Issue 5, 2023

Environmentally friendly anti-solvent engineering for high-efficiency tin-based perovskite solar cells

Abstract

Tin-based perovskites are the most likely alternative candidates for lead-based counterparts due to their low toxicity and excellent optoelectronic properties. However, their uncontrollable crystallization process limits the improvement of device performance. Here, a green anti-solvent (acetic acid, HAc) has been first applied to adjust the crystallization process of tin-based perovskites, that is, to accelerate solution nucleation by salting-out crystallization and to slow down the crystal growth rate by hydrogen bond interactions. Furthermore, the non-volatilized residual HAc reduces the loss of organic amine salts and passivates defect states in the perovskites. Consequently, a device prepared using HAc realizes the highest efficiency of 12.78% (an open circuit voltage of 0.92 V) among non-chlorobenzene-based devices. Pioneeringly, we point out a general principle that the congeners of HAc, whose ability to form a hydrogen bond is not higher than that of HAc, can act as anti-solvents to prepare tin-based perovskites.

Graphical abstract: Environmentally friendly anti-solvent engineering for high-efficiency tin-based perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
19 Jan 2023
Accepted
24 Mar 2023
First published
28 Mar 2023

Energy Environ. Sci., 2023,16, 2177-2186

Environmentally friendly anti-solvent engineering for high-efficiency tin-based perovskite solar cells

Y. Su, J. Yang, H. Rao, Y. Zhong, W. Sheng, L. Tan and Y. Chen, Energy Environ. Sci., 2023, 16, 2177 DOI: 10.1039/D3EE00202K

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