| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 |
25권 2호 |
| 발표분야 |
포스터-콜로이드·계면화학 |
| 제목 |
Synthesis of single-crystalline graphene colloidal quantum dots and their application to perovskite photodetectors |
| 초록 |
Graphene quantum dots (GQDs) are carbon nanomaterials derived from graphene. Due to the small size of GQDs at the nanometer scale, they can interestingly exhibit a bandgap due to the combined effects of edge effect and quantum confinement. So far, research on synthesis methods of GQDs is still ongoing, and a reliable bottom-up method for synthesizing hexagonal single crystalline GQDs has not been fully developed. Herein, we introduce a reproducible bottom-up synthesis method for single crystalline GQDs. We synthesized blue-light emitting single crystalline GQDs by first creating Amadori products and then forming C=C bonds through a spontaneous dehydration reaction. By embedding the synthesized GQDs in a metal halide perovskite layer for perovskite photodetector applications, we observed the characteristics of reduced dark current, increased detectivity, and fast response. |
| 저자 |
송윤미, David Sunghwan Lee, 윤정섭, 임상혁
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| 소속 |
고려대 |
| 키워드 |
Graphene quantum dots; Bottom-up synthesis; Single-crystalline; Perovskite; Photodetectors
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| E-Mail |
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