Voltage tunable photodetecting properties of La0.4Ca0.6MnO3 films grown on miscut LaSrAlO4 substrates
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香港中文大學研究人員

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摘要We 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]
著者Li XM, Zhao K, Ni H, Zhao SQ, Xiang WF, Lu ZQ, Yue ZJ, Wang F, Kong YC, Wong HK
期刊名稱Applied Physics Letters
出版年份2010
月份7
日期26
卷號97
期次4
出版社AIP Publishing
國際標準期刊號0003-6951
電子國際標準期刊號1077-3118
語言英式英語
關鍵詞calcium compounds; lanthanum compounds; photoconductivity; photodetectors; photoemission; pulsed laser deposition; thin films; transmission electron microscopy
Web of Science 學科類別Physics; Physics, Applied; PHYSICS, APPLIED

上次更新時間 2020-27-11 於 00:29