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钙钛矿太阳能电池的稳定性因素及封装提升性能

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物理学进展 2024年第1期44卷 19-48页

作者：戴加祺章东吴小山南京大学物理学院固体微结构物理国家重点实验室南京210093 南京大学南京大学声学研究所南京210093

钙钛矿太阳能电池作为第三代新概念太阳能电池,具有光电转换效率高、成本低和加工灵活等优点,近年来发展迅速,虽然其光电转换效率逐渐可与硅电池相媲美,已接近工业应用水平,但钙钛矿太阳能电池工业应用核心问题是其稳定性。如何使钙钛... 详细信息

钙钛矿太阳能电池作为第三代新概念太阳能电池,具有光电转换效率高、成本低和加工灵活等优点,近年来发展迅速,虽然其光电转换效率逐渐可与硅电池相媲美,已接近工业应用水平,但钙钛矿太阳能电池工业应用核心问题是其稳定性。如何使钙钛矿太阳能电池长期保持高效率是研究人员需要解决的最大问题。目前,封装作为解决钙钛矿太阳能电池外部稳定性问题的手段之一已经被广泛研究,良好的封装不仅可以解决器件的稳定性问题,还可以保证器件的安全性,延长使用寿命。本文简要介绍了影响钙钛矿太阳能电池稳定性的因素及稳定性测试的条件。最后介绍了钙钛矿太阳能电池的不同封装结构、封装工艺和封装材料对封装性能的影响。随着封装研究的不断深入,研究人员将不断优化和解决存在的问题,最终实现钙钛矿太阳能电池的大规模产业化应用。

关键词：钙钛矿太阳能电池设备稳定性封装材料工业化应用

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半隐式延迟解耦的开关动作高效处理方法

南方电网技术 2024年第7期18卷 46-54页

作者：吴小珊赵利刚苏寅生姚海成范昕冉直流输电技术全国重点实验室(南方电网科学研究院) 广州510663 中国南方电网电力调度控制中心广州510663 华北电力大学电气与电子工程学院北京102206

传统电磁暂态仿真采用详细模型建模电压源型换流器(voltage source converter,VSC)并采用双插值法(double interpolation method,DIM)处理步长内的开关事件,由于详细模型的导纳阵时变,DIM算法流程复杂,在进行大电网仿真时严重影响计算... 详细信息

传统电磁暂态仿真采用详细模型建模电压源型换流器(voltage source converter,VSC)并采用双插值法(double interpolation method,DIM)处理步长内的开关事件,由于详细模型的导纳阵时变,DIM算法流程复杂,在进行大电网仿真时严重影响计算效率。针对这一问题,应用半隐式延时解耦原理建模VSC,并对步长内开关事件的处理方法进行研究,通过对开关函数在步长内的占空比进行等值代替DIM,提高仿真效率。首先,从VSC状态方程出发,得到VSC解耦模型,实现换流器的并行计算,提高计算效率;其次,分析了不处理开关事件时累计误差的产生机理,并给出了计算时序和开关函数等值占空比的计算方法,保证仿真精度;最后,以PSCAD的仿真波形为基准,验证了所提方法的精度和有效性,讨论了所提方法的方法特点。

关键词：电压源型换流器半隐式延时解耦电磁暂态仿真开关动作处理并行计算

Photo-degradation organic dyes by Sb-based organic-inorganic hybrid ferroelectrics

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Journal of Environmental Sciences 2021年第3期33卷 145-155页

作者： Yuying wu Zhangran Gao Xiaofan Sun Hongling Cai xiaoshan wu Collaborative Innovation Center of Advanced Microstructures Laboratory of Solid State Microstructures and School of PhysicsNanjing UniversityNanjing 210093China

The organic-inorganic hybrid halide compounds have emerged as one of the most promising photoelectric material for their superior optoelectronic properties and hold great prospects for renewable energy substitutes and environmental protection as ***,we report the optical properties of the Sb-based organic-inorganic hybrid ferroelectric materials:pyridine-4-aminium tetrachloroantimonate((C_(5)H_(7)N_(2))SbCl_(4),sample 1),piperidin-1-aminium tetrachloroantimonate((C_(5)H_(13)N_(2))SbCl_(4),sample 2)and tris(trimethylammonium)nonachlorodiantimonate(((CH_(3))_(3)NH)_(3)Sb_(2)Cl_(9),sample 3),which are a kind of exploited efficient *** 2 and 3 exhibit distinct photoelectric respond,which are mainly ascribed to their minor narrow band-gap compared with sample *** the ferroelectrics,the intrinsic of spontaneous polarization of sample 3 at room temperature is favourable for the separation of photogenerated electrons and holes within the photorespond ***,sample 3 shows the highest efficiency of photo-decomposed Rhodamine B(90.2%within 80 min)and Methyl Orange(MO)(97.4%within 50 min),thanks to the photo-excited electrons and holes promoting the formation of oxidative radical species during the photo-redox *** findings prove that the development of a novel Sbbased organic-inorganic hybrid halide compounds with good stability in the degradation of organic dyes paves a way to designing new photocatalyst.

