L;术后引流量为20~150 m L,平均80 m L。术后3 d切口VAS评分为1.5~4.7分,平均2.3分。术后切口均Ⅰ期愈合。53例均获随访,随访时间12~19个月,平均15个月。影像学复查示,骨折愈合时间3~9个月,平均6个月;31例出现植骨吸收现象;无断钉、断棒及螺钉松动等并发症发生。末次随访时,伤椎椎管通畅率较术前明显改善(t=27.395,P=0.000)。术后1周、1年和末次随访时,Cobb角及伤椎前、后缘相对高度均较术前明显改善(P0.05)。末次随访时,患者神经功能ASIA分级为A级1例、B级4例、C级7例、D级15例、E级26例,与术前比较差异有统计学意义(Z=—5.477,P=0.000)。结论微创通道下经椎板间隙开窗减压、椎体内植骨结合经皮椎弓根螺钉内固术,在椎管充分减压的同时,行伤椎终板撬拔复位、椎体内充分植骨,能有效维持术后伤椎椎体高度,降低术后内固定失败风险,减少手术创伤,是治疗Denis B型胸腰椎爆裂骨折的一种安全、有效微创术式。

关键词：胸腰椎爆裂骨折椎管减压经皮椎弓根螺钉内固定术