期刊
NATURE COMMUNICATIONS
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-018-06776-z
关键词
-
资金
- Ministry of Education, Singapore [MOE2016-T2-2-159, MOE2016-T2-1-128, MOE2015-T2-2-007, MOE Tier 1 RG164/15]
- National Research Foundation, Competitive Research Program [NRF-CRP18-2017-02]
- NSFC [61704082]
- Natural Science Foundation of Jiangsu Province [BK20170851]
- King Abdullah University of Science and Technology (KAUST)
The pursuit of optoelectronic devices operating in the mid-infrared regime is driven by both fundamental interests and envisioned applications ranging from imaging, sensing to communications. Despite continued achievements in traditional semiconductors, notorious obstacles such as the complicated growth processes and cryogenic operation preclude the usage of infrared detectors. As an alternative path towards high-performance photodetectors, hybrid semiconductor/graphene structures have been intensively explored. However, the operation bandwidth of such photodetectors has been limited to visible and near-infrared regimes. Here we demonstrate a mid-infrared hybrid photodetector enabled by coupling graphene with a narrow bandgap semiconductor, Ti2O3 (E-g = 0.09 eV), which achieves a high responsivity of 300 A W-1 in a broadband wavelength range up to 10 mu m. The obtained responsivity is about two orders of magnitude higher than that of the commercial mid-infrared photodetectors. Our work opens a route towards achieving high-performance optoelectronics operating in the mid-infrared regime.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据