Issue 37, 2022

Preserving the stoichiometry of triple-cation perovskites by carrier-gas-free antisolvent spraying

Abstract

The use of antisolvents during the fabrication of solution-processed lead halide perovskite layers is increasingly common. Usually, the antisolvent is applied by pipetting during the spin-coating process, which often irreversibly alters the composition of the perovskite layer, resulting in the formation of PbI2 at the surface and bulk of the perovskite layer. Here, we demonstrate that by applying the antisolvent via carrier-gas free spraying, the stoichiometry of the perovskite layer is far better preserved. Consequently, the photovoltaic performance of triple cation photovoltaic devices fabricated in an inverted architecture is enhanced, mainly due to an increase in the open-circuit voltage. By exploring different volumes of antisolvent, we show that spraying as little as 60 μL results in devices with power conversion efficiencies as high as 21%. Moreover, solar cells with sprayed antisolvent are more stable than those fabricated by pipetting the antisolvent.

Graphical abstract: Preserving the stoichiometry of triple-cation perovskites by carrier-gas-free antisolvent spraying

Supplementary files

Article information

Article type
Paper
Submitted
10 Dec 2021
Accepted
01 Feb 2022
First published
11 Feb 2022

J. Mater. Chem. A, 2022,10, 19743-19749

Preserving the stoichiometry of triple-cation perovskites by carrier-gas-free antisolvent spraying

O. Telschow, M. Albaladejo-Siguan, L. Merten, A. D. Taylor, K. P. Goetz, T. Schramm, O. V. Konovalov, M. Jankowski, A. Hinderhofer, F. Paulus, F. Schreiber and Y. Vaynzof, J. Mater. Chem. A, 2022, 10, 19743 DOI: 10.1039/D1TA10566C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements