| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 봄 (04/27 ~ 04/29, 부산 BEXCO) |
| 권호 |
22권 1호, p.884 |
| 발표분야 |
재료 |
| 제목 |
High-performance ultraviolet photodetectors based on ZnS/graphene hybrid nanostructures |
| 초록 |
Ultraviolet (UV) light photodetectors constructed from solely inorganic semiconductors still remain unsatisfactory because of their low electrical performances. To overcome this limitation, the hybridization is one of the key approaches that have been recently adopted to enhance the photocurrent. High-performance UV photodetectors showing stable on-off switching and excellent spectral selectivity have been fabricated based on the hybrid structure of solution-grown ZnS nanobelts and CVD-grown graphene. Sandwiched structures and multilayer stacking strategies have been applied to expand effective junction between graphene and photoactive ZnS nanobelts. A multiply sandwich-structured photodetector of graphene/ZnS has shown a photocurrent of 0.115mA under illumination of 1.2mWcm−2 in air at a bias of 1.0V, which is higher 107 times than literature values. The multiple-sandwich structure of UV-light sensors with graphene having high conductivity, flexibility, and impermeability is suggested to be beneficial for the facile fabrication of UV photodetectors with extremely efficient performances. |
| 저자 |
김연호1, 김상진2, 홍병희3, 장두전3
|
| 소속 |
1한국기초과학지원(연), 2한국과학기술(연), 3서울대 |
| 키워드 |
센서 및 소자; Nanofabrication
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
