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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 9 — Apr. 26, 2010
  • pp: 9113–9118

Infrared laser induced lateral photovoltaic effect observed in Cu2O nanoscale film

Liang Du and Hui Wang  »View Author Affiliations


Optics Express, Vol. 18, Issue 9, pp. 9113-9118 (2010)
http://dx.doi.org/10.1364/OE.18.009113


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Abstract

The large infrared lateral photovoltaic effect (LPE) based on semiconductor structures has been a challenge for a long time because the light in this region is hard to be absorbed. In this study, we report an unusual infrared laser induced LPE observed in sputtered Cu2O thin films. The maximum open-circuit lateral photovoltage can reach up to a remarkable value of 30.6mV under irradiation of Ti: Sapphire laser emitting 100 fs pulses at 2000 nm with pulse energy of 50 μJ. Temperature gradient induced by infrared laser is introduced to interpret this infrared induced LPV effect. The high position sensitivity reaching 15.3mV/mm and easier fabrication techniques suggests this oxidized film a potential candidate for the novel infrared photodetectors.

© 2010 OSA

OCIS Codes
(040.5160) Detectors : Photodetectors
(040.5350) Detectors : Photovoltaic
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Detectors

History
Original Manuscript: February 16, 2010
Revised Manuscript: March 22, 2010
Manuscript Accepted: March 31, 2010
Published: April 15, 2010

Citation
Liang Du and Hui Wang, "Infrared laser induced lateral photovoltaic effect observed in Cu2O nanoscale film," Opt. Express 18, 9113-9118 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-9-9113


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