Issue 74, 2024

Through thickness anisotropy in all inorganic perovskite thin films via two-step synthesis: implications for voltaic devices

Abstract

Cesium-lead-bromide (CsPbBr3) has shown promise in thin film photovoltaics due to its desirable energy band gap, charge mobility and chemical and thermal stability. The low solubility of its single crystal in organic solvents has driven development of the two-step spin-coating technique. In this work, precursor solutions of different PbBr2 and CsBr concentrations were spin-coated and investigated via Photoelectron Spectroscopy. The properties of the CsxPbyBrz film in cross-section demonstrate this method leads to varying stoichiometries, work functions and band gaps through the thickness. This anisotropy of the perovskite thickness has ramifications for design of photovoltaic devices.

Graphical abstract: Through thickness anisotropy in all inorganic perovskite thin films via two-step synthesis: implications for voltaic devices

Supplementary files

Article information

Article type
Communication
Submitted
28 jun 2024
Accepted
20 aug 2024
First published
22 aug 2024

Chem. Commun., 2024,60, 10184-10187

Through thickness anisotropy in all inorganic perovskite thin films via two-step synthesis: implications for voltaic devices

Y. Yin, L. Garcia-Quintana, A. Chapsky, M. Llusca Jane and D. R. Evans, Chem. Commun., 2024, 60, 10184 DOI: 10.1039/D4CC03152K

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