Photoresponse of SnO2 nanobelts grown in situ on interdigital electrodes

Yujin Chen; Chunling Zhu; Maosheng Cao; Taihong Wang

doi:10.1088/0957-4484/18/28/285502

Photoresponse of SnO₂ nanobelts grown in situ on interdigital electrodes

Yujin Chen^*, Chunling Zhu, Maosheng Cao, Taihong Wang

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

60 Citations (Scopus)

Abstract

The photoresponses of SnO₂ nanobelts grown in situ among interdigital electrodes on silicon substrates were investigated under ultraviolet (UV) light and green laser illumination. The current increased to ∼140 nA in vacuum under green laser irradiation with a power of 35.1 mW. Under UV illumination, however, the source-drain current increased to ∼80 μA in air and up to ∼900 μA in vacuum, respectively. The UV photoresponse was a result of electron transition from the valence band to the conduction band, while the green laser photoresponse was dependent on oxygen pressure, ambient temperature and defect levels.

Original language	English
Article number	285502
Journal	Nanotechnology
Volume	18
Issue number	28
DOIs	https://doi.org/10.1088/0957-4484/18/28/285502
Publication status	Published - 18 Jul 2007

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Chen, Y., Zhu, C., Cao, M., & Wang, T. (2007). Photoresponse of SnO₂ nanobelts grown in situ on interdigital electrodes. Nanotechnology, 18(28), Article 285502. https://doi.org/10.1088/0957-4484/18/28/285502

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AB - The photoresponses of SnO2 nanobelts grown in situ among interdigital electrodes on silicon substrates were investigated under ultraviolet (UV) light and green laser illumination. The current increased to ∼140 nA in vacuum under green laser irradiation with a power of 35.1 mW. Under UV illumination, however, the source-drain current increased to ∼80 μA in air and up to ∼900 μA in vacuum, respectively. The UV photoresponse was a result of electron transition from the valence band to the conduction band, while the green laser photoresponse was dependent on oxygen pressure, ambient temperature and defect levels.

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Photoresponse of SnO₂ nanobelts grown in situ on interdigital electrodes

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