Zhu Tao, Yang Yongrui, Yao Xiang, Huang Zixu, Liu Lei, Hu Wenping, Gong Xiong
Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of , Akron, Ohio 44325, United States.
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, School of Science, Tianjin University and Collaborative Innovation Centre of Chemical Science and Engineering, Tianjin 300072, P. R. China.
ACS Appl Mater Interfaces. 2020 Apr 1;12(13):15456-15463. doi: 10.1021/acsami.9b22891. Epub 2020 Mar 19.
In the past decade, perovskite solar cells (PSCs) were arising as a new generation of low-cost solar technology for renewable energy generation. More than 25% of power conversion efficiency (PCE) was reported from PSCs on the rigid indium tin oxide (ITO)/glass electrode. However, PSCs fabricated on flexible solution-processed transparent electrodes have still been a challenge to date. In this work, we report a solution-processed transparent polymeric thin film as the electrode for flexible solution-processed PSCs. The solution-processed polymeric thin film exhibits superior optical transparency and decent electrical conductivity. As compared with a PCE of 16.60% from PSCs on the ITO/glass substrate, PSCs on the solution-processed transparent polymeric electrode/glass substrate exhibit a PCE of 13.36% and PSCs on the solution-processed transparent polymeric thin-film/polyethylene terephthalate flexible substrate possess a PCE of 10.16%. Systematic studies demonstrate that poor electrical conductivity of the solution-processed transparent polymeric electrode and serious interfacial charge carrier recombination are responsible for low PCEs. Nevertheless, our results demonstrate that we provide a facile route to develop flexible PSCs by utilization of solution-processed polymeric thin films as the transparent electrodes.
在过去十年中，钙钛矿太阳能电池（PSCs）作为一种用于可再生能源发电的新一代低成本太阳能技术正在兴起。据报道，在刚性氧化铟锡（ITO）/玻璃电极上的PSCs的功率转换效率（PCE）超过25%。然而，迄今为止，在柔性溶液处理透明电极上制备PSCs仍然是一个挑战。在这项工作中，我们报道了一种溶液处理的透明聚合物薄膜作为柔性溶液处理PSCs的电极。该溶液处理的聚合物薄膜表现出优异的光学透明度和良好的导电性。与ITO/玻璃基板上的PSCs的PCE为16.60%相比，溶液处理的透明聚合物电极/玻璃基板上的PSCs的PCE为13.36%，而溶液处理的透明聚合物薄膜/聚对苯二甲酸乙二醇酯柔性基板上的PSCs的PCE为10.16%。系统研究表明，溶液处理的透明聚合物电极的导电性差和严重的界面电荷载流子复合是PCE较低的原因。尽管如此，我们的结果表明，我们通过利用溶液处理的聚合物薄膜作为透明电极提供了一条开发柔性PSCs的简便途径。
