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型薄膜太阳能电池与基于石墨烯的固态超级电容器存储设备集成在一起。这项研究将与上海东华大学的王洪志博士合作进行。王？S在石墨烯材料方面的专业知识，特别是用于储能设备的专业知识，将使PI通过这个为期8周的计划极大地发展这种特殊的太阳能电池。具有存储技术的低成本、无处不在、环境可持续的太阳能电池可能会改变我们生活的世界。除了提供获得可持续能源收集和存储设备的途径外，目前的项目还为具有社会意义的技术领域的研究和教育整合提供了机会。如果PI将他在钙钛矿型光伏领域的知识和背景与王氏集团关于高度结晶的光还原氧化石墨烯超级电容器的知识和专业知识相结合，那么集成设备将及时开发出来。这项工作将在东亚和太平洋夏季学院计划之后继续进行，PI将通过他的论文项目优化光伏电池层，Wang团队将优化超级电容器层。钙钛矿型光伏组件将使用简单的旋涂技术制造，随后将使用刀片涂层技术组装超级电容器层。在这种器件中，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将沿着钙钛矿价带的空穴驱动到铟-锡-氧化物阳极。同时，来自钙钛矿导带的电子被传输到低功函数的空穴传输层(3.75-4.5 eV)。到达电极后，电子和空穴进一步转移到光还原的石墨烯氧化物电极上，然后为超级电容器充电。东亚和太平洋夏季学院项目下的这个奖项支持一名美国研究生的夏季研究，由国家自然科学基金和中国的科技部联合资助。

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.