کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1480092 | 1510394 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical, photoluminescence and physical properties of Sm3Â + doped lead alumino phosphate glasses
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Sm3Â + doped lead alumino phosphate glass samples have been synthesized by melt quenching technique. XRD pattern confirm non-crystalline structure of all the synthesized glass samples. These samples were further used to measure some physical and optical properties viz. density, molar volume, optical band gap, refractive index and polarizability. Absorption, excitation and emission spectra of the selected glass samples were obtained using UV-visible and photoluminescence spectrophotometers. A shift in excitation wavelength range to short wavelength region (208Â nm) at high concentration of PbO is observed owing to the energy transfer mechanism from Pb2Â + ion to Sm3Â + ion; which confirm enhanced energy down conversion. In addition to four prominent emission transitions at 565Â nm, 595Â nm, 640Â nm and 709Â nm, one more peak appears at 685Â nm which attributes the transitions from 5D0 to 7F0 in Sm2Â + ion. The high absorption intensity in UV region and strong emission of red light has been observed for all the glass samples. Higher densities for the synthesized glass samples were observed due to presence of lead (82Pb). The glasses have potential application in developing high energy electromagnetic radiation sensors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 452, 15 November 2016, Pages 87-92
Journal: Journal of Non-Crystalline Solids - Volume 452, 15 November 2016, Pages 87-92
نویسندگان
Preet Kaur, Devinder Singh, Tejbir Singh,