title: Antimony(III)-doped PbWO4 crystals with enhanced photoluminescence via a shape-controlled sonochemical route.
abstract: Sb(III)-doped lead tungstate single crystals with controlled shapes and enhanced green emission have been synthesized via a facile, Pluronic P123 (EO(20)PO(70)EO(20))-assisted, sonochemical method. The surfactant Pluronic P123 was found to play a crucial role in the morphology control of the final products. The growth process was investigated by carefully following time-dependent experiments, and the oriented attachment process accompanying Ostwald ripening was proposed for the possible formation mechanism. The optical properties, such as the Raman spectra and PL spectra, of doped PbWO(4) were studied. Room-temperature photoluminescence of doped PbWO(4) samples with different morphologies at desired Sb doping concentrations showed greatly enhanced luminescence intensity compared to the undoped PbWO(4).
authors.affiliation: Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China.
authors.forename: Jun
authors.initials: J
authors.lastname: Geng
authors.forename: Dujuan
authors.initials: D
authors.lastname: Lu
authors.forename: Jun-Jie
authors.initials: JJ
authors.lastname: Zhu
authors.forename: Hong-Yuan
authors.initials: HY
authors.lastname: Chen