Enhancing Stability of Perovskite Solar Cells to Moisture by the Facile Hydrophobic Passivation
- Enhancing Stability of Perovskite Solar Cells to Moisture by the Facile Hydrophobic Passivation
- 황인성; 정인영; 이진우; 고민재; 용기중
- perovskite solar cell; stability; hydrophobicity; passivation; encapsulation; degradation of perovskite
- Issue Date
- ACS Applied Materials & Interfaces
- VOL 7, NO 31, 17330-17336
- 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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