کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1494622 992914 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Laser induced thermal effect on upconversion luminescence and temperature-dependent upconversion mechanism in Ho3+/Yb3+-codoped Gd2(WO4)3 phosphor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Laser induced thermal effect on upconversion luminescence and temperature-dependent upconversion mechanism in Ho3+/Yb3+-codoped Gd2(WO4)3 phosphor
چکیده انگلیسی


• Gd2(WO4)3:Ho/Yb phosphor was synthesized via co-precipitation route.
• Laser-induced thermal effect on the upconversion was studied in Gd2(WO4)3.
• Time scanning upconversion spectra were detected.
• Temperature-dependent upconversion mechanisms were analyzed.

Sub-micro sized Gd2(WO4)3:Yb3+/Ho3+ phosphor was synthesized via a co-precipitation reaction. The crystal structure and morphology of the phosphor were characterized by XRD and SEM. The time scanning of green and red upconversion emissions displayed that the upconversion luminescent intensities were dependent on the irradiation time and the excitation powder, which was resulted from the thermal effect induced by LD (laser diode) irradiation. The upconversion luminescence of Gd2(WO4)3:Yb3+/Ho3+ phosphor at different sample temperatures was studied. It was found that at room temperature the red and green upconversion emissions were 1.5- and 2-photon processes, respectively. With increasing sample temperature the 2-photon process for the red upconversion emission and 3-photon process for green upconversion emission occurred.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 35, Issue 7, May 2013, Pages 1487–1492
نویسندگان
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