Defect Detection of Solar Cells Based on Electroluminescence Imaging

为了检测太阳能电池存在的缺陷,给太阳能电池施加一定的正向偏压,利用CCd相机在暗室中探测电池的发光。探测分别在3种状态下进行:无滤光探测、过滤800 nM以下波长后探测和过滤800 nM以上波长后探测。研究发现:只有在过滤800 nM以下波长的镜片下探测效果最好,表明电池主要发红外光,其波长范围为850~1 200 nM。控制光探测器的探测时间,发现不同探测时间下电池的发光强度不同,探测时间相同但偏压不同则光强也不同。该方法可以检测出正向偏压下电池存在的各种缺陷类型。在反向电压下,薄膜电池会出现小光点,这表示缺陷区域和密度,研究证明薄膜电池也能发红外光且薄膜中存在区域缺陷。对低功率的电池片进行光探测发现,电池存在严重缺陷。上述结果表明,红外光探测可以直观、快速、方便地检测太阳能电池存在的缺陷。In order to detect the hidden defects of the solar cells,the eletroluminescence image was obtained by applying a certain forward bias voltage to solar cell in the darkroom using the light sensor CCD camera.The experiments were carried out at three states: without optical filter,filtering the wavelength less than 800 nm,and filtering the wavelength greater than 800 nm.It is found that the detection effect is the best only under the lens of filtration of less than 800 nm wavelength.It proves that the cell mainly emits infrared light of 850 ～ 1 200 nm.By controlling the detecting time,it is found that the light intensity is varied with the detection time,and also varied with the forward bias voltage in the same detection time.This method can detect all kinds of hidden defect type of the solar cells.Under the reverse voltage,thin film cell appears small spots which show defect area and density,and the studies prove that thin film cell also can send infrared light and the defects exist in the cell.In detecting low power cell,it is found that there are serious defects in the cell.The results show that infrared detection has rapid and convenient intuitive features for solar cells defect detection.福建省教育厅科研项目(985)资助项

实验室建设与运行管理的探索与实践

文章阐述了高校实验室建设在\"双一流\"建设中的重要支撑作用。结合厦门大学化学化工学院物理化学实验室建设和管理的探索与实践,从物理化学实验室建设特点出发,探讨了如何统筹管理、规划、设计、整合、优化实验室布局结构等,并分享了实验室装修、改造过程中的思路和举措。建一流实验室促进实验教学的长远发展,充分发挥物理化学实验室在培养一流人才中的作用,以期推动\"双一流\"工程良好快速发展。2017年厦门大学教学改革研究项目(JG20170222);;\n国家基础科学人才培养基金项目(J1310024);;\n2016年度教育部“基础学科拔尖学生培养试验计划”研究课题资

Application of Na-Doped Mo Electrodes on Copper Indium Gallium Diselenide(CIGS) Thin-Film Solar Cells

