| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
End-group tuning of DTBDT-based small molecules for OPVs |
| 초록 |
We designed and synthesized DTBDT-Rho, DTBDT-EC, and DTBDT-CN, which have 3-ethylrhodanine, dicyanovinyl, and ethyl cyanoacetate, respectively, as end groups. DTBDT-EC and DTBDT-CN have much deeper LUMO and HOMO energy levels than DTBDT-Rho due to the stronger electron withdrawal of their end groups. we synthesized a series of DTBDT-based small molecules with different end groups to investigated the influence of endgroup tuning on their bulk heterojunction morphologies. We have previously reported DTBDT-Rho with a high device performance of 7.10%. This small molecule has 3- ethylrhodanine end groups and exhibits a favorable blend film morphology, which is a principal factor in its high performance. Our study of end group tuning and morphological analysis provides valuable guidelines for the design of new small molecules and insight into their photovoltaic performances. |
| 저자 |
제환일1, 홍지수2, 권혁진2, 김나영1, 안태규3, 김윤희1, 권순기1
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| 소속 |
1경상대, 2포항공대, 3한국교통대 |
| 키워드 |
OPV; DTBDT; small molecules
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| E-Mail |
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