关键词： Organic-inorganic hybrid halide compounds Photoelectric Photogenerated electrons and holes Photo-degradation

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电驱动系统带载工况下电磁干扰试验

重庆理工大学学报（自然科学） 2024年第8期38卷 55-63页

作者：吴小珊石晓辉李旭贾晋张文强重庆大学机械与运载工程学院重庆400044 重庆理工大学车辆工程学院重庆400054 重庆清研理工电子技术有限公司重庆401329

利用自主研发的电磁兼容试验系统进行了基于带载工况的EMI试验,研究了电驱动系统在多工况下的EMI特性。首先进行了高低压上电传导发射试验研究,发现高压上电对低压系统形成严重耦合干扰;其次进行不同工况下辐射发射和高压传导发射的试... 详细信息

利用自主研发的电磁兼容试验系统进行了基于带载工况的EMI试验,研究了电驱动系统在多工况下的EMI特性。首先进行了高低压上电传导发射试验研究,发现高压上电对低压系统形成严重耦合干扰;其次进行不同工况下辐射发射和高压传导发射的试验研究,发现带载的辐射发射和高压传导发射EMI明显高于空载,且随着转速的升高电磁干扰值逐渐增大。结合试验研究,对某款电驱动系统在带载状况下高压传导电磁干扰仿真建模,并通过带载EMI试验进行了验证,结果表明在9 kHz~30 MHz频段范围内,电驱动系统各带载工况下的传导发射仿真与测试频谱具有较好的一致性,谐振点误差不超过6 dB,验证了带载仿真模型的准确性。

关键词：电驱动系统电磁干扰带载工况试验研究

Frequency Control at the Power Sending Side for HVDC Asynchronous Interconnections Between Yunnan Power Grid and the Rest of CSG

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CSEE Journal of Power and Energy Systems 2021年第1期7卷 105-113页

作者： Hong Rao Wei wu Tian Mao Baorong Zhou Chao Hong Yongjun Liu xiaoshan wu the Electric Power Research Institute of China Southern Power Grid(SEPRI CSG)Guangzhou 510080China

For a large-scale high voltage direct current (HVDC)asynchronous interconnected power grid, the frequency issue atthe power sending side under DC faults is a crucial *** solve this problem, based on rotor motion equations, theeffect of unbalanced power on the system frequency under DCfaults is analyzed. The characteristics and dynamic developmentprocess of frequencies after the injection of disturbances areanalyzed. In addition, the actions and coordinated strategies ofvarious frequency control measures are also investigated. Basedon the testing projects of an asynchronous interconnection in theChina Southern Power Grid (CSG), the frequency features arestudied according to the measured PMU data. The outcome showsthat the frequency problem of the Yunnan Power Grid after anasynchronous interconnection can be solved and controlled. Italso shows that the frequency limit control (FLC) is importantfor the frequency regulation of large scale HVDC asynchronousinterconnected DC power grids. As demonstrated, DC FLC caneffectively suppress the deviation of the transient ***, reasonable frequency regulation parameters shouldbe set and other area frequency control measures should becoordinated to maintain the frequency stability of the system.

关键词： Asynchronous interconnected power grid DC overload capacity DC frequency limit control frequency stability PMU data

Comparison between Top and Bottom NiO-pinning Spin Valves: Effect of Interfacial Roughness on Specular Reflection

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Journal of Materials Science & Technology 2006年第3期22卷 397-400页

作者： Liang SUN Jun DU xiaoshan wu Shiming ZHOU Xixiang ZHANG An HU National Laboratory of Solid State Microstructures Department of Physics Nanjing University Nanjing 210093 China State Key Laboratory for Surface Physics Fudan University Shanghai 200433 China Department of Physics Hong Kong University of Science ＆ Technology Kowloon Hong Kong China

Top and bottom NiO-pinning spin valves of Si/Ta/NiO/Co/Cu/Co/Ta and Si/Ta/Co/Cu/Co/NiO/Ta were prepared by magnetron sputtering, and X-ray diffraction and giant magnetoresistance （GMR） ratio were measured in the temperature range from 5 to 300 K. For the bottom spin valve, the interracial roughness at NiO/Co is much smaller than that of Co/NiO in the top one. The Co/Cu and Cu/Co interfaces have the same roughness in the bottom and the top spin valves. NiO, Co, and Cu layers have （111） preferred orientations in the top one and random orientations in the bottom one. The GMR ratio of the bottom spin valve is larger than that of the top one at all temperatures and their difference increases with decreasing temperature.

