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8 results on '"Guo, Qingfeng"'

6. ChemInform Abstract: Color-Tunable Photoluminescence and Energy Transfer Properties of Single-Phase Ba10(PO4)6O:Eu2+, Mn2+ Phosphors.

Author

Guo, Qingfeng, Liao, Libing, Mei, Lefu, and Liu, Haikun

Subjects
*PHOTOLUMINESCENCE, *ENERGY transfer, *PHOSPHORS, *STOICHIOMETRY, *LIGHT emitting diodes, *SOLID state chemistry
Abstract

Single-phase Ba10-x-y (PO4)6O:xEu2+,yMn2+ phosphors are prepared by solid state reaction of stoichiometric mixtures of BaCO3, NH4H2PO4, Eu2O3, and MnCO3 (alumina crucibles, flowing 10% H2/90% N2, 1200 °C, 5 h). [ABSTRACT FROM AUTHOR]

Published
2016
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7. ChemInform Abstract: Crystal Structure, Thermally Stability and Photoluminescence Properties of Novel Sr10(PO4)6O:Eu2+ Phosphors.

Author

Guo, Qingfeng, Liao, Libing, Mei, Lefu, and Liu, Haikun

Subjects
*PHOSPHORS, *CRYSTAL structure, *PHOTOLUMINESCENCE
Abstract

Sr10(PO4)6O:Eu2+x (x = 0.005-0.07) is prepared by solid state reaction of stoichiometric amounts of SrCO3, (NH4)2HPO4, and Eu2O3 in a reducing atmosphere of 5% H2/N2 (alumina crucible, 1300 °C). [ABSTRACT FROM AUTHOR]

Published
2015
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8. ChemInform Abstract: Color-Tunable Photoluminescence Phosphors of Ce3+ and Tb3+ Co-Doped Sr2La8(SiO4)6O2 for UV w-LEDs.

Author

Guo, Qingfeng, Liao, Libing, Mei, Lefu, Liu, Haikun, and Hai, Yun

Subjects
*PERFORMANCE of light emitting diodes, *PHOSPHORS, *SPECTRUM analysis, *SILICON oxide, *LANTHANUM oxide, *PHOTOLUMINESCENCE, *TERBIUM, *ULTRAVIOLET radiation, *STRONTIUM carbonate
Abstract

The title phosphors are prepared by solid state reactions of SrCO3, SiO2, CeO2, La2O3, and Tb4O7 (alumina crucible, flowing 5%H2/95%N2, 1350 °C, 5 h). [ABSTRACT FROM AUTHOR]

Published
2015
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