کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8948485 | 1645668 | 2018 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spectroscopic analysis of up conversion luminescence in doped halogeno-antimonite glass
ترجمه فارسی عنوان
تجزیه و تحلیل طیفی از لومنسانس تبدیل تبدیل شده در شیشه هالوژن-آنتونیون دوتایی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
The up-conversion emission of Nd3+, Sm3+ and Er3+ has been studied in a new halogeno-antimonite glass with the chemical composition 80 Sb2O3 - 10 ZnBr2 - 10 KCl. Doping concentration was 0.2â¯mol% of lanthanide (Ln) ions. Rare earths were introduced as fluorides LnF3 that were further converted into oxides. Main physical properties of base glass were measured, including density, thermal expansion, characteristic temperatures, refractive index and optical transmission. The amount of residual hydroxyls was calculated from the OH absorption band around 3000â¯nm. The recorded up-conversion emission lines are λem =â¯536â¯nm for Nd3+ pumped at 805â¯nm; λem =â¯563â¯nm, 600â¯nm, 631â¯nm and 645â¯nm for Sm3+ pumped at 945â¯nm; λem =â¯531â¯nm for Er3+ pumped at 798â¯nm. Co-doped glass (0.1 Yb3+ + 0.1 Er3+) pumped at 980â¯nm has three emission lines at 524â¯nm, 545â¯nm and 650â¯nm. Corresponding transitions have been identified and the mechanisms ruling the up-conversion process is discussed. They include excited state absorption (ESA), energy transfer (ET) cooperative energy transfer (CET), emission assisted by phonon (EAP), multiphonon relaxation (MR) and cross- relaxation (CR).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 15, 15 October 2018, Pages 18060-18066
Journal: Ceramics International - Volume 44, Issue 15, 15 October 2018, Pages 18060-18066
نویسندگان
M. Iezid, F. Goumeidane, A. Abidi, N. Gherraf, M. Legouera, M. Poulain, T. Satyanarayana, P. Syam Prasad, P. Venkateswara Rao,