Abstract
Formamidinium cesium (FACs) perovskites solar cells have been shown to be among the most stable metal halide perovskites. Here, high-temperature data are presented which systematically and statistically demonstrate the high thermal operation of this system to temperatures in excess of 200 degrees C. Device measurements between 250 K and 490 K show that while some loss of performance is evident at higher temperature, this is driven by reversible halide segregation with no evidence of a structural phase transition over the measurement range probed. Moreover, upon reduction of the temperature back to ambient the power conversion efficiency is retained.
| Original language | American English |
|---|---|
| Pages (from-to) | 2408-2413 |
| Number of pages | 6 |
| Journal | ACS Energy Letters |
| Volume | 8 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2023 |
NREL Publication Number
- NREL/JA-5900-83884
Keywords
- conversion efficiency
- metal halides
- perovskite