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  • 09월 20일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제126회 대한화학회 학술발표회 및 총회 Main Chain Conjugated Copolymer Having Donor-Acceptor Heterojunctions for Versatile Outdoor and Indoor Photovoltaic Power Generation

2020년 9월 17일 13시 36분 43초
POLY.P-38 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 21일(수) 17:00~17:30
Polymer Chemistry
저자 및
Nayeon Kwon, Su Hong Park, Hun Gu Kang, Young Un Kim, Hyung Jong Kim, Jinhyo Hwang, Hyo Jae Yoon, Dong Hoon Choi*
Department of Chemistry, Korea University, Korea
We successfully synthesized a crystalline main chain conjugated copolymer, P(BDBT-co-NDI2T), having BDBT donor-NDI2T acceptor heterojunctions in film states. Interestingly, the polymer exhibited a strong absorption band from 500 to 650 nm, which is overlapped well with the emission spectrum of white light-emitting diodes (LED) used as an indoor light source. The P(BDBT-co-NDI2T) films showed the relatively smooth surface and internal morphology compared to the blend films of P(BDBT) and P(NDI2T). In particular, the Kelvin probe force microscopy data explained the increased uniformity in the distribution of the surface charge in the annealed P(BDBT-co-NDI2T) films as compared to those of the annealed blend films of P(BDBT) and P(NDI2T). Indoor photovoltaics (IPV) produced by using the P(BDBT-co-NDI2T) synthesized in this study as an active layer, showed a high power conversion efficiency of 12.70% (@500 lux) with a short circuit current density of 49.89 A cm-2. The PCE of the P(BDBT-co-NDI2T) film-based IPV was twice as high as that of the blend film-based IPV and showed excellent operational stability. This study is the first time that the P(BDBT-co-NDI2T) has been applied to IPV, which suggests the potential for their widespread use in the development of indoor organic PVs in the future.