关键词： Spin valve Specular reflection Interfacial roughness

Effects of ferrites on magnetic transport properties in La_(2/3)Sr_(1/3)MnO_3/ferrites composites

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Acta Metallurgica Sinica(English Letters) 2009年第1期22卷 51-57页

作者： Zhengyou ZHOU xiaoshan wu Jun DU Sheng XU Xiaojun BAI Guangsheng LUO Fengyi JIANG School of Materials Science and Engineering Nanchang University Nanchang 330031 China Nan.ling National Laboratory Department of Physics Nanjing University Nanjing 210093 China

Effects of soft-magnetic MnZn ferrite （Mn0.5Zn0.5Fe2O4, MZF） and hard-magnetic Ba ferrite （BaO.6Fe2O3, BaM） on the structure and magnetic transport properties of [La2/3Srl/3MnO3] （LSMO）/（x） [ferrites] （ferrites=MZF, BaM） composites have been investigated. It was found that the inclusion of MZF phase reduces magnetization and ferromagnetic-paramagnetic transition temperature （To） of the composites. With increasing the content of the dopants, the high-temperature magnetoresistance （MR） decreases, whereas low-temperature MR increases and reaches 42% at 150 K and x=0.1. However, for the LSMO/BaM composites, magnetization and ferromagneticparamagnetic transition temperature （To） decrease firstly as x〈5%, and then increase as x〉5%. The resistivity of the composites increases by five orders of magnitude at x=1% and is out of measured range at x=5%. High magnetic field has little effect on the resistivity and magnetoresistance originate from the pinning effect of BaM for the composites with x〉5%, which may grains.

关键词： Composites Magnetoresistance Spin-dependent scattering and tunneling effect

薪火“翎阳”在行动——五社联动助力城中村困境群体兜底服务

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社会与公益 2024年第3期 74-77页

作者：谭进吴晓姗黄家杰许鹏晨深圳市宝安区旭源社会工作服务中心

一、背景介绍CW社区位于SZ市HC街道办事处北部,总面积0.5平方公里。社区居民于新中国成立前迁入本地,主要为基围人。有户籍居民400人,暂住人口约16000人,户籍人口中,人口老龄化趋势明显,非户籍人口中的困境群体普遍经济状况及生活环境... 详细信息

一、背景介绍CW社区位于SZ市HC街道办事处北部,总面积0.5平方公里。社区居民于新中国成立前迁入本地,主要为基围人。有户籍居民400人,暂住人口约16000人,户籍人口中,人口老龄化趋势明显,非户籍人口中的困境群体普遍经济状况及生活环境欠佳。居民原子化、需求多样化,资源碎片化等问题是CW城中村困境群体兜底服务的现实难题。为破解这一难题,CW社区党群服务中心探索新时代背景下社区治理的实践路径,认真践行五社联动模式,提升CW社区的兜底服务能力。

关键词：需求多样化实践路径户籍人口街道办事处联动模式原子化服务中心城中村

Modeling drug-induced liver injury and screening for anti-hepatofibrotic compounds using human PSC-derived organoids

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Cell Regeneration 2023年第1期12卷 338-350页

作者： xiaoshan wu Dacheng Jiang Yi Yang Shuang Li Qiurong Ding School of Biotechnology East China University of Science and TechnologyShanghai 200237P.R.China CAS Key Laboratory of Nutrition Metabolism and Food SafetyShanghai Institute of Nutrition and HealthShanghai Institutes for Biological SciencesUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200031P.R.China School of Pharmacy Fujian Health CollegeFujian 350101P.R.China Shanghai Jiao Tong University Affiliated Sixth People’s Hospital Shanghai 200233China Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101P.R.China

Preclinical models that can accurately predict the toxicity and efficacy of candidate drugs to human liver tissue are in urgent *** liver organoid(HLO)derived from human pluripotent stem cells offers a possible ***,we generated HLOs,and demonstrated the utility of these HLOs in modeling a diversity of phenotypes associated with drug-induced liver injury(DILI),including steatosis,fibrosis,and immune *** changes in HLOs after treatment with tool compounds such as acetaminophen,fialuridine,methotrexate,or TAK-875 showed high concordance with human clinical data in drug safety ***,HLOs were able to model liver fibrogenesis induced by TGFβ or LPS *** further devised a high-content analysis system,and established a high-throughput anti-fibrosis drug screening system using ***208 and Imatinib were identified that can significantly suppress fibrogenesis induced by TGFβ,LPS,or *** together,our studies demonstrated the potential applications of HLOs in drug safety testing and anti-fibrotic drug screening.

关键词： Human liver organoid Pluripotent stem cell Drug-induced liver injury Anti-fibrotic compounds High-content analysis