| Title |
Surface engineering with oxidized Ti3C2Tx MXene enables efficient and stable p-i-n-structured CsPbI3 perovskite solar cells |
| ID_Doc |
20041 |
| Authors |
Heo, JH; Zhang, F; Park, JK; Lee, HJ; Lee, DS; Heo, SJ; Luther, JM; Berry, JJ; Zhu, K; Im, SH |
| Title |
Surface engineering with oxidized Ti3C2Tx MXene enables efficient and stable p-i-n-structured CsPbI3 perovskite solar cells |
| Year |
2022 |
| Published |
Joule, 6.0, 7 |
| DOI |
10.1016/j.joule.2022.05.013 |
| Abstract |
All-inorganic CsPbI3 perovskite has a near-ideal band gap, high ther-mal stability, and simple material composition, thus presenting a promising option for developing perovskite/Si tandem solar cells. However, CsPbI3 undergoes a rapid phase transition under exposure to moisture and exhibits a significant performance gap relative to other perovskite compounds, particularly in the p-i-n structure favored for perovskite/Si tandems. Here, we demonstrate highly efficient and stable p-i-n-structured CsPbI3 perovskite solar cells by surface engineering the CsPbI3 layer with oxidized Ti3C2Tx MXene (OMXene) nanoplates via spray coatings. OMXene provides a phys-ical barrier against moisture and improves charge separation at the perovskite-electron transporting layer interface via an enhanced electric field. Consequently, we demonstrated CsPbI3/OMXene-based p-i-n devices with efficiencies of 19.69% for 0.096-cm2 cells and 14.64% for 25-cm2 minimodules. The encapsulated minimodule showed good stability, retaining -85% of the initial efficiency under simultaneous damp heat (85 degrees C/85% relative humidity) and 1-sun light soaking for over 1,000 h. |
| Author Keywords |
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| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000880642800001 |
| WoS Category |
Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary |
| Research Area |
Chemistry; Energy & Fuels; Materials Science |
| PDF |
https://www.osti.gov/biblio/1874461
|