화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2016년 가을 (10/26 ~ 10/28, 제주국제컨벤션센터(ICCJEJU))
권호 20권 2호
발표분야 에너지저장변환_포스터
제목 Relationship between Phase-Separated Domain Sizes of Active Layer and Photovoltaic Parameters in All-Polymer Solar Cells
초록 The control of the bulk heterojunction (BHJ) morphology in polymer/polymer blends remains a critical hurdle for optimizing all-polymer solar cells (all-PSCs). The relationship between donor/acceptor phase separation, domain size, and the resulting photovoltaic characteristics of poly{2,5-di(2-thienyl)thiophene-alt-6,7-difluoro-2,3-bis(3,4-bi(octyloxy)phenyl)quinoxaline)} and poly{N,N’-bis(2-octyldodecyl-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl)-alt-5,5’-(2,2’-bithiophene)}-based all-PSCs was investigated. We varied the film-processing solvents (chloroform, chlorobenzene, o-dichlorobenzene and p-xylene), thereby manipulating the phase-separation of all-polymer blends with the domain size in the range of 30-300 nm. Our results suggest that the BHJ morphology was not fully optimized for most of the previous high-performance all-PSC systems, and their photovoltaic performance can be further improved by fine-engineering the film morphology.
저자 김상우1, 이창연1, Yuxiang Li2, 이원호1, 이영민3, 최준형1, 김태수1, Cheng Wang4, Enrique D. Gomez3, 우한영2, 김범준1
소속 1KAIST, 2고려대, 3The Pennsylvania State Univ., 4Lawrence Berkeley National Laboratory
키워드 All-polymer solar cell; domain size; phase separation; processing solvent
E-Mail bumjoonkim@kaist.ac.kr