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  • 02월 20일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제113회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Diketopyrrolopyrrole-Containing Hole Transporting Conjugated Polymer for use in Efficient Stable Organic-Inorganic Hybrid Solar Cells based on a Perovskite

등록일
2014년 3월 10일 16시 16분 35초
접수번호
1449
발표코드
KCS4-5 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 11시 : 10분
발표형식
심포지엄
발표분야
한국다우케미칼 어워드 수상자 구두발표
저자 및
공동저자
임종철, 권영수, 윤희준1, 김윤희1,*, 박태호*
포항공과대학교 화학공학과, Korea
1경상대학교 화학과, Korea

Poly[2,5-bis(2-decyldodecyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione-(E)-1,2-di(2,2’-bithiophen-5-yl) ethene] (PDPPDBTE) was successfully incorporated as a p-type hole transporting material in solid-state organic-inorganic hybrid solar cells. The excellent optical and electrical properties of organo-lead halide perovskite (CH3NH3PbI3) nanocrystals used as a light harvester yielded a 9.2% power conversion efficiency (PCE) for the best-performing cell that exceeded the value (7.6%) obtained from the best hole conductor yet reported (2,2',7,7'-tetrakis(N,N-di-p-methoxyphenyl-amine)9,9'-spirobifluorene, spiro-MeOTAD). The high PCE was attributed to the optimal oxidation potential (5.4 eV) and excellent charge carrier mobility of the polymer. The hydrophobicity of the polymer prevented water permeation into the porous perovskite heterojunction, and long-term aging tests over 1000 hours confirmed the enhanced stability of the PDPPDBTE-based cells.

Figure 1. (a) D-π-A conjugated polymer successfully incorporated with perovskite-based organic-inorganic hybrid solar cells, outperforming the ever-best spiro-MeOTAD hole transporting material. (b) J-V curves of the hybrid solar cells made from spiro-MeOTAD, P3HT, and PDPPDBTE HTMs. (c) The effective conductivities of the HTMs ((A): including Li-TFSI and tBP additives).


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