机译:
Department of Physics and Institute for Nanophysics and Rare-earth Luminescence,Xiangtan University,Xiangtan 411105,China;
Department of Physics and Institute for Nanophysics and Rare-earth Luminescence,Xiangtan University,Xiangtan 411105,China;
Department of Physics and Institute for Nanophysics and Rare-earth Luminescence,Xiangtan University,Xiangtan 411105,China;
Department of Physics and Institute for Nanophysics and Rare-earth Luminescence,Xiangtan University,Xiangtan 411105,China;