کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8012752 | 1517162 | 2018 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sol-gel synthesis and up-conversion luminescence of GdPO4-Gd3PO7:Yb3+, Ln3+ (Lnâ¯=â¯Er, Ho, Tm) phosphor
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This work reports the structural, morphological and luminescent properties of GdPO4-Gd3PO7:Yb3+, Ln3+ (Lnâ¯=â¯Er, Ho, Tm) phosphors which have been synthesized by Pechini sol-gel process. The XRD patterns indicated that all the samples are crystalline and have a mixture of monoclinic monazite and monoclinic phases. Some samples were synthesized with ammonium hydroxide (NH4OH) and had better crystallinity than these synthesized without NH4OH. The up-conversion emissions were obtained under excitation at 967â¯nm. According to our results, the color emission was tuned from red to green by increasing the Yb3+ concentration from 5â¯mol% to 20â¯mol%. Moreover, the use of NH4OH to synthesize the samples doped with 20â¯mol% of Yb3+ enhanced their green emission band â3 times. The results reveal that doping the GdPO4-Gd3PO7 particles with rare earths produce an up-conversion emission which can be useful for the fabrication of luminescent coatings or lighting devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 226, 1 September 2018, Pages 34-37
Journal: Materials Letters - Volume 226, 1 September 2018, Pages 34-37
نویسندگان
A. Rosas Camacho, F. de J. Carrillo Romo, A. GarcÃa Murillo, J. Oliva, C.R. GarcÃa,