Ultraviolet photovoltaic effect in tilted orientation LaAlO3 single crystals

Xu Wang, Jie Xing, Kun Zhao, Jie Li, Yanhong Huang, Kui juan Jin, Meng He, Huibin Lu, Guozhen Yang

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13 Scopus citations

Abstract

Pulsed laser-induced photovoltaic effects were observed in the tilted orientation LaAlO3 (LAO) single crystal wafers without any bias at ambient temperature when the LAO wafers were irradiated by the laser pulses of 246 nm ultraviolet (UV) wavelength. The rise time is 13 ns, and the full-width at half-maximum (FWHM) is 25 ns for the open-circuit photovoltage. The sensitivities of the photovoltage and the photocurrent are 270 mV/mJ and 0.91 mA/mJ for the tilting 20° LAO wafer, respectively. The mechanism of the photo-induced photovoltage in LAO wafers is proposed as the combination of a photoelectric process and a Seebeck one.

Original languageEnglish
Pages (from-to)104-106
Number of pages3
JournalPhysica B: Physics of Condensed Matter
Volume392
Issue number1-2
DOIs
StatePublished - Apr 15 2007
Externally publishedYes

Funding

This work is supported by the National Natural Science Foundation of China, and the National Key Basic Research and Development program of China.

FundersFunder number
National Key Basic Research and Development program of China
National Natural Science Foundation of China

    Keywords

    • LaAlO single crystal
    • Photovoltaic effect

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