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Optics Letters

Optics Letters


  • Editor: Anthony J. Campilo
  • Vol. 32, Iss. 17 — Sep. 1, 2007
  • pp: 2526–2528

Visible-blind, ultraviolet-sensitive photodetector based on Sr Ti O 3 single crystal

J. Xing, K. Zhao, H. B. Lu, X. Wang, G. Z. Liu, K. J. Jin, M. He, C. C. Wang, and G. Z. Yang  »View Author Affiliations

Optics Letters, Vol. 32, Issue 17, pp. 2526-2528 (2007)

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High-sensitivity and visible-blind ultraviolet (UV) photoconductive detectors based on Sr Ti O 3 single crystal with interdigitated electrodes are reported. The responsivities of photovoltage and photocurrent can reach 2.13 × 10 5 V W and 213 mA W , respectively, at 330 nm at ambient temperature, and the corresponding quantum efficiency η reaches 80.2%. The dark current is lower than 50 pA at 10 V bias, and the UV/visible contrast ratio is about four orders of magnitude with a sharp cutoff at 390 nm . The experimental results demonstrate that Sr Ti O 3 single crystal has potentially wide applications in UV detection.

© 2007 Optical Society of America

OCIS Codes
(040.5160) Detectors : Photodetectors
(040.7190) Detectors : Ultraviolet
(260.5150) Physical optics : Photoconductivity

ToC Category:

Original Manuscript: May 23, 2007
Revised Manuscript: July 17, 2007
Manuscript Accepted: July 30, 2007
Published: August 17, 2007

J. Xing, K. Zhao, H. B. Lu, X. Wang, G. Z. Liu, K. J. Jin, M. He, C. C. Wang, and G. Z. Yang, "Visible-blind, ultraviolet-sensitive photodetector based on SrTiO3 single crystal," Opt. Lett. 32, 2526-2528 (2007)

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