期刊
SOLID STATE COMMUNICATIONS
卷 271, 期 -, 页码 71-75出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2017.12.022
关键词
Carbon counter electrode; Mesoscopic perovskite solar cells; Polystyrene sphere; Microporous structure
资金
- National Science Foundation of China [51202112, 51402150]
- Fundamental Research Funds for the Central Universities [NS2017039]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
The permeability of the carbon counter electrode (CCE) is critical to the HTM-free fully printable perovskite solar cells. In this work, we report a CCE assisted by polystyrene spheres (PS-spheres) as pore-forming agent to gain microporous structure for a better permeability. Due to its decomposition temperature at 400 degrees C, the porous structure is obtained in the carbon layer easily. By optimization towards the contents of PS-spheres in CCE, the filling rate of perovskite solution and the photovoltaic performance of the device have been significantly improved. Using this method, an average efficiency enhancement of 22% has been obtained for HTM-free fully printable perovskite solar cells, resulting in a better fill rate of CH3NH3PbI3 and an efficiency of 4.49%. This kind of CCE with the advantages of simple, easy preparation process and well performance, show excellent potential application in perovskite solar cells.
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