Engineering and Technology

Rational molecular and device design enables organic solar cells approaching 20% efficiency

J. Fu, Q. Yang, et al.

Discover how the innovative design of the non-fullerene acceptor o-BTP-eC9 leads to a significant power conversion efficiency of 19.9%, as presented by a team of researchers including Jiehao Fu, Qianguang Yang, and many more. This advancement not only reduces energy loss but also enhances operational stability in organic solar cells.

00:00

Playback language: English

Index

Abstract

To enhance the competitiveness of organic solar cells (OSCs), the light-absorbing molecules must meet several key criteria, including a weak-absorption charge transfer state, high dielectric constant, suitable surface energy, and proper crystallinity. This study presents a rational design of the non-fullerene acceptor o-BTP-eC9, guided by theoretical calculations, exhibiting distinct photoelectric properties compared to BTP-eC9. The o-BTP-eC9-based device demonstrates reduced energy loss and achieves a power conversion efficiency (PCE) of 18.7%. Furthermore, incorporating o-BTP-eC9 into a ternary system (PM6:BTP-C9:o-BTP-eC9) yields a PCE of 19.9% (19.5% certified), along with improved operational stability.

Publisher

Nature Communications

Published On

Feb 28, 2024

Authors

Jiehao Fu, Qianguang Yang, Peihao Huang, Sein Chung, Kilwon Cho, Zhipeng Kan, Heng Liu, Xinhui Lu, Yongwen Lang, Hanjian Lai, Feng He, Patrick W. K. Fong, Shirong Lu, Yang Yang, Zeyun Xiao, Gang Li

Related Publications

Explore these studies to deepen your understanding of the subject.

Chemistry

Giant dimeric donors for all-giant-oligomer organic solar cells with efficiency over 16% and superior photostability

C. Wang, X. Ma, et al.

Chemistry

Asymmetric electron acceptor enables highly luminescent organic solar cells with certified efficiency over 18%

C. He, Z. Chen, et al.

Engineering and Technology

Constructing molecular bridge for high-efficiency and stable perovskite solar cells based on P3HT

D. Xu, Z. Gong, et al.

Engineering and Technology

Photon shifting and trapping in perovskite solar cells for improved efficiency and stability

S. Haque, M. Alexandre, et al.

Listen, Learn & Level Up

Over 10,000 hours of research content in 25+ fields, available in 12+ languages.

No more digging through PDFs, just hit play and absorb the world's latest research in your language, on your time.

listen to research audio papers with researchbunny