Communication pubs.acs.org/JACS
Mechanistic Investigation of Photon Upconversion in Nd3+-Sensitized Core−Shell Nanoparticles Xiaoji Xie,† Nengyue Gao,† Renren Deng,† Qiang Sun,† Qing-Hua Xu,† and Xiaogang Liu*,†,‡ †
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602, Singapore
‡
S Supporting Information *
around 800 nm.5,6 However, this design allows only for doping of Nd3+ at very low concentrations (typically
