Voltage tunable photodetecting properties of La0.4Ca0.6MnO3 films grown on miscut LaSrAlO4 substrates
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AbstractWe report the voltage tunable photodetecting properties of a La0.4Ca0.6MnO3 film grown on miscut LaSrAlO4 (001) substrates under ultraviolet pulsed laser irradiation at ambient temperature. The photovoltage and photocurrent peak sensitivities can be tuned in the range of 0.295-0.786 V/mJ and 0.172-0.314 A/mJ, respectively, when the applied bias is changed from -20 to +20 V, indicating that the vicinal manganite film can be used as an electric tunable ultraviolet photodetector. A possible mechanism based on the high resolution transmission electron microscopy is introduced to explain the experiment results. (C) 2010 American Institute of Physics. [doi:10.1063/1.3473781]
All Author(s) ListLi XM, Zhao K, Ni H, Zhao SQ, Xiang WF, Lu ZQ, Yue ZJ, Wang F, Kong YC, Wong HK
Journal nameApplied Physics Letters
Year2010
Month7
Day26
Volume Number97
Issue Number4
PublisherAIP Publishing
ISSN0003-6951
eISSN1077-3118
LanguagesEnglish-United Kingdom
Keywordscalcium compounds; lanthanum compounds; photoconductivity; photodetectors; photoemission; pulsed laser deposition; thin films; transmission electron microscopy
Web of Science Subject CategoriesPhysics; Physics, Applied; PHYSICS, APPLIED

Last updated on 2020-17-09 at 00:55