Issue 11, 2021

Construction and mechanistic understanding of high-performance all-air-processed perovskite solar cells via mixed-cation engineering

Abstract

All-air-processed perovskite solar cells (PSCs) have attracted increasing attention due to their low cost and simplified manufacturing processes. At present, there is a need to fabricate efficient and stable PSCs in the air. In this work, dense perovskite films with a large grain size and low trap-state density can be obtained, when 30% of formamidinium (FA+) is incorporated into methylammonium lead iodide (MAPbI3). The champion device with a planar architecture of FTO/SnO2/FA0.3MA0.7PbI3/Spiro-OMeTAD/Au achieves a maximum power conversion efficiency (PCE) of 19.50%, which is one of the highest efficiencies yet reported for all-air-processed PSCs. In addition, the unencapsulated device exhibits excellent long-term stability and remarkable thermal stability, retaining over 85% of its original PCE after storage in ambient atmosphere for 90 days (>2100 h) and over 84% efficiency after storage at 100 °C for 27 h without inert conditions. Furthermore, the mechanisms underlying the improved performance are revealed through powerful characterization techniques and density functional theory calculations. Our work provides a facile strategy for the development of a new generation of fully air-processed PSCs for commercialization.

Graphical abstract: Construction and mechanistic understanding of high-performance all-air-processed perovskite solar cells via mixed-cation engineering

Supplementary files

Article information

Article type
Research Article
Submitted
28 一月 2021
Accepted
25 三月 2021
First published
26 三月 2021

Mater. Chem. Front., 2021,5, 4244-4253

Construction and mechanistic understanding of high-performance all-air-processed perovskite solar cells via mixed-cation engineering

W. Zhang, L. He, Y. Li, D. Tang, X. Li and L. Chang, Mater. Chem. Front., 2021, 5, 4244 DOI: 10.1039/D1QM00149C

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