| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 |
25권 2호 |
| 발표분야 |
포스터-고분자 |
| 제목 |
FLEXIBLE LINKER INCORPORATED POLYMER DONORS ENABLE SUPERIOR BLEND MISCIBILITY FOR HIGH-PERFORMANCE AND MECHANICALLY-ROBUST POLYMER SOLAR CELLS |
| 초록 |
Here, we develop a series of novel polymer donors (PDs), with which highly efficient PSCs with remarkable mechanical reliability are demonstrated. By interposing controlled amount of 1,10-di(thiophen-2-yl)decane flexible spacer (FS) into a PM6 backbone, affording sufficient pathways for efficient charge percolation and mechanical stress dissipation. As a result, PSCs based on the PD containing 5 mol% FS unit and Y7 exhibit a high power conversion efficiency (PCE) of 17% with a crack onset strain (COS) of 12% and a cohesive fracture energy (Gc) of 2.1 J m–2, significantly outperforming the reference PM6-based devices (PCE = 15%, COS = 2% and Gc= 1.0 J m–2). Both the photovoltaic performance and mechanical robustness of these PSCs are among the best values reported to date. The rational design of PDs demonstrated here presents a highly promising strategy to address the mechanical properties of SMA-based solar cells and their viable application in flexible/stretchable electronics. |
| 저자 |
서수덕, 이진우, 정다현, 김동준, 김택수, 김범준
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| 소속 |
한국과학기술원 |
| 키워드 |
polymer donor; mechanical reliability; high efficiency
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| E-Mail |
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