| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Ultraviolet Sensitive Ultrafast Photovoltaic Effect in Tilted KTaO3 Single Crystals |
| XING Jie1,2, GUO Er-Jia2, JIN Kui-Juan2, LU Hui-Bin2, HE Meng2, WEN Juan2, YANG Fang2 |
| 1School of Materials Sciences and Technology, China University of Geosciences, Beijing 1000832Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 |
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| Cite this article: |
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XING Jie, GUO Er-Jia, JIN Kui-Juan et al 2010 Chin. Phys. Lett. 27 027202 |
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Abstract An ultraviolet sensitive ultrafast photovoltaic effect is observed in tilted 10° KTaO3 (KT) single crystals. The rise time of the transient photovoltaic pulse is 497.4 ps and the full width at half maximum is 974.6 ps under irradiation of a 266 nm laser pulse with 25 ps duration. An open-circuit photovoltage sensitivity of 328 mV/mJ and a photocurrent sensitivity of 460 mA/mJ are obtained. The experimental results demonstrate the potential applications of KT single crystals in ultraviolet detection.
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| Keywords:
72.40.+w
77.84.Bw
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Received: 12 March 2009
Published: 08 February 2010
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| PACS: |
72.40.+w
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(Photoconduction and photovoltaic effects)
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77.84.Bw
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(Elements, oxides, nitrides, borides, carbides, chalcogenides, etc.)
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