Abstract
The environmental instability of perovskite solar cells caused by the ultraviolet photocatalytic effect of metal oxide layers is a critical issue that must be solved. In this paper, we report improved environmental stability of ZnO film-based planar heterojunction perovskite solar cells, by suppressing photocatalytic activities induced by the ZnO electron transfer layer. The photovoltaic performance and stability in an ambient environment under continuous illumination are effectively improved by applying an aluminum oxide interlayer on the ZnO film to suppress the photocatalytic degradation of perovskites. The highest efficiency of solar cells has increased from 14.62% to 17.17%, and after 250 h of continuous exposure under full spectrum simulated sunlight in air, the efficiency remains as high as 15.03%. The results suggest that effective suppression of photocatalytic degradation of perovskites with a modified electron transfer layer is a new solution to improve the long-term environmental stability of perovskite solar cells.
| Original language | English |
|---|---|
| Pages (from-to) | 17368-17378 |
| Number of pages | 11 |
| Journal | Journal of Materials Chemistry A |
| Volume | 5 |
| Issue number | 33 |
| DOIs | |
| State | Published - 2017 |
Bibliographical note
Publisher Copyright:© 2017 The Royal Society of Chemistry.
Funding
This work was supported by the National Natural Science Foundation of China under Grant Nos. 61421002, 61574029, and 61371046. This work was also partially supported by the University of Kentucky. The manuscript was written through contributions of all authors. All authors have given approval to the nal version of the manuscript. The authors declare no competing nancial interests.
| Funders | Funder number |
|---|---|
| University of Kentucky | |
| National Natural Science Foundation of China (NSFC) | 61574029, 61371046, 61421002 |
ASJC Scopus subject areas
- General Chemistry
- Renewable Energy, Sustainability and the Environment
- General Materials Science
