Issue 15, 2018

Facile surface modification of CH3NH3PbI3 films leading to simultaneously improved efficiency and stability of inverted perovskite solar cells

Abstract

The intrinsic stability issues of organo-metal halide perovskite materials induced by moisture, heat, light and the presence of an electric field constitute big obstacles that are preventing perovskite solar cells (PSCs) from industrial application. Herein, we have demonstrated that when a hydrophobic organic acid molecule, 4-dimethylaminobenzoic acid, is introduced to modify the top surface of a CH3NH3PbI3 thin film, it is a facile way to simultaneously enhance the stability and efficiency of the corresponding PSCs. This surface modification can not only improve the perovskite film’s electronic quality but also provide it with a certain waterproofing capability. Accordingly, the efficiency of the inverted PSC is improved from 17.43% to 19.87%. More encouragingly, after 1 sun light soaking, 85 °C thermal aging, and high humidity (70%) aging for 1000 hours, the modified CH3NH3PbI3 based PSCs can retain 91%, 81% and 98% efficiency, respectively.

Graphical abstract: Facile surface modification of CH3NH3PbI3 films leading to simultaneously improved efficiency and stability of inverted perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
09 jan 2018
Accepted
13 feb 2018
First published
15 feb 2018

J. Mater. Chem. A, 2018,6, 6255-6264

Facile surface modification of CH3NH3PbI3 films leading to simultaneously improved efficiency and stability of inverted perovskite solar cells

H. Zhu, B. Huang, S. Wu, Z. Xiong, J. Li and W. Chen, J. Mater. Chem. A, 2018, 6, 6255 DOI: 10.1039/C8TA00267C

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