作者
FM Nirwan, TK Gundu Rao, PK Gupta, RB Pode
发表日期
2003/8
期刊
physica status solidi (a)
卷号
198
期号
2
页码范围
447-456
出版商
WILEY‐VCH Verlag
简介
Doubly doped YVO4:Pb2+, Eu3+ red phosphor materials with fixed Eu3+ concentration (5 mol%) and varying Pb2+ concentration were prepared via a self‐propagating (combustion) synthesis. This consisted of bringing a saturated aqueous solution of the desired metal salts and a suitable organic fuel to the boil, until the mixture ignited and a self‐sustaining and rather fast combustion reaction initiated, resulting in dry, amorphous or usually crystalline fine particles of the desired material. The formation of crystalline vanadates was confirmed by X‐ray diffraction. A strong emission line at 619 nm due to the 5D07F2 transition in the red region was observed. Defects, created by gamma radiation, were studied by means of photoluminescence, thermally stimulated luminescence (TSL) and electron spin resonance. Photoluminescence studies display considerable reduction in emission intensity which appears to arise …
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FM Nirwan, TK Gundu Rao, PK Gupta, RB Pode - physica status solidi (a), 2003