High Quantum Yield Sensitization of Single Crystal TiO₂ Electrodes with CsPbBr₃ Nanocrystals

Lead halide perovskites are promising materials for solar cells and photodetectors. Nanocrystals of this family of perovskites also have distinct properties. In this study we report the attainment of high quantum yield sensitized photocurrents from stabilized CsPbBr3 perovskite nanocrystals thermally evaporated onto doped single crystal rutile (110) TiO2 electrodes. Sensitized photocurrent stabilization was achieved by capping the nanocrystals with a thin NiOx layer and a Au carrier transport and protection layers respectively as well as the judicious choice of solvent and electrolyte.(c) 2023 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY,http://creativecommons.org/licenses/by/4.0/)