| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ,Ⅱ |
| 제목 |
High-Performance of Near-Infrared Organic Photodetectors Using Side-Chain Engineering |
| 초록 |
In this study, we report a series of conjugate polymers(CPs) sharing the same conjugated framework to test their detection capability of near infrared light. The Responsivity and dark current were intercorrelated with the CPs miscibility with n-type PC71BM and the energy level configuration of the inverted-type device architecture through engineering CP side-chains. Based on morphological analysis of the active layer, 2EO-PDBF was found to form enlarged CP:PC71BM interfaces, providing a superioir photo-responsivity to other CPs having aliphatic side chains. In addition, it was proved that the relatively shallow lowest energy level(LUMO) of 2EO-PDBF suppressed the generation of dark current. As a result, from the reduced dark current and the improved photocurrent in 2EO-PDBF, a superior photo-detectivity exceeds 2×1012 Jones at 1000nm. We believe that the design strategies for CPs can limit dark current and ameliorate the light harvesting efficiencies of organic photodetectors. |
| 저자 |
이아영1, 강영권2, 은형주1, 계효진2, 김다희1, 허준석1, 김봉기2, 김종현1
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| 소속 |
1아주대, 2건국대 |
| 키워드 |
organic near-infrared photodetector; conjugated polymers; side chain engineering; dark current; bulk heterojunction
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| E-Mail |
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