银合金基透明导电薄膜及其在高效聚合物太阳能电池中的应用

发布时间：2018-06-15 13:36

本文选题：钙钛矿太阳能电池 + 聚合物太阳能电池　；参考：《华东师范大学》2017年硕士论文

【摘要】：研究了三种银合金基夹层结构透明导电薄膜的光电性能以及银钛合金夹层结构透明导电薄膜(GATG)的耐热性能及其在聚合物太阳能电池(OSCs)中的应用。研究以四氟化碳等离子体修饰PEDOT:PSS为空穴传输层的钙钛矿太阳能电池(PSCs);探索基于氧化锌电子传输层的反型PSCs电池工艺。具体内容如下:1.研究了银铝、银铬、银钛三种银合金夹层结构透明导电薄膜(即GZO/Ag合金/GZO)的光电性能。GZO/AgTi/GZO(GATG)薄膜的光透过率和方块电阻分别达到86%和5Ω/sq,表现最优。此外,GATG具有耐高温的特性,其耐高温的原因是:在银沉积的过程中,钛原子形成了钛氧化物包裹在银颗粒表面,抑制银原子受热的迁移团聚,提高银合金层的热稳定性。2.研究了基于GATG的氧化锌反型OSCs电池性能,电池功率转换效率达到9.2%。在相对湿度69%,紫外光照射20分钟以后,基于GATG的OSCs器件保持着原始效率的59%,而基于铟锡氧化物透明电极(ITO)的OSCs电池只有原始效率的23%。导致电池退化的原因是氧化锌具有光催化效应,加速电子层和活性层界面的退化,使得器件开路电压等性能的明显下降,而采用GATG电极的电池,GATG导电薄膜阻挡紫外光到达活性层,抑制了 ZnO的光催化效果,使得电池紫外耐受性能得到明显提升。3.利用四氟化碳等离子体处理修饰的PEDOT:PSS作为空穴传输层,采用两步法制作钙钛矿太阳能电池,研究电池的光伏性能。研究表明,等离子体处理PEDOT:PSS表面后,电池的电流迟滞现象严重,说明电流迟滞与界面密切相关。用溶胶凝胶法和磁控溅射镀膜法制备了氧化锌薄膜,分别采用两步法和乙醚浸泡法制备了 PSCs。研究发现,氧化锌电子传输层具有良好电子传输能力,但在退火中更易促进活性层退化,导致电池性能快速衰退。
[Abstract]:The optical and electrical properties of three kinds of transparent conductive thin films with interlayer structure based on silver alloy, the heat resistance of transparent conductive thin films with silver and titanium interlayer structure and their applications in polymer solar cells (OSCs) were studied. A perovskite solar cell with PEDOT: PSS as the hole transport layer modified by carbon tetrafluoride plasma was studied, and the technology of inverse PSCs based on zinc oxide electron transport layer was explored. The details are as follows: 1. The optoelectronic properties of transparent conductive thin films (i.e. GZO / Ag / GZO / GZO / GZO / GZO / GZO / GZO / GZO / GZO / GZO / GZO / GZO / GZO / GZO / GZO) thin films with interlayer structure of silver aluminum, silver chromium and silver titanium have been studied. In addition, GATG has the characteristics of high temperature resistance. The reason of its high temperature resistance is that titanium atoms form titanium oxide to wrap on the surface of silver particles during silver deposition, which can inhibit the migration and agglomeration of silver atoms and improve the thermal stability of silver alloy layer. The performance of zinc oxide reverse OSCs battery based on GATG was studied. After 20 minutes of ultraviolet irradiation, the original efficiency of the OSCs based on GATG is 59, while that of the OSCs based on ITO (indium tin oxide transparent electrode) is only 23% of the original efficiency. The degradation of the battery is due to the photocatalytic effect of zinc oxide, which accelerates the degradation of the interface between the electronic layer and the active layer, resulting in a significant decrease in the performance of the device, such as open circuit voltage. The photocatalytic effect of ZnO was inhibited by the barrier of ultraviolet light to the active layer by using the GATG electrode, and the UV tolerance of the cell was improved significantly. 3. The photovoltaic properties of perovskite solar cells were studied by using PEDOT: PSS modified by carbon tetrafluoride plasma as the hole transport layer and a two-step method was used to fabricate perovskite solar cells. The results show that the current hysteresis of the cell is serious after the plasma treatment of PEDOT: PSS surface, indicating that the current hysteresis is closely related to the interface. Zinc oxide thin films were prepared by sol-gel method and magnetron sputtering deposition method. PSCs were prepared by two-step method and ether immersion method respectively. It is found that the zinc oxide electron transport layer has good electron transport ability, but it is easier to promote the degradation of the active layer during annealing, which leads to the rapid degradation of the battery performance.
【学位授予单位】：华东师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM914.4

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