کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9801366 | 1515481 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Long-lasting phosphorescence in Mn2+: Zn2GeO4 crystallites precipitated in transparent GeO2-B2O3-ZnO glass-ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Mn2+-doped GeO2-B2O3-ZnO (GBZ) glasses were investigated and developed as long-lasting phosphorescence host materials. Transparent glass-ceramics were obtained after heat-treated at the first crystallization temperature for 20 min. By X-ray diffraction measurement and SEM observation, it is clarified that Zn2GeO4 crystallites with a diameter of about 1 μm precipitate on the sample's surface after heat-treatment. An orange long-lasting phosphorescence from Mn2+ was observed in the 25GeO2-25B2O3-50ZnO glass matrix, however, a stronger long-lasting green phosphorescence was observed in the phase of Zn2GeO4 crystallites. This phenomenon is considered to be due to the different ligand field environment surrounding Mn2+ ions in the glass and the glass-ceramics. A possible mechanism for the long-lasting phosphorescence in the Mn2+-doped glass was discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science and Technology of Advanced Materials - Volume 6, Issue 5, July 2005, Pages 431-434
Journal: Science and Technology of Advanced Materials - Volume 6, Issue 5, July 2005, Pages 431-434
نویسندگان
Jianbei Qiu, Hajime Igarashi, Akio Makishima,