| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-고분자 |
| 제목 |
Granular Perovskite Wire Based Flexible Photodetectors with Superb Photodetectivity |
| 초록 |
Control over the morphology and crystallinity of perovskite materials is of key importance to enable high-performance optoelectronics. Here, we report a simple yet effective template-free self-assembly synthesis of perovskite granular wires with high photodetectivity (3.17 × 1015 Jones). The 1D self-assembly of perovskite grains is driven by differences in the surface interaction energies of the granular facets. The superb photodetecting performance originates from low dark current engendered by energetic barriers featuring unique band-edge modulation along the long axis of wire. Flexible photodetector arrays show independently addressable photonic signal mapping with ultra-high detectivity, photoconductive gain, and responsivity. The “self-assembled nanograin engineering” strategy developed in this study provides a viable method for the development of high-performance perovskite photodetectors and can be extended to other integrated optoelectronic systems. |
| 저자 |
이정훈1, 이윤호2, 송인호1, 김수환3, 박주현3, 박성오3, 원유상1, 조길원4, 곽상규3, 오준학1
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| 소속 |
1서울대, 2POSTECH / 서울대, 3UNIST, 4POSTECH |
| 키워드 |
perovskite wire; granular wire; flexible photosensor; photomapping array
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| E-Mail |
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