Scheelite(CaWO4)-type microphosphors: Facile synthesis, structural characterization and photoluminescence properties

作者：Han, Yuanyuan^*; Wang, Dan; Liang, Danyang; Wang, Shiqi; Lu, Guoxin; Wang, Xiaoyu; Pei, Nana

来源：Modern Physics Letters B, 2016, 30(32-33): 1650400.

DOI：10.1142/S0217984916504005

• Phosphors
• Ln(3+) doping
• photoluminescence
• CaWO4

Scheelite (CaWO4)-type microphosphors were synthesized by the precipitation method assisted with cetyltrimethyl ammonium bromide (CTAB). All compounds crystallized in the tetragonal structure with space group I41/a (No. 88). FE-SEM micrographs illustrate the spherical-like morphologies and rough surface. PL spectra indicate the broad emission peak maximum at 613 nm under UV excitation. Luminescence decay curves monitored by D-5(6) - F-7(0) transition (lambda(ex) = 394 nm) of Eu3+ in doped CaWO4 are presented, the curves exhibit a single-exponential feature and the lifetime for doped CaWO4 is 0.61 ms.

• 出版日期2016-11-30
• 单位河北大学