Optical Temperature Sensing Behavior of High‐Efficiency Upconversion: Er3+–Yb3+ Co‐Doped NaY(MoO4)2 Phosphor

• DOI: 10.1111/jace.13624
• Publication Date: 2015-05-08T08:07:09Z
• Authors: Xingxing Yang; Zuoling Fu; Yanmin Yang; Chunpeng Zhang; Zhijian Wu; Tianqi Sheng
• Keywords: Photon Upconversion

A class of Yb 3+ /Er co‐doped NaY(MoO 4 ) 2 upconversion ( UC phosphors have been successfully synthesized by a facile hydrothermal route with further calcination. The structural properties and the phase composition samples were characterized X‐ray diffraction XRD ). luminescence investigated in detail. Concentration‐dependent studies revealed that optimal was realized for 2% Er 10% ‐doping concentration. Two‐photon excitation mechanism illustrated green enhancement arised from novel energy‐transfer ET pathway which entailed strong ground‐state absorption ions excited state –MoO 2− dimers, followed an effective energy transfer to high‐energy ions. We also studied thermal emissions between 303 523 K optical thermometry behavior under 980 nm laser diode first time. higher sensitivity temperature measurement could be obtained compared previous reported rare‐earth fluorescence based sensors. These results indicated present sample promising candidate sensors high sensitivity.