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Synthesis and luminescence properties of CaSnO 3 :Bi 3+ blue phosphor and the emission improvement by Li + ion
Author(s) -
Cao Renping,
Zhang Jinlong,
Wang Wudi,
Hu Qianglin,
Li Wensheng,
Ruan Wen,
Ao Hui
Publication year - 2017
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3268
Subject(s) - phosphor , chromaticity , luminescence , ion , analytical chemistry (journal) , doping , materials science , emission intensity , atmospheric temperature range , chemistry , optoelectronics , optics , physics , organic chemistry , chromatography , meteorology
Abstract CaSnO 3 :Bi 3+ 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 to 3 P 1 → 1 S 0 transition of the Bi 3+ ion. The chromaticity coordinate was (0.1786, 0.1665). The optimal Bi 3+ ion concentration was ~0.6 mol% in CaSnO 3 :Bi 3+ phosphor. The emission spectrum of CaSnO 3 :Bi 3+ 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 Bi 3+ ion. The emission intensity of CaSnO 3 :Bi 3+ 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 Bi 3+ ion in CaSnO 3 :Bi 3+ phosphor.