Voltage tunable photodetecting properties of LaCa MnO films grown on miscut LaSrAlO substrates
Applied Physics Letters, ISSN: 0003-6951, Vol: 97, Issue: 4
2010
- 31Citations
- 12Captures
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Article Description
We report the voltage tunable photodetecting properties of a La CaMnO film grown on miscut LaSrAlO (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. © 2010 American Institute of Physics.
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