physics.optics cond-mat.mes-hall cond-mat.mtrl-sci
Efficient short-wave infrared upconversion by self-sensitized holmium-doped nanoparticles
Rakesh Arul Zhao Jiang Xinjuan Li Fiona M. Bell Alasdair Tew Caterina Ducati Akshay Rao Zhongzheng Yu