The formation of graphene-titania hybrid films and their resistance change under ultraviolet irradiation

Pengzhan Sun, Renzhi Ma, Minoru Osada, Takayoshi Sasaki, Jinquan Wei, Kunlin Wang, Dehai Wu, Yao Cheng, Hongwei Zhu

研究成果: Article査読

18 被引用数 (Scopus)

抄録

We report the fabrication of hybrid films of graphene and monolayer titania using a simple electrostatic self-assembly method. Ultraviolet (UV) responses of the hybrid films based on the graphene-titania structure were investigated. We observed that the resistance of the graphene-titania hybrid increased exponentially with UV irradiation time and decreased exponentially when UV was turned off. Time constants of the order of hundreds of seconds were identified and found to be sensitive to the gas environment of graphene. The UV response as well as the time constant is tunable by varying the number of titania layers. Our results confirmed that UV irradiation played a significant role in the resistance modulation of graphene as well as graphene-titania hybrid films.

本文言語English
ページ(範囲)4518-4523
ページ数6
ジャーナルCarbon
50
12
DOI
出版ステータスPublished - 2012 10
外部発表はい

ASJC Scopus subject areas

  • Chemistry(all)

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