EAPSI: Investigating the Performance of Perovskite Solar Cells Integrated with Graphene-Based Supercapacitors for Solar Energy Conversion and Storage

这项工作的目标是将下一代钙钛矿薄膜太阳能电池与基于固态石墨烯的超级电容器存储设备集成在一起。这项研究将与中国上海东华大学的王洪志博士合作进行。王吗?他在石墨烯材料方面的专业知识，特别是用于能量存储设备，将使PI在这个为期8周的项目中极大地发展这种特殊的太阳能电池。低成本，无处不在，环境可持续的太阳能电池与存储技术可以改变我们生活的世界。除了提供可持续的能源收集和存储设备之外，当前的项目还为具有社会意义的技术的研究和教育的整合提供了机会。如果PI将他在钙钛矿光伏方面的知识和背景与王氏集团在高结晶光还原氧化石墨烯超级电容器方面的知识和专业知识结合起来，那么集成器件将及时开发出来。这项工作将在东亚和太平洋暑期学院项目结束后继续进行，PI将通过他的论文项目优化光伏层，Wang团队将优化超级电容器层。钙钛矿光伏组件将使用简单的旋转涂层技术制造，随后将使用叶片涂层技术组装超级电容器层。在该装置中，在充电过程中，光子被钙钛矿活性层吸收，产生的激子解离产生自由电荷。电极之间功函数的差异驱动孔沿着钙钛矿的价带到达氧化铟锡阳极。同时，钙钛矿导带的电子向低功函数空穴输运层（在3.75 ~ 4.5 eV范围内）输运。到达电极后，电子和空穴都进一步转移到光还原的氧化石墨烯电极上，然后给超级电容器充电。该奖项隶属于东亚和太平洋暑期研究所项目，由美国国家科学基金会和中国科技部共同资助，支持美国研究生的暑期研究。

The objective of this work is to integrate next generation perovskite thin-film solar cells with solid-state graphene-based supercapacitor storage devices. This research will be conducted in collaboration with Dr. Hongzhi Wang at Donghua University in Shanghai, China. Wang?s expertise with graphene materials, specifically for energy storage devices, will allow the PI to evolve this particular solar cell enormously with this 8-week program. Low-cost, ubiquitous, environmentally sustainable solar cells with storage technology could transform the world in which we live. In addition to providing access to sustainable energy harvesting and storage devices, the current project provides opportunities for the integration of research and education in technologies of societal significance.If the PI combines his knowledge and background on perovskite photovoltaics, with the knowledge and expertise on highly crystalline photo-reduced graphene oxide supercapacitors from the Wang Group, then an integrated device will be developed in a timely manner. This work will continue after the East Asia and Pacific Summer Institutes program with the PI optimizing the photovoltaic layers through his thesis project, and the Wang group optimizing the supercapacitor layers. The perovskite photovoltaic component will be fabricated using simple spin-coating techniques, which will be followed by the assembly of the supercapacitor layers using blade-coating techniques. In this device, during the charging process, photons are absorbed by the perovskite active layer, and the generated excitons dissociate to produce free charges. The difference in the work function between the electrodes drives the holes along the valence band of the perovskite, to the indium-tin-oxide anode. Simultaneously, electrons from the conduction band of the perovskite are transported towards the low work function hole transport layer (which will be in the range of 3.75-4.5 eV). Upon reaching the electrodes, both electrons and holes are further transferred to the photo-reduced graphene oxide electrodes, which then charges the supercapacitor.This award under the East Asia and Pacific Summer Institutes program supports summer research by a U.S. graduate student and is jointly funded by NSF and the Ministry of Science and Technology of China.