Enhancing Stability of Perovskite Solar Cells to Moisture by the Facile Hydrophobic Passivation

Title
Enhancing Stability of Perovskite Solar Cells to Moisture by the Facile Hydrophobic Passivation
Authors
황인성정인영이진우고민재용기중
Keywords
perovskite solar cell; stability; hydrophobicity; passivation; encapsulation; degradation of perovskite
Issue Date
2015-08
Publisher
ACS Applied Materials & Interfaces
Citation
VOL 7, NO 31, 17330-17336
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/50131
ISSN
19448244
Appears in Collections:
KIST Publication > Article
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