The preferred upconversion pathway for the red emission of lanthanide-doped upconverting nanoparticles, NaYF4:Yb3+,Er3+ - Physical Chemistry Chemical Physics (RSC Publishing)
Distinct mechanisms for the upconversion of NaYF4:Yb3+,Er3+ nanoparticles revealed by stimulated emission depletion - Physical Chemistry Chemical Physics (RSC Publishing)
Energy transfer upconversion (ETU) mechanism for the standard... | Download Scientific Diagram
Photon-Upconverting Materials: Advances and Prospects for Various Emerging Applications | IntechOpen
Lanthanide-Doped Upconversion Nanomaterials: Recent Advances and Applications | SpringerLink