Issue 45, 2023

Efficiency enhancement of dopant-free perovskite solar cells by employing fluoro-substituted electron donor–electron acceptor type polymeric hole-transporting materials

Abstract

For the conventional n–i–p perovskite solar cells (PVSCs), dopant-free hole-transporting polymers can be employed to achieve high device performances. Herein, two electron donor–electron acceptor (D–A) type conjugated polymers PBCz-BTz and PBCz-FBTz were developed, in which benzodithiophene served as the D unit, and benzotriazole without or with fluoro-substituents was used as the A unit. PBCz-FBTz with fluoro-substituents exhibits a better π–π stacking effect, suitable energy levels, higher backbone planarity and hole mobility to PBCz-BTz. Thus, the champion device based on PBCz-FBTz exhibits an outstanding power conversion efficiency of 20.71% and retains over 90% of its original PCE after being stored under ambient conditions for 30 days. Our work confirms that developing novel polymeric HTMs with fluoro-substituents is a promising molecular design strategy for highly efficient PVSCs.

Graphical abstract: Efficiency enhancement of dopant-free perovskite solar cells by employing fluoro-substituted electron donor–electron acceptor type polymeric hole-transporting materials

Supplementary files

Article information

Article type
Paper
Submitted
29 अगस्त 2023
Accepted
26 अक्तूबर 2023
First published
27 अक्तूबर 2023

J. Mater. Chem. C, 2023,11, 15848-15854

Efficiency enhancement of dopant-free perovskite solar cells by employing fluoro-substituted electron donor–electron acceptor type polymeric hole-transporting materials

Y. Chen, X. Wang, G. You, S. Huang and H. Zhen, J. Mater. Chem. C, 2023, 11, 15848 DOI: 10.1039/D3TC03097K

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