期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 150, 期 1, 页码 296-300出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2010.06.070
关键词
Graphene; Chemical vapor deposition; Gas sensor
资金
- National Science Foundation [0907336]
- Miller Family Endowment
- Midwest Institute for Nanoelectronics Discovery (MIND)
- Indiana Economic Development Corporation (IEDC)
- American Chemical Society
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0907336] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0847638] Funding Source: National Science Foundation
Graphene with a large area was synthesized on Cu foils by chemical vapor deposition under ambient pressure A 4 '' x 4 '' graphene film was transferred onto a 6 '' Si wafer with a thermally grown oxide film Raman mapping indicates monolayer graphene dominates the transferred graphene film Gas sensors were fabricated on a 4 mm x 3 mm size graphene film with a 1 nm palladium film deposited for hydrogen detection Hydrogen in air with concentrations in 00025-1% (25-10,000 ppm) was used to test graphene-based gas sensors The gas sensors based on palladium-decorated graphene films show high sensitivity, fast response and recovery, and can be used with multiple cycles The mechanism of hydrogen detection is also discussed (C) 2010 Elsevier B V All rights reserved
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