Abstract
Combing graphene and other two-dimentional materials in heterostructure or the hybridization of graphene with a gain material for photodetection offers the possiblity to expand the wavelength range of operation and improve performance. Here, we fabricated two novel photodetectors based on graphene-Bi2Te3 heterostructure and hybrid graphene-perovskite islands, respectively. Our results show that the graphene-Bi2Te3 photodetector has a photoresponsivity of 35 AW-1 at a wavelength of 532 nm and an expanded detection wavelength range further to near-infrared (NIR) (980 nm) and telecommunication band (1550 nm). On the other hand, the hybrid graphene-perovskite phototransistros show a photoconductive gain of ∼109 electrons per photon and a responsivity of ∼6.0×105 AW-1 with a broadband detection from ultraviolet (UV) to visible (250-700 nm).
Original language | English |
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Title of host publication | 2015 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, (IMWS-AMP 2015) - Proceedings |
Subtitle of host publication | Suzhou, China; 1-3 July 2015 |
Place of Publication | Piscataway NJ USA |
Publisher | IEEE, Institute of Electrical and Electronics Engineers |
Pages | 217-219 |
Number of pages | 3 |
ISBN (Electronic) | 9781479964505 |
DOIs | |
Publication status | Published - 10 Nov 2015 |
Event | IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications 2015 - Suzhou, China Duration: 1 Jul 2015 → 3 Jul 2015 https://searchworks.stanford.edu/view/11941209 https://ieeexplore.ieee.org/xpl/conhome/7299213/proceeding (Proceedings) |
Workshop
Workshop | IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications 2015 |
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Abbreviated title | IMWS-AMP 2015 |
Country/Territory | China |
City | Suzhou |
Period | 1/07/15 → 3/07/15 |
Internet address |
Keywords
- Graphene
- heterostructure
- peroskite
- photodetector