| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-에너지저장·변환 |
| 제목 |
Enhanced Weak-Light Detection of Perovskite Photodetectors through Perovskite/Hole-Transport Material Interface Treatment |
| 초록 |
Weak light detection of organic-inorganic halide perovskite photodetectors was enhanced as a result of benzylammonium iodide (BzAI) treatment at the perovskite and hole-transport layer (HTL) interface. Growth of the two-dimensional Ruddlesden-Popper perovskite phase was observed at the perovskite surface, shifting the overall surface work function upwards and facilitating charge transfer across the perovskite/HTL interface. As a result, the optimized device with BzAI treatment exhibited short rise time (trise) and decay time (tdecay) of 53 and 38 μs, respectively, compared to the trise and tdecay of the pristine device at 214 and 120 μs, respectively. In addition, the BzAI treated device exhibited wider linearity, demonstrating a high and stable specific detectivity of 1.49 × 1013 to 2.14 × 1013 Jones under incident light intensity of 10-3 to 100 mW/cm2, respectively. |
| 저자 |
이성환, 허진혁, 박진경, 김봉우, 이형준, 송윤미, 임상혁
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| 소속 |
고려대 |
| 키워드 |
perovskite photodetector; Ruddlesden-Popper interfacial treatment; low hysteresis; weak light detection; work function shift; efficient charge transfer
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| E-Mail |
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