Photoinduced phase transition and relaxation in bare SrTiO3 single crystals

K. X. Jin; B. C. Luo; Y. F. Li; C. L. Chen; T. Wu

doi:10.1063/1.4815950

Photoinduced phase transition and relaxation in bare SrTiO₃ single crystals

K. X. Jin, B. C. Luo, Y. F. Li, C. L. Chen, T. Wu

Physical Sciences and Engineering

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

20 Scopus citations

Abstract

The photoinduced insulator-metal phase transition and relaxation characteristics have been investigated in bare SrTiO₃ single crystals. The photoinduced relaxation time constant after the irradiation shows an increase with increasing temperatures. The SrTiO₃ single crystal has a cutoff wavelength and an absorption edge of spectrum at about 385 nm, which agrees well with the band gap. The photocurrent responsivity is 1.36 × 10^-5 A/W at 300 nm wavelength. The relative change in resistance is more than above six orders at room temperature, possessing potential applications in ultraviolet sensitive and detecting devices.

Original language	English (US)
Article number	033509
Journal	Journal of Applied Physics
Volume	114
Issue number	3
DOIs	https://doi.org/10.1063/1.4815950
State	Published - Jul 21 2013

Bibliographical note

Funding Information:
The authors thank the supports from the National Research Foundation of Singapore (CRP4-2008-04), National Natural Science Foundation of China (Nos. 61078057, 51202195, and 51172183), and NPU Foundation for Fundamental Research (Nos. JC20120246 and JC20110273).

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1063/1.4815950

Cite this

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title = "Photoinduced phase transition and relaxation in bare SrTiO3 single crystals",

abstract = "The photoinduced insulator-metal phase transition and relaxation characteristics have been investigated in bare SrTiO3 single crystals. The photoinduced relaxation time constant after the irradiation shows an increase with increasing temperatures. The SrTiO3 single crystal has a cutoff wavelength and an absorption edge of spectrum at about 385 nm, which agrees well with the band gap. The photocurrent responsivity is 1.36 × 10-5 A/W at 300 nm wavelength. The relative change in resistance is more than above six orders at room temperature, possessing potential applications in ultraviolet sensitive and detecting devices.",

author = "Jin, {K. X.} and Luo, {B. C.} and Li, {Y. F.} and Chen, {C. L.} and T. Wu",

note = "Funding Information: The authors thank the supports from the National Research Foundation of Singapore (CRP4-2008-04), National Natural Science Foundation of China (Nos. 61078057, 51202195, and 51172183), and NPU Foundation for Fundamental Research (Nos. JC20120246 and JC20110273).",

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AU - Jin, K. X.

AU - Luo, B. C.

AU - Li, Y. F.

AU - Chen, C. L.

AU - Wu, T.

N1 - Funding Information: The authors thank the supports from the National Research Foundation of Singapore (CRP4-2008-04), National Natural Science Foundation of China (Nos. 61078057, 51202195, and 51172183), and NPU Foundation for Fundamental Research (Nos. JC20120246 and JC20110273).

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Y1 - 2013/7/21

N2 - The photoinduced insulator-metal phase transition and relaxation characteristics have been investigated in bare SrTiO3 single crystals. The photoinduced relaxation time constant after the irradiation shows an increase with increasing temperatures. The SrTiO3 single crystal has a cutoff wavelength and an absorption edge of spectrum at about 385 nm, which agrees well with the band gap. The photocurrent responsivity is 1.36 × 10-5 A/W at 300 nm wavelength. The relative change in resistance is more than above six orders at room temperature, possessing potential applications in ultraviolet sensitive and detecting devices.

AB - The photoinduced insulator-metal phase transition and relaxation characteristics have been investigated in bare SrTiO3 single crystals. The photoinduced relaxation time constant after the irradiation shows an increase with increasing temperatures. The SrTiO3 single crystal has a cutoff wavelength and an absorption edge of spectrum at about 385 nm, which agrees well with the band gap. The photocurrent responsivity is 1.36 × 10-5 A/W at 300 nm wavelength. The relative change in resistance is more than above six orders at room temperature, possessing potential applications in ultraviolet sensitive and detecting devices.

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