کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5397839 | 1505875 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical absorption and photoluminescence properties of chromium in different host glasses
ترجمه فارسی عنوان
خواص نوری جذب و فوتولومینسانس کروم در عینک های مختلف میزبان
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کلمات کلیدی
کروم، طیف سنجی، عینک فسفات عینک آلومینیوم، میدان کریستال، پایه نوری،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
The optical absorption, excitation and fluorescence spectra, and emission lifetimes of chromium (III) were investigated in a wide variety of oxide glasses (aluminosilicate, aluminate and phosphate). For all glasses, weak crystal field strengths were deduced from the absorption spectra. The effect of the glass matrix and the Cr3+ concentration on the fluorescence properties of Cr3+ ions were investigated. An increased fluorescence intensity of Cr3+was found for glasses of low optical basicity, the spectral position of the Cr3+ absorption and emission, however, was hardly influenced by the glass composition. The optical absorption spectra of the chromium doped aluminosilicate and aluminate glasses showed the presence of CrVI, while in phosphate glasses most chromium occurred as Cr3+ ions. Furthermore, for the glass with the lowest basicity, the Cr3+concentration was optimized in order to achieve maximum fluorescence emission intensity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 186, June 2017, Pages 152-157
Journal: Journal of Luminescence - Volume 186, June 2017, Pages 152-157
نویسندگان
R. Lachheb, A. Herrmann, K. Damak, C. Rüssel, R. Maâlej,