کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5397784 | 1505873 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Blue luminescence from ZnGa2O4: Effect of lattice distortion and particle size
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Dependence of structural and luminescence properties of nano-crystalline ZnGa2O4 phosphors on the synthesis conditions such as concentration of precursor metal ions and nature of solvents were investigated in detail. Based on XRD and luminescence studies carried out on samples prepared with high and low concentrations of precursor metal ions in ethylene glycol medium, it is established that distortion of structural units along with defects/traps in the lattice, and not the particle size, is responsible for the observed blue shift in emission maxima with decrease in precursor concentrations. Unlike this, a red shift is observed when the synthesis is carried out under identical conditions in water medium. This has been explained based on difference in particle size distributions as confirmed by TEM studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 188, August 2017, Pages 429-435
Journal: Journal of Luminescence - Volume 188, August 2017, Pages 429-435
نویسندگان
Chirauri Satya Kamal, Sanyasinaidu Boddu, B. Vishwanadh, K. Ramachandra Rao, V. Sudarsan, R.K. Vatsa,