LAUSR

Abstract KLa(MoO4)2:Yb3+/Ho3+ phosphors were synthesized using hydrothermal method. The phosphors showed intense green (∼546 nm) and weak red emissions (∼651 nm, ∼756 nm) by 980 nm excitation. Temperature-dependent fluorescence intensity ratios (FIRs) are analyzed. The two spark green(5F4 /5S2, I540 nm/I550 nm) and red-green (I641 nm/I540 nm) FIRs were studied at 313 K–503 K. The maximum sensitivity was obtained at 503 K, which is 3.56 % K−1. The results imply that the sensitivity is superior to most of the reported Ho3+ doped materials. KLa(MoO4)2:Yb3+/Ho3+ phosphors could potentially be used to temperature sensor.