https://scholars.lib.ntu.edu.tw/handle/123456789/407472
標題: | Cerium-ion-doped yttrium aluminum garnet nanophosphors prepared through sol-gel pyrolysis for luminescent lighting | 作者: | Lu C.-H. Jagannathan R. |
公開日期: | 2002 | 卷: | 80 | 期: | 19 | 起(迄)頁: | 3608-3610 | 來源出版物: | Applied Physics Letters | 摘要: | Luminescent Y3Al5O12: Ce3+ [yttrium aluminum garnet (YAG):Ce3+] nanoceramics (5-50 nm) have been prepared through a facile sol-gel pyrolysis route. A blueshift of about 720 cm-1 in the reflectance spectra near the absorption edge can be observed for YAG:Ce3+ nanoparticles (having an average particle size around 5 nm) with respect to the submicron powders (?0.9 £gm). Furthermore, the scope of application for this important luminescent system can be extended by isostructural substitution with heavier cations such as Ba 2+. This substitution giving rise to an oxygen-vacancy defect complex, that exhibits certain size-sensitive exciton-impurity energy-transfer property in YAG:Ce3+ nanoparticles. ? 2002 American Institute of Physics. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407472 | ISSN: | 00036951 | DOI: | 10.1063/1.1475772 |
顯示於: | 化學工程學系 |
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