期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 31, 页码 17330-17336出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b04490
关键词
perovskite solar cell; stability; hydrophobicity; passivation; encapsulation; degradation of perovskite
资金
- National Research Foundation of Korea [2013-R1A2A2A05-005344]
- Ministry of Science, ICT & Future Planning, Republic of Korea [2E25392] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, a novel and facile passivation process for a perovskite solar cell is reported. Poor stability in ambient atmosphere, which is the most critical demerit of a perovskite solar cell, is overcome by a simple passivation process using a hydrophobic polymer layer. Teflon, the hydrophobic polymer, is deposited on the top of a perovskite solar cell by a spin-coating method. With the hydrophobic passivation, the perovskite solar cell shows negligible degradation after a 30 day storage in ambient atmosphere. Suppressed degradation of the perovskite film is proved in various ways: X-ray diffraction, light absorption spectrum, and quartz crystal microbalance. This simple but effective passivation process suggests new kind of approach to enhance stability of perovskite solar cells to moisture.
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