Issue 13, 2024

Halogen substitution of perinone-based cathode interfacial materials for high-efficiency inverted perovskite solar cells

Abstract

The development of cathode interfacial materials (CIMs) is one of the most effective ways to improve the performance of perovskite solar cells (PSCs). In inverted PSCs, CIMs lag behind in terms of the quick increase of the power conversion efficiency (PCE). In this study, we designed and synthesized two perinone-based CIMs, NX-F and NX-Cl and successfully applied them to inverted PSCs. Four fluorine and chlorine atoms were introduced into the perinone core of NX-F and NX-Cl, respectively. Compared to the NX-Cl film, the NX-F film possesses a lower LUMO level, stronger π–π stacking and higher electron mobility. The inverted PSCs with NX-F as the CIM achieve a champion PCE of 21.18%, which is higher than that of NX-Cl devices (20.25%) and control devices (19.42%). The superior PCE of the NX-F devices is accompanied by the improvement of all parameters. Further investigation demonstrates that the NX-F devices exhibit the lowest trap density and recombination and the best charge transfer and transport. The PSCs with NX-F and NX-Cl also show fine storage stabilities in nitrogen and humid air atmospheres.

Graphical abstract: Halogen substitution of perinone-based cathode interfacial materials for high-efficiency inverted perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
18 Jan 2024
Accepted
27 Feb 2024
First published
29 Feb 2024

J. Mater. Chem. C, 2024,12, 4676-4681

Halogen substitution of perinone-based cathode interfacial materials for high-efficiency inverted perovskite solar cells

S. Zhang, T. Xu, P. Wu, J. Pan, W. Zhang and W. Song, J. Mater. Chem. C, 2024, 12, 4676 DOI: 10.1039/D4TC00266K

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