适量钠元素对铜铟镓硒薄膜生长具有促进作用,本文主要研究了掺钠钼电极特性及其对铜铟镓硒薄膜太阳能电池性能的影响。利用磁控溅射方法制备不同厚度的钼钠/钼(MO nA/MO)薄膜作为背电极,并在(MO nA/MO)薄膜电极上蒸镀铜铟镓硒(CIgS)薄膜,并利用单质硒源硒化处理后制备CIgS薄膜电池。SEM和Xrd结果表明采用三层叠层MO/MO/MO nA薄膜做电极的MO nA容易被氧化,电阻率增加,采用四层叠层MO/MO/MO nA/MO薄膜电极方式有效降低电阻率,阻止MO nA被氧化,CIgS晶粒较大且致密。在同一条件下,在不同MO nA/MO厚度电极上制备CIgS薄膜电池,80 nM MO nA厚度上的CIgS薄膜电池效率达6.54%。An appropriate concentration of Na element is able to promote the growth of Copper Indium Gallium Diselenide(CIGS) thin films.This paper is mainly focused on the study of characteristics of Na-doped Mo electrodes and their effect on the performance of CIGS thin-film solar cells.In this work, the thin-film CIGS solar cells were fabricated as follows:(i) different thicknesses of Mo Na/Mo thin films prepared by magnetron sputtering were used as back electrodes;(ii) CIGS thin films were evaporated on the top of Mo Na/Mo electrodes;(iii) the CIGS thin films were post-processed by selenation process using an elemental Se source and later CIGS solar cells were finally made.The results of SEM and XRD reveal that, for the solar cells using three layers of Mo/Mo/Mo Na thin films as an electrode, Mo Na is easily oxidized and the resistivity of electrode increases, while, for the solar cells using four layers of Mo/Mo/Mo Na/Mo thin films as an electrode, the resistivity of electrode can be effectively reduced, Mo Na can be prevented from being oxidized and the CIGS grains are large and dense.Under the same experimental conditions, for the CIGS solar cells with different thicknesses of Mo Na/Mo thin films as electrodes, the CIGS solar cell using Mo Na with a thickness of 80 nm as an electrode has the highest conversion efficiency of 6.54%国家985资助项目(No.1270K51001

基于空间计量的酒店价格空间分异及其影响因子研究——以厦门岛为例

酒店价格差别的产生具有多层次的原因,酒店的空间分布也呈现较强的非均衡性。试图在传统分析方法的基础上纳入空间因素,建立以厦门岛酒店价格为研究对象的空间计量模型,探索厦门岛酒店价格空间分异的特征及其形成的机制。结果研究发现:(1)厦门岛酒店价格存在于以中山路、大学路、会展、五缘湾及白鹭洲为中心形成的5大高价区,以及火车站、曾厝垵、中部片区、高崎为中心形成的4大低价区,同时呈现出显著的空间自相关性;(2)实证分析同时发现厦门岛酒店价格受客房面积、酒店服务、酒店类型、景点指数、酒店评分5个变量的综合影响,并在不同的区域间存在差异性;(3)通过将酒店服务和客房面积作为局部回归因子,GWR模型揭示了两者的空间非平稳性,在厦门岛不同区域表现出不同的特征。研究意义在于增加了传统酒店价格模型的解释力度,针对酒店价格管理进行了政策建议分析,同时对于酒店价格空间特征形成机制的分析适用于其他旅游区的研究。国家自然科学基金面上项目“基于行为分析的景区人流模拟与空间优化——GPS与问卷结合的研究”(编号41671141);;\n福建省自然科学基金项目“游客景点选择行为导向的景区服务设施布局方法——以鼓浪屿为例”(编号2015J01226);;\n厦门大学中央高校基本科研业务费资助项目“地图空间—认知空间—行为空间的作用机理及景区优化方法”(编号20720170046);;\n厦门市科技局项目“面向三维环境和大数据的旅游心理容量测算方法与规划设计平台”(编号3502Z20183005

InFluence of Laser Irradiation on Serum Albumen of Castor Silkworm

我们采用不同波长的激光照射蓖麻蚕蚕卵，使它产生半致死效应，经孵化后的幼虫在五龄期取血分析它的血清蛋白谱，证实了激光照射对蓖麻蚕的遗传性状具有诱变作用，其机理涉及到激光照射与基因表达及调控的关系。Eggs of castor silkworm are irradiated with diFFerent wavelengths of laser and they are made to produce the semilethal eFFect.AFter incubation, taking some blood From larva at the age of Five, the spectra of its serum albumen is analysed.It has been conFirmed that laser irradiation has a mutagenesis on heredity of castor silkworm.the mechanism involved with the relation of laser irradiation with gene expression, as adjuustion and control.福建省自然科学基

