Issue 5, 2020

Highly efficient tin perovskite solar cells achieved in a wide oxygen concentration range

Abstract

Tin perovskite solar cells (TPSCs) as one of the most promising candidates for lead-free PSCs have large potential to be industrialized in the future. However, TPSCs have often been fabricated at an extremely low oxygen concentration to avoid oxidation from Sn2+ to Sn4+, which is not applicable to their large scale production. In this work, we construct a carbonylate antioxidant capping layer atop the perovskite surface via a solvent engineering method to prevent oxygen permeation into the perovskite layer during the fabrication process of the device to enlarge the oxygen region from 0.1 ppm to 100 ppm. Meanwhile, a pinhole-free perovskite film with a large grain size, reduced Sn4+ defects and long carrier recombination lifetime was fabricated. As a result, high-performance TPSCs could be achieved in a wide range of oxygen concentration with a power conversion efficiency (PCE) of 9.47% at 0.1 ppm oxygen and 9.03% at 100 ppm oxygen, respectively; the device was stable, maintaining over 93% of its initial PCE after operating at the maximum power point under continuous light soaking (AM 1.5G, 100 mW cm−2) for 600 hours.

Graphical abstract: Highly efficient tin perovskite solar cells achieved in a wide oxygen concentration range

Supplementary files

Article information

Article type
Paper
Submitted
01 12 2019
Accepted
06 1 2020
First published
07 1 2020

J. Mater. Chem. A, 2020,8, 2760-2768

Highly efficient tin perovskite solar cells achieved in a wide oxygen concentration range

X. He, T. Wu, X. Liu, Y. Wang, X. Meng, J. Wu, T. Noda, X. Yang, Y. Moritomo, H. Segawa and L. Han, J. Mater. Chem. A, 2020, 8, 2760 DOI: 10.1039/C9TA13159K

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