logo
ResearchBunny Logo
Vertically optimized phase separation with improved exciton diffusion enables efficient organic solar cells with thick active layers

Chemistry

Vertically optimized phase separation with improved exciton diffusion enables efficient organic solar cells with thick active layers

Y. Cai, Q. Li, et al.

This groundbreaking research demonstrates the creation of thick-film organic solar cells achieving certified efficiencies of up to 16.9%, utilizing a unique combination of a polymer donor and two non-fullerene acceptors. Conducted by leading researchers including Yunhao Cai and Qian Li, this study reveals how enhanced exciton diffusion and strategic vertical phase separation can significantly boost solar cell performance.

00:00
00:00
Playback language: English
Abstract
This paper reports the fabrication of efficient thick-film organic solar cells (OSCs) with an active layer consisting of one polymer donor and two non-fullerene acceptors. The use of two acceptors with enlarged exciton diffusion length, coupled with a layer-by-layer approach to optimize vertical phase separation, resulted in a 300 nm-thick OSC with a certified efficiency of 16.9% (17.31% un-certified). A 500 nm-thick device also showed an efficiency of 15.21%. These results highlight the importance of exciton diffusion length and graded vertical phase separation for achieving high-efficiency thick-film OSCs.
Publisher
Nature Communications
Published On
May 02, 2022
Authors
Yunhao Cai, Qian Li, Guanyu Lu, Hwa Sook Ryu, Yun Li, Hui Jin, Zhihao Chen, Zheng Tang, Guanghao Lu, Xiaotao Hao, Han Young Woo, Chunfeng Zhang, Yanming Sun
Tags
organic solar cells
thick-film
non-fullerene acceptors
exciton diffusion length
phase separation
photovoltaic efficiency
polymer donor

Related Publications

Explore these studies to deepen your understanding of the subject.

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

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

C. He, Z. Chen, et al.

Engineering fluorinated-cation containing inverted perovskite solar cells with an efficiency of >21% and improved stability towards humidity
Engineering and Technology

Engineering fluorinated-cation containing inverted perovskite solar cells with an efficiency of >21% and improved stability towards humidity

X. Wang, K. Rakstys, et al.

20%-efficient polycrystalline Cd(Se,Te) thin-film solar cells with compositional gradient near the front junction
Engineering and Technology

20%-efficient polycrystalline Cd(Se,Te) thin-film solar cells with compositional gradient near the front junction

D. Li, S. S. Bista, et al.

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

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

C. Wang, X. Ma, 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