Oxygen-induced abnormal photoelectric behavior of a MoO3/graphene heterocomposite

Juehan Yang; Renxiong Li; Nengjie Huo; Wen-Long Ma; Fangyuan Lu; Chao Fan; Shengxue Yang; Zhongming Wei; Jingbo Li; Shu-Shen Li

doi:10.1039/c4ra08557d

Oxygen-induced abnormal photoelectric behavior of a MoO₃/graphene heterocomposite

Juehan Yang, Renxiong Li, Nengjie Huo, Wen-Long Ma, Fangyuan Lu, Chao Fan, Shengxue Yang, Zhongming Wei, Jingbo Li, Shu-Shen Li

Department of Chemistry

7 Citations (Scopus)

Abstract

A MoO₃ nanoflakes/graphene heterocomposite synthesized by a water bath method showed unusual photoelectric behavior. Its resistance increased under visible light irradiation in air. The behavior arises from the physical contact between the two materials, which leads to hole doping in graphene. Thus, the increase of electrons in the MoO₃ nanoflakes induced by desorption of oxygen molecules from its surface under visible light was probably the main reason for the change in resistance. This was confirmed by the resistance of the heterocomposite in a vacuum being 10² times larger than that in air, and by the photoelectric measurements under Ar. The MoO₃ nanoflakes/graphene heterocomposite exhibits great potential for use in oxygen gas sensing.

Original language	English
Journal	R S C Advances
Volume	4
Issue number	91
Pages (from-to)	49873-49878
Number of pages	6
ISSN	2046-2069
DOIs	https://doi.org/10.1039/c4ra08557d
Publication status	Published - 2014

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title = "Oxygen-induced abnormal photoelectric behavior of a MoO3/graphene heterocomposite",

abstract = "A MoO3 nanoflakes/graphene heterocomposite synthesized by a water bath method showed unusual photoelectric behavior. Its resistance increased under visible light irradiation in air. The behavior arises from the physical contact between the two materials, which leads to hole doping in graphene. Thus, the increase of electrons in the MoO3 nanoflakes induced by desorption of oxygen molecules from its surface under visible light was probably the main reason for the change in resistance. This was confirmed by the resistance of the heterocomposite in a vacuum being 102 times larger than that in air, and by the photoelectric measurements under Ar. The MoO3 nanoflakes/graphene heterocomposite exhibits great potential for use in oxygen gas sensing.",

author = "Juehan Yang and Renxiong Li and Nengjie Huo and Wen-Long Ma and Fangyuan Lu and Chao Fan and Shengxue Yang and Zhongming Wei and Jingbo Li and Shu-Shen Li",

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doi = "10.1039/c4ra08557d",

language = "English",

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pages = "49873--49878",

journal = "RSC Advances",

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TY - JOUR

T1 - Oxygen-induced abnormal photoelectric behavior of a MoO3/graphene heterocomposite

AU - Yang, Juehan

AU - Li, Renxiong

AU - Huo, Nengjie

AU - Ma, Wen-Long

AU - Lu, Fangyuan

AU - Fan, Chao

AU - Yang, Shengxue

AU - Wei, Zhongming

AU - Li, Jingbo

AU - Li, Shu-Shen

PY - 2014

Y1 - 2014

N2 - A MoO3 nanoflakes/graphene heterocomposite synthesized by a water bath method showed unusual photoelectric behavior. Its resistance increased under visible light irradiation in air. The behavior arises from the physical contact between the two materials, which leads to hole doping in graphene. Thus, the increase of electrons in the MoO3 nanoflakes induced by desorption of oxygen molecules from its surface under visible light was probably the main reason for the change in resistance. This was confirmed by the resistance of the heterocomposite in a vacuum being 102 times larger than that in air, and by the photoelectric measurements under Ar. The MoO3 nanoflakes/graphene heterocomposite exhibits great potential for use in oxygen gas sensing.

AB - A MoO3 nanoflakes/graphene heterocomposite synthesized by a water bath method showed unusual photoelectric behavior. Its resistance increased under visible light irradiation in air. The behavior arises from the physical contact between the two materials, which leads to hole doping in graphene. Thus, the increase of electrons in the MoO3 nanoflakes induced by desorption of oxygen molecules from its surface under visible light was probably the main reason for the change in resistance. This was confirmed by the resistance of the heterocomposite in a vacuum being 102 times larger than that in air, and by the photoelectric measurements under Ar. The MoO3 nanoflakes/graphene heterocomposite exhibits great potential for use in oxygen gas sensing.

U2 - 10.1039/c4ra08557d

DO - 10.1039/c4ra08557d

M3 - Journal article

SN - 2046-2069

VL - 4

SP - 49873

EP - 49878

JO - RSC Advances

JF - RSC Advances

IS - 91

ER -

Oxygen-induced abnormal photoelectric behavior of a MoO3/graphene heterocomposite

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Oxygen-induced abnormal photoelectric behavior of a MoO₃/graphene heterocomposite