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Transient Photoconductivity in LaRhO Thin Film

  • 1Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031

  • 2University of Science and Technology of China, Hefei 230026

Funds: Supported by the National Key R&D Program of China under Grant Nos 2017YFA0303603 and 2016YFA0401803, the National Natural Science Foundation of China under Grant Nos 11574316, U1532155, 61805256 and U1832106, and the Key Research Program of Frontier Sciences of CAS under Grant No QYZDB-SSW-SLH011.
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  • Received Date: July 22, 2019
  • Published Date: October 31, 2019
    Abstract
  • High-quality epitaxial LaRhO (LRO) thin films on SrTiO (110) single-crystalline substrates are fabricated by pulsed laser deposition and their photoconductivity properties are studied. The transient photoconductivity (TPC) effect is found in this semiconductor LRO film at room temperature. The magnitude of TPC increases almost linearly with the laser power intensities and the photon energies in visible light range. Moreover, the difference in the TPC results under two airflow conditions confirms that both intrinsic photoinduced carrier accumulation and extrinsic photoinduced heating effects contribute to the magnitude of TPC effect.
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