| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO)) |
| 권호 |
44권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Diketopyrrolopyrrole based conjugated Polymer for Near-Infrared Photodetector applications |
| 초록 |
Near-infrared (NIR) photodetectors sensitive to 860 nm were fabricated through a solution process with two different conjugated polymers (CPs) sharing a similar conjugated backbone consisting of the diketopyrrolopyrrole (DPP) moiety. The two CPs had comparable conjugated nature, but their detection capability was significantly distinguished by the applied linker units, thiophene for PDPP-T and fluorinated thiophene for PDPP-FBT. First, it has been revealed that employing additive during active film preparation is beneficial to achieve optimum film morphology for both CPs, which can suppress dark current and provide enhanced detectivity. Thus, PDPP-FBT exhibited higher external quantum efficiency and responsivity overall wavelength. Our results indicate that the management of both film morphology and surface dipole of CP are evenly important to achieve high detectivity and responsivity in organic NIR photodetectors. |
| 저자 |
은형주1, 강영권2, 이대운1, 박재홍2, 김봉기2, 김종현1
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| 소속 |
1아주대, 2건국대 |
| 키워드 |
Near-infrared photodetector; Conjugated polymers; Bulk heterojunction; Morphology; Charge recombination; Dark current
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| E-Mail |
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