小剂量K562 细胞NOD/SCID 小鼠动物模型的建立

【目的】探索建立小剂量( 1×106) 人急性红白血病K562 细胞株的NOD/SCID 小鼠动物模型及通过 流式细胞仪对NOD/SCID 小鼠的肿瘤负荷情况进行评价的可行性。【方法】实验组NOD/SCID 小鼠分别经尾静 脉接种K562 细胞1×106、5×106, 比较不同剂量接种实验组小鼠的生存时间、组织病理改变及通过流式细胞术 对NOD/SCID 小鼠体内的肿瘤标记进行检测。【结果】1×106 及5×106 K562 细胞接种的NOD/SCID 小鼠的生存 时间分别为( 30.3±4.3) d 和(22.2±3.7)d; 其外周血、骨髓及肝、肺组织匀浆中均可发现不同比例的肿瘤细胞; 通 过流式细胞术检测5×106 K562 细胞接种组NOD/SCID 小鼠外周血、肝匀浆中人CD13 表达水平显著高于1× 106 接种组, 而肺匀浆的CD13 表达水平两组无显著性差异。【结论】小剂量( 1×106) K562 细胞NOD/SCID 小 鼠动物模型的建立是完全可行的,这有助于降低实验成本

Some Effects of Co on the Electrochromic Properties of NiO xH y Film

本文利用阴极化电沉积法在抛光镍板及ＩＴＯ玻璃表面制备了含Ｃｏ量为１６．２％的ＮｉＯｘＨｙ薄膜，薄膜厚度分别为４２ｎｍ、２１ｎｍ，采用透射光谱以及线性电位扫描、交流阻抗和阳极稳态极化曲线等测试技术，考察了Ｃｏ对ＮｉＯｘＨｙ薄膜电致变色性能的影响，光谱测试范围为３００～２５００ｎｍ．结果发现：Ｃｏ能降低薄膜着色态在可见光区及部分近红外区的透过率，通过电压调节不仅可以调光而且可望能够控温；同时Ｃｏ还能降低ＮｉＯｘＨｙ薄膜电致变色电位，升高薄膜氧化着色过程中的氧析出过电位，对薄膜的电致变色性能有改进作用，但降低了着色过程中质子的扩散系数．Some effects of Co addition upon the electrochromic characteristics of a nic_kel hydroxide film were studied. The films were electrodeposited on both polished Ni plate and conductive ITO glass. The electrochemical behaviors were investigated using the film on Ni plate by linear potential sweep, a.c. impedance, and anodic polarization curves for OER(oxygen evolution reaction). It was found that Co can lower the working voltage and raise the oxygen overpotential, but has little effect on the reaction kinetics. It was also found that the Co can improve the optical properties of the electrochromic film.作者联系地址：南开大学新能源材料化学研究所Author's Address: Inst. of New Energy Material Chem. Nankai Univ., Tianjin 30007

分子对接预测H5亚型禽流感病毒的广谱中和表位

H5N1禽流感病毒已经在亚洲、欧洲和非洲广泛传播,造成了巨大损失.最近我们鉴定出一株对多种来源的H5N1代表株均有良好中和活性的、识别H5亚型血凝素(hemagglutinin,HA)的广谱单克隆抗体8H5,它对寻找克服禽流感高变性的广谱治疗性抗体、疫苗和药物具有重要价值.本研究应用分子模拟技术,采用"典范结构"方法对8H5抗体Fab片段进行结构模建,并通过能量分析、SAS值分析、"拉曼强传图"检验、profile-3D分析等理论验证,获得较为合理的8H5Fab的三维空间结构.8H5Fab与3种HA蛋白晶体结构的分子对接结果表明,8H5抗体与HA蛋白的作用模式与HA宿主来源无关,但与HA结构的亚型相似性相关.综合抗原同源比对结果,推测8H5抗体识别的广谱中和表位是由HA上的Asp68,Asn72,Glu112,Lys113,Ile114,Pro118,Ser120,Tyr137,Tyr252不连续氨基酸残基组成的构象表位.这一模型将为H5亚型禽流感病毒广谱疫苗和治疗性药物的分子设计提供依据