화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2018년 봄 (05/02 ~ 05/04, 대구 엑스코(EXCO))
권호 22권 1호
발표분야 고분자_포스터
제목 A Study on Characterization of Novel Small Molecule Accroding to Different Alkyl Side Chain with BDTs
초록 A series of small molecule consist of Quinoxaline and Benzodithiophene ( BDT ) had different length of alkyl side chain. These small molecule displayed λmax 468 ~ 475nm in solution and 536 ~ 540nm in film state. These small molecule had same backbone excluding alkyl side chain. For the reason, these small molecule had similar electrochemical properties. On the other hand, they indicated slightly different in HOMO energy level. The ethyl-hexyl-substituted BDT ((EH-BDT(DTDFDDoQx)2, EH-BDT(DTDFDHexQx)2) had a deeper HOMO energy value ( -5.38, -5.35 ) than the octyl-substituted BDT ((Oct-BDT(DTDFDDoQx)2, Oct-BDT(DTDFDHexQx)2). LUMO energy value ( -3.21, -3.22, -3.17 and -3.19) was similar because of these small molecule had same backbone. As a result, EH-BDT(DTDFDDoQx)2 had long alkyl side chain ( dodecyl ) in Quinoxaline unit and bulky side chain ( ethyl-hexyl ) in BDT unit approached highest PCE of 0.62% in series.
저자 권지현, 이근대, 박성수, 진영읍
소속 부경대
키워드 OPVs; small molecule
E-Mail yjin@pknu.ac.kr