Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 19, Pages 9563-9571Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am403186r
Keywords
graphene; graphene oxide; hybrid; temperature coefficient of resistivity
Funding
- Beijing Natural Science Foundation [2122027]
- National Program on Key Basic Research Project [2011CB013000]
- Tsinghua University Initiative Scientific Research Program [2012Z02102]
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Materials with low temperature coefficient of resistivity (TCR) are of great importance in some areas, for example, highly accurate electronic measurement instruments and microelectronic integrated circuits. In this work, we demonstrated the ultrathin graphene-graphene oxide (GO) hybrid films prepared by layer-by-layer assembly with very small TCR (30-100 degrees C) in the air. Electrical response of the hybrid films to temperature variation was investigated along with the progressive reduction of GO sheets. The mechanism of electrical response to temperature variation of the hybrid film was discussed, which revealed that the interaction between graphene and GO and the chemical doping effect were responsible for the tunable control of its electrical response to temperature variation. The unique properties of graphene-GO hybrid film made it a promising candidate in many areas, such as high-end film electronic device and sensor applications.
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