| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터) |
| 권호 |
46권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Control of Temperature-Dependent Aggregation Behavior of Polymer Donors Enabling Processing Condition-Tolerant, Additive-Free High-Performance All-Polymer Solar Cells |
| 초록 |
In this work, the impact of temperature-dependent aggregation (TDA) behaviors in benzodithiophene (BDT)-based polymer donors (PDs) on the electrical, morphlogical and photovoltaic performances of all-polymer solar cells (all-PSCs) is investgated. In contrast to PBDB-T, PBDB-Bz with bulkier side chains exhibits strong aggregation behavior in solution independent of temperatures between 20 and 100 ℃. Notably, PBDB-Bz-based all-PSCs show a power conversion efficiency (PCE) of over 9% without any solvent additives (SA) or thermal annealing (TA). Furthermore, high PCEs for the PBDB-Bz-based devices are maintained irrespective of their processing temperatures (Tproc). However, the PCEs of PBDB-T-based devices are strongly dependent on their SA, TA and Tproc conditions. Thus, the development of PDs with temperature-insensitive, strong aggregation behavior is crucial in producing reproducible, Tproc-tolerant and additive-free high-performance all-PSC devices. |
| 저자 |
서수덕, 김진석, 강현범, 이진우, 이승진, 김건우, 김범준
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| 소속 |
KAIST |
| 키워드 |
polymer; solar cell; aggregation
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| E-Mail |
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