title: Synthesis and luminescence properties of CaSnO3:Bi3+blue phosphor and the emission improvement by Li+ion.
abstract: CaSnO3:Bi3+blue-emitting phosphor was synthesized using a high-temperature solid-state reaction method in air. The crystal structures and luminescence properties were investigated. A broad emission band peaking at ~448 nm upon excitation at 262 and 308 nm was observed in the range 330-680 nm at room temperature due to3P1→1S0transition of the Bi3+ion. The chromaticity coordinate was (0.1786, 0.1665). The optimal Bi3+ion concentration was ~0.6 mol% in CaSnO3:Bi3+phosphor. The emission spectrum of CaSnO3:Bi3+phosphor showed a blue-shift with increasing temperature from 50 to 300 K due to the influence of temperature on the electron transition of the Bi3+ion. The emission intensity of CaSnO3:Bi3+phosphor may be increased ~1.45 times by co-doping Li+ions as a charge compensator and fluxing agent. The luminescence mechanism is explained by a configurational coordinate diagram of Bi3+ion in CaSnO3:Bi3+phosphor.
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, China.
authors.forename: Renping
authors.initials: R
authors.lastname: Cao
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, China.
authors.forename: Jinlong
authors.initials: J
authors.lastname: Zhang
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, China.
authors.forename: Wudi
authors.initials: W
authors.lastname: Wang
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, China.
authors.forename: Qianglin
authors.initials: Q
authors.lastname: Hu
authors.affiliation: Personnel Office, Jinggangshan University, Ji'an, China.
authors.forename: Wensheng
authors.initials: W
authors.lastname: Li
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Ruan
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Ao
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D003116:Color; D008094:Lithium / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000138:chemical synthesis* / Q000737:chemistry; D008163:Luminescent Measurements
chemical_list: D049408:Luminescent Agents; D008094:Lithium; D001729:Bismuth
keywords: Bi3+ ion; blue-emitting; charge compensation; perovskite; phosphors