کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8148604 | 1524339 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Crystal growth and upconversion luminescent properties of KLu2F7:Yb,Er nanocrystals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Crystal growth of KLu2F7 nanocrystals is investigated by dosage- and time-dependent analysis. XRD patterns reveal the phase transition along with the dosage of fluorine source and reaction times, where the cubic-phase KLu3F10 turns into orthorhombic KLu2F7. TEM images show that the dimensions of as-prepared samples are below a hundred nanometers, with different shapes from hexagonal plate to hexagonal rod. The upconversion properties of the as-prepared samples are investigated. It is found that the upconversion emission is lowered as the shape of the samples varies. Moreover, the orthorhombic KLu2F7:Yb,Er nanocrystals present more enormous upconversion luminescence than the cubic counterparts. In a word, the orthorhombic nanocrystals are found to be good candidate for upconversion luminescence and of great importance for potential applications in solar cells, multicolor display and bioimaging.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 490, 15 May 2018, Pages 41-45
Journal: Journal of Crystal Growth - Volume 490, 15 May 2018, Pages 41-45
نویسندگان
Dekang Xu, Lu Yao, Hao Lin, Shenghong Yang, Yueli Zhang,