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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 19 — Jul. 1, 2009
  • pp: 3638–3642

Employment of a metal microgrid as a front electrode in a sandwich-structured photodetector

Junying Zhang, Chao Cai, Feng Pan, Weichang Hao, Weiwei Zhang, and Tianmin Wang  »View Author Affiliations


Applied Optics, Vol. 48, Issue 19, pp. 3638-3642 (2009)
http://dx.doi.org/10.1364/AO.48.003638


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Abstract

A highly UV-transparent metal microgrid was prepared and employed as the front electrode in a sandwich-structured ultraviolet (UV) photodetector using Ti O 2 thin film as the semiconductor layer. The photo-generated charger carriers travel a shorter distance before reaching the electrodes in comparison with a photodetector using large-spaced interdigitated metal electrodes (where distance between fingers is several to tens of micrometers) on the surface of the semiconductor film. This photodetector responds to UV light irradiation, and the photocurrent intensity increases linearly with the irradiation intensity below 0.2 ‚ÄČ mW/cm 2 .

© 2009 Optical Society of America

OCIS Codes
(040.5160) Detectors : Photodetectors
(120.1880) Instrumentation, measurement, and metrology : Detection
(310.7005) Thin films : Transparent conductive coatings

ToC Category:
Detectors

History
Original Manuscript: December 8, 2008
Revised Manuscript: June 8, 2009
Manuscript Accepted: June 8, 2009
Published: June 22, 2009

Citation
Junying Zhang, Chao Cai, Feng Pan, Weichang Hao, Weiwei Zhang, and Tianmin Wang, "Employment of a metal microgrid as a front electrode in a sandwich-structured photodetector," Appl. Opt. 48, 3638-3642 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-19-3638

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