A Low-Cost and High-Efficiency Integrated Device toward Solar-Driven Water Splitting
- Jia LiangJia LiangDepartment of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesSmalley-Curl Institute, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesMore by Jia Liang,
- Xiao HanXiao HanDepartment of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesSchool of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, ChinaMore by Xiao Han,
- Yunxiu QiuYunxiu QiuDepartment of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesMore by Yunxiu Qiu,
- Qiyi FangQiyi FangDepartment of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesMore by Qiyi Fang,
- Boyu ZhangBoyu ZhangDepartment of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesMore by Boyu Zhang,
- Weipeng WangWeipeng WangDepartment of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesMore by Weipeng Wang,
- Jing ZhangJing ZhangDepartment of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesMore by Jing Zhang,
- Pulickel M. AjayanPulickel M. AjayanDepartment of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesSmalley-Curl Institute, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesMore by Pulickel M. Ajayan, and
- Jun Lou*Jun Lou*Email: [email protected]Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesSmalley-Curl Institute, Rice University, 6100 Main Street, Houston, Texas 77005, United StatesMore by Jun Lou
Abstract
Achieving the spontaneous evolution of fuel from integrated devices by solar-driven water splitting is an attractive method for renewable energy conversion. However, their widespread implementation is hindered by their immature architectures and inferior performances. Here, we propose a real integrated device consisting of two series-connected perovskite solar cells (PSCs) and two CoP catalyst electrodes, which can be immersed into the aqueous solution directly for solar-driven water splitting. Benefiting from the low-cost and facile encapsulation technique, this integrated device possesses a compact structure and well-connected circuits for the process of charge carriers generation, transfer, and storage. Moreover, although all expensive components in this integrated device are eliminated, the two series-connected carbon-based PSCs still exhibit a high solar-to-electric efficiency of 10.6% as well as the integrated devices display a solar-to-hydrogen efficiency of as high as 6.7%. This integrated device serves as a model architecture toward future development and optimization of the integrated device that can be immersed into the aqueous solution directly for water splitting.
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