Bright up-conversion photoluminescence of Bi4−xErxTi3O12 ferroelectric thin films

Feng Gao, Gangjin Ding, Hong Zhou, Guangheng Wu, Ni Qin, Dinghua Bao
  • Journal of Applied Physics, January 2011, American Institute of Physics
  • DOI: 10.1063/1.3549836