Highly sensitive wide bandwidth photodetectors using chemical vapor deposited graphene
- Authors
- Kang, Chang Goo; Lee, Sang Kyung; Yoo, Tae Jin; Park, Woojin; Jung, Ukjin; Ahn, Jinho; Lee, Byoung Hun
- Issue Date
- Apr-2014
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.104, no.16, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 104
- Number
- 16
- Start Page
- 1
- End Page
- 5
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/160328
- DOI
- 10.1063/1.4872267
- ISSN
- 0003-6951
- Abstract
- A photodetector generating a nearly constant photocurrent in a very wide spectral range from ultraviolet (UV) to infrared has been demonstrated using chemical vapor deposited (CVD) graphene. Instability due to a photochemical reaction in the UV region has been minimized using an Al2O3 passivation layer, and a responsivity comparable to that of Highly Ordered Pyrolytic Graphite graphene photodetectors of similar to 8mA/W has been achieved at a 0.1V bias, despite high defect density in the CVD graphene. A highly sensitive multi-band photodetector using graphene has many potential applications including optical interconnects, multi-band imaging sensors, highly sensitive motion detectors, etc.
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