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Hole‐Boosted Cu(Cr,M)O2 Nanocrystals for All‐Inorganic CsPbBr3 Perovskite Solar Cells.
- Source :
-
Angewandte Chemie . 11/4/2019, Vol. 131 Issue 45, p16293-16297. 5p. - Publication Year :
- 2019
-
Abstract
- The all‐inorganic CsPbBr3 perovskite solar cell (PSC) is a promising solution to balance the high efficiency and poor stability of state‐of‐the‐art organic–inorganic PSCs. Setting inorganic hole‐transporting layers at the perovskite/electrode interface decreases charge carrier recombination without sacrificing superiority in air. Now, M‐substituted, p‐type inorganic Cu(Cr,M)O2 (M=Ba2+, Ca2+, or Ni2+) nanocrystals with enhanced hole‐transporting characteristics by increasing interstitial oxygen effectively extract holes from perovskite. The all‐inorganic CsPbBr3 PSC with a device structure of FTO/c‐TiO2/m‐TiO2/CsPbBr3/Cu(Cr,M)O2/carbon achieves an efficiency up to 10.18 % and it increases to 10.79 % by doping Sm3+ ions into perovskite halide, which is much higher than 7.39 % for the hole‐free device. The unencapsulated Cu(Cr,Ba)O2‐based PSC presents a remarkable stability in air in either 80 % humidity over 60 days or 80 °C conditions over 40 days or light illumination for 7 days. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00448249
- Volume :
- 131
- Issue :
- 45
- Database :
- Academic Search Index
- Journal :
- Angewandte Chemie
- Publication Type :
- Academic Journal
- Accession number :
- 139313200
- Full Text :
- https://doi.org/10.1002/ange.201910843