Luminescence and temperature-dependent sensitivity of Yb3+/Er3+ doped glass ceramics containing NaGd(MoO4)2 nanocrystals

Abstract

Yb3+/Er3+ doped NaGd(MoO4)2 glass ceramics (GCs) were manufactured by melting quenching and subsequent controllable crystallization method, and the structure, transmissivity, up-conversion luminescence and temperature sensitive characteristics were studied. The results show that NaGd(MoO4)2 nanocrystals are embedded in the precursor glass (PG). The crystallization temperature and soaking time directly affect the crystallinity of the glass. Enhanced up-conversion luminescence in the GC sample is clearly observed. According to thermal coupling emission states, the maximum relative sensitivity (Sr-max) of 1.32 % K−1 and absolute sensitivity (Sa-max) of 1.90 % K−1 between 297 K and 437 K are acquired in the GC700-2h sample. This finding reveals that the obtained GC materials have great potential in optical temperature measurement.