Volume 137, Issue 8 e202420385
Forschungsartikel

“Double-Gene” Small Molecule as Guest Component Promotes the Efficiency of Organic Solar Cells Beyond 19.5 %

Jiawei Deng

Jiawei Deng

Institute of Geriatrics, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, 330006 Jiangxi, PR China

School of Chemistry and Chemical Engineering/, Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031 Jiangxi, PR China

J. Deng, J. Liu and C. Jin contributed equally to this work.

Search for more papers by this author
Jiabin Liu

Jiabin Liu

School of Chemistry and Chemical Engineering/, Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031 Jiangxi, PR China

J. Deng, J. Liu and C. Jin contributed equally to this work.

Search for more papers by this author
Chengkai Jin

Chengkai Jin

School of Physics, Southeast University, Nanjing, 211189 Jiangsu, PR China

J. Deng, J. Liu and C. Jin contributed equally to this work.

Search for more papers by this author
Dr. Shaorong Huang

Corresponding Author

Dr. Shaorong Huang

Institute of Geriatrics, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, 330006 Jiangxi, PR China

Search for more papers by this author
Shijing Zhang

Shijing Zhang

School of Chemistry and Chemical Engineering/, Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031 Jiangxi, PR China

Search for more papers by this author
Zhao Qin

Zhao Qin

School of Chemistry and Chemical Engineering/, Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031 Jiangxi, PR China

Search for more papers by this author
Jiaping Xie

Jiaping Xie

School of Chemistry and Chemical Engineering/, Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031 Jiangxi, PR China

Search for more papers by this author
Lin Liu

Lin Liu

School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002 Henan, PR China

Search for more papers by this author
Prof. Dr. Lie Chen

Corresponding Author

Prof. Dr. Lie Chen

School of Chemistry and Chemical Engineering/, Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031 Jiangxi, PR China

Search for more papers by this author
Prof. Yiwang Chen

Corresponding Author

Prof. Yiwang Chen

School of Chemistry and Chemical Engineering/, Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031 Jiangxi, PR China

Search for more papers by this author
First published: 02 January 2025

Abstract

Introduction of a guest component into the active layer is a simple yet effective approach to enhance the performance of organic solar cells (OSCs). Despite various guest components successfully employed in the OSCs, efficient guest components require deliberate design and ingenious inspiration, which still remains a big challenge for developing high performance OSCs. In this work, we propose a concept of “structural gene” engineering to create a new “double-gene” small molecule (L-DBDD) by simply combining the structures of both donor PM6 and acceptor L8-BO. L-DBDD inherit the features of both donor and acceptor, which naturally acts as a bridge between donor/acceptor (D/A) interfaces to strengthen D/A interactions and compatibility. Incorporation of this “double-gene” small molecule into the active layer can facilitate rapid charge dissociation and simultaneously optimize molecular packing for efficient charge transport. Consequently, the ternary OSC based on PM6 : L-DBDD : L8-BO blend achieves a top power conversion efficiency (PCE) of 19.51 %, significantly suppressing the binary control device (PCE=18.52 %). These results demonstrate that the design concept of “double-gene” small molecule by combination of the “structural gene” of donor and acceptor provides a simple and meaningful guideline for guest component-assisted highly efficient OSCs.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.