Microwave synthesis of lamp phosphors

Chris Y. Fang, Dinesh Kumar Agrawal, Joan M. Coveleskie, Chung Nin Chau, James C. Walck

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Lamp phosphors including [Ca10 (PO4)6 (Cl,F):Sb:Mn], (Y,Eu) 2O3, BaMgAl10O17:Eu, and (La,Ce)PO4:Ce:Tb, with or without flux, have been synthesized by a microwave processing technique in a multimode microwave furnace operating at 2.45 GHz. The microwave-synthesized phosphors were comprehensively characterized for particle size, specific surface area, brightness, and luminescence. Although most properties of the microwave-synthesized phosphors were comparable to that of the conventional products, the kinetics of the phosphor synthesis was substantially enhanced in the microwave process. As a result, the soaking time at the peak temperature was reduced by up to 90% compared to a conventional process. In addition, the required synthesis temperature was also lowered by 100-200°C in microwave process, compared to the conventional process for these lamp phosphors. The advantages of microwave process for the lamp phosphor synthesis are obvious.

Original languageEnglish (US)
Title of host publicationProceedings Book - 11th International Conference on Microwave and High Frequency Heating, AMPERE 2007
PublisherUniversity of Oradea
Pages121-124
Number of pages4
ISBN (Electronic)9789737593337
StatePublished - Jan 1 2007
Event11th International Conference on Microwave and High Frequency Heating, AMPERE 2007 - Oradea
Duration: Sep 3 2007Sep 6 2007

Other

Other11th International Conference on Microwave and High Frequency Heating, AMPERE 2007
CityOradea
Period9/3/079/6/07

Fingerprint

phosphors
luminaires
microwaves
synthesis
soaking
furnaces
brightness
luminescence
temperature
kinetics
products

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Fang, C. Y., Agrawal, D. K., Coveleskie, J. M., Chau, C. N., & Walck, J. C. (2007). Microwave synthesis of lamp phosphors. In Proceedings Book - 11th International Conference on Microwave and High Frequency Heating, AMPERE 2007 (pp. 121-124). University of Oradea.
Fang, Chris Y. ; Agrawal, Dinesh Kumar ; Coveleskie, Joan M. ; Chau, Chung Nin ; Walck, James C. / Microwave synthesis of lamp phosphors. Proceedings Book - 11th International Conference on Microwave and High Frequency Heating, AMPERE 2007. University of Oradea, 2007. pp. 121-124
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abstract = "Lamp phosphors including [Ca10 (PO4)6 (Cl,F):Sb:Mn], (Y,Eu) 2O3, BaMgAl10O17:Eu, and (La,Ce)PO4:Ce:Tb, with or without flux, have been synthesized by a microwave processing technique in a multimode microwave furnace operating at 2.45 GHz. The microwave-synthesized phosphors were comprehensively characterized for particle size, specific surface area, brightness, and luminescence. Although most properties of the microwave-synthesized phosphors were comparable to that of the conventional products, the kinetics of the phosphor synthesis was substantially enhanced in the microwave process. As a result, the soaking time at the peak temperature was reduced by up to 90{\%} compared to a conventional process. In addition, the required synthesis temperature was also lowered by 100-200°C in microwave process, compared to the conventional process for these lamp phosphors. The advantages of microwave process for the lamp phosphor synthesis are obvious.",
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Fang, CY, Agrawal, DK, Coveleskie, JM, Chau, CN & Walck, JC 2007, Microwave synthesis of lamp phosphors. in Proceedings Book - 11th International Conference on Microwave and High Frequency Heating, AMPERE 2007. University of Oradea, pp. 121-124, 11th International Conference on Microwave and High Frequency Heating, AMPERE 2007, Oradea, 9/3/07.

Microwave synthesis of lamp phosphors. / Fang, Chris Y.; Agrawal, Dinesh Kumar; Coveleskie, Joan M.; Chau, Chung Nin; Walck, James C.

Proceedings Book - 11th International Conference on Microwave and High Frequency Heating, AMPERE 2007. University of Oradea, 2007. p. 121-124.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - Lamp phosphors including [Ca10 (PO4)6 (Cl,F):Sb:Mn], (Y,Eu) 2O3, BaMgAl10O17:Eu, and (La,Ce)PO4:Ce:Tb, with or without flux, have been synthesized by a microwave processing technique in a multimode microwave furnace operating at 2.45 GHz. The microwave-synthesized phosphors were comprehensively characterized for particle size, specific surface area, brightness, and luminescence. Although most properties of the microwave-synthesized phosphors were comparable to that of the conventional products, the kinetics of the phosphor synthesis was substantially enhanced in the microwave process. As a result, the soaking time at the peak temperature was reduced by up to 90% compared to a conventional process. In addition, the required synthesis temperature was also lowered by 100-200°C in microwave process, compared to the conventional process for these lamp phosphors. The advantages of microwave process for the lamp phosphor synthesis are obvious.

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Fang CY, Agrawal DK, Coveleskie JM, Chau CN, Walck JC. Microwave synthesis of lamp phosphors. In Proceedings Book - 11th International Conference on Microwave and High Frequency Heating, AMPERE 2007. University of Oradea. 2007. p. 121-124