Photoluminescence Characteristics of Y3Al5O12:Ce3+ Phosphors Synthesized Using the Combustion Method with Various Reagents
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概要
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Ce-doped yttrium aluminum garnet (YAG; Y3Al5O12) phosphor powders were synthesized using the combustion method. The luminescence, formation process, and structure of the phosphor powders were investigated by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and photoluminescence (PL) spectroscopy. The XRD patterns show that the YAG phase can be produced with this method by sintering at 1000 °C for 2 h. This temperature is much lower than that required to synthesize the YAG phase using the conventional solid-state reaction method. No intermediate phases such as yttrium aluminum perovskite (YAP; YAlO3) or yttrium aluminum monoclinic (YAM; Y4Al2O9) were observed as a result of the sintering process. The powders were found to absorb excitation energies in the range of 410–510 nm. Furthermore, the crystalline YAG:Ce powder phosphor produced broad emission peaks in the range of 480–600 nm with the maximum intensity at 528 nm.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2007-12-15
著者
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Kim Kyung-hwan
Department Of Electrical And Information Engineering Kyungwon University
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Lee Seung-kyu
Department Of Orthopaedic Surgery Inha University Medical College
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Choi Hyung-Wook
Department of Electrical Engineering, Kyungwon University, San 65, Bokjung-dong, Sujung-gu, Seangnam, Gyeonggi-do 461-701, Republic of Korea
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Park Sang-Joon
Department of Chemical and Bio Engineering, Kyungwon University, San 65, Bokjung-dong, Sujung-gu, Seangnam, Gyeonggi-do 461-701, Republic of Korea
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Yoon Hyun-Hee
Department of Chemical and Bio Engineering, Kyungwon University, San 65, Bokjung-dong, Sujung-gu, Seangnam, Gyeonggi-do 461-701, Republic of Korea
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Kim Kyung-Hwan
Department of Electrical Engineering, Kyungwon University, San 65, Bokjung-dong, Sujung-gu, Seangnam, Gyeonggi-do 461-701, Republic of Korea
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Lee Seung-kyu
Department of Electrical Engineering, Kyungwon University, San 65, Bokjung-dong, Sujung-gu, Seangnam, Gyeonggi-do 461-701, Republic of Korea
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Kim Kyung-Hwan
Department of Cardiovascular Thoracic Surgery, Seoul National University College of Medicine, Seoul National University Hospital
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