| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Optical Manipulation via Thickness Control for High-Performance Red-Selective Organic Photodiodes |
| 초록 |
An organic photodiode (OPD) with red-selective and high performance was designed. Polymer semiconductor which has dual-band absorbing property(PPDT2FBT) was used as the photoactive layer in bilayer structure with an ITO electrode coated with sol–gel-derived ZnO. We controlled the thickness of photoactive layer systematically to minimize the absorption of peak which located in low wavelength region (λpeak =420 nm) of PPDT2FBT without damaging main absorption region (λpeak = 650 nm). The optimized thickness of PPDT2FBT was ~320 nm to fabricate red-selective OPD with low dark current density. In addition, further suppression of unwanted wavelength absorption due to deep blue color-filter effect was enabled to the introduction of strategically designed ZnO in front of PPDT2FBT in a light path. As a result, outstanding red-selective photodiode performance was shown by the fabricated OPD with peak detectivity over 3.0 × 1012 Jones and a high linear dynamic range of ~120 dB. |
| 저자 |
윤성원, 김수관, 김주희, Deepan Kumar Neethipathi, 정대성
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| 소속 |
대구경북과학기술원 |
| 키워드 |
Red-selectivity; Organic photodiode; High detectivity
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| E-Mail |
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