期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 36, 页码 30607-30613出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b10332
关键词
high efficiency; stability; interface engineering; dopamine; perovskite solar cells
资金
- National Basic Research Program of China
- Fundamental Studies of Perovskite Solar Cells [2015CB932200]
- Natural Science Foundation of China [51602149, 61705102, 91733302]
- Natural Science Foundation of Jiangsu Province, China [BK20161011, BK20160412, BK20161010]
- Young 1000 Talents Global Recruitment Program of China
- Jiangsu Specially-Appointed Professor program
- Six talent peaks Project in Jiangsu Province, China
- Startup from Nanjing Tech University
Interfacial engineering is a simple and effective strategy that can improve the photovoltaic performance in organic inorganic perovskite solar cells (PSCs). Herein, a dopamine (DA) self-assembled monolayer (SAM) was introduced on the top of the SnO2 electron transporting layer (ETL) to modify the SnO2/perovskite interface. The processing temperature of the present devices is around 150 degrees C, and the power conversion efficiency of the PSCs was significantly improved to 16.65% compared to that of the device without modification (14.05%). Such enhancement in efficiency is mainly attributed to the improved quality of perovskite films by improving the affinity of the SnO2 ETL, thus leading to better carrier transport and low charge recombination at the SnO2/perovskite interface. Moreover, the modified device by the DA SAM exhibited enhanced stability compared to the device without modification. Our results suggest that the introduction of the DA SAM on the ETL/perovskite interface is a promising method for highly efficient and stable PSCs.
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