Strain-induced power output enhancement in intrinsically stretchable organic solar cells

被引:2
作者
Lee, Jin-Woo [1 ]
Oh, Eun Sung [2 ]
Lee, Seungbok [3 ]
Phan, Tan Ngoc-Lan [1 ]
Kim, Taek-Soo [2 ]
Lee, Jung-Yong [3 ]
Reynolds, John R. [4 ]
Kim, Bumjoon J. [1 ]
机构
[1] Korea Adv Inst Sci & Technol KAIST, Dept Chem & Biomol Engn, Daejeon 34141, South Korea
[2] Korea Adv Inst Sci & Technol, Dept Mech Engn, Daejeon 34141, South Korea
[3] Korea Adv Inst Sci & Technol, Sch Elect Engn, Daejeon 34141, South Korea
[4] Georgia Inst Technol, Ctr Organ Photon & Elect, Sch Chem & Biochem, Sch Mat Sci & Engn,GeorgiaTech Polymer Network, Atlanta, GA 30332 USA
基金
新加坡国家研究基金会;
关键词
MECHANICALLY ROBUST; ACTIVE LAYER; PERFORMANCE; EFFICIENCY; PM7;
D O I
10.1016/j.joule.2024.11.009
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Intrinsically stretchable organic solar cells (IS-OSCs) are a promising class of wearable power sources. Although the power conversion efficiency (PCE) and mechanical stretchability of IS-OSCs have significantly improved, the current stretchability level still falls short of meeting the demands of wearable electronics. The power output (PCE x photoactive area) of these OSCs is a key figure of merit in determining their potential as power sources. However, the impact of stretching on changes in the photoactive area and the resulting power output has not been investigated. In this study, we construct highly stretchable and efficient photoactive systems by designing a polymer donor, PBET-TF. IS-OSCs based on PBET-TF maintain over 80% of their original PCE up to 50% strain (strain at PCE80% = 50%), which significantly outperforms the reference PBDB-TF-based IS-OSCs (strain at PCE80% = 11%). Importantly, for the first time, we demonstrate strain- induced power output increases in IS-OSCs using the developed PBET-TF-based photoactive systems.
引用
收藏
页数:15
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