کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5465894 | 1517974 | 2017 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transparent and highly luminescent dysprosium- doped GdVO4 thin films fabricated by pulsed laser deposition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Transparent, luminescent thin films of Dy3 +-doped GdVO4 were fabricated by pulsed laser deposition technique on quartz substrates. Thin film structure, morphology and optical properties were investigated and discussed in detail. X-ray analysis shows relatively intense reflection peaks confirming that as-deposited films are highly crystalline with strong (200) preferred orientation. Cross-sectional scanning electron microscopy shows relatively dense film with an average thickness of ~ 340 nm. Band gap of Dy3 +-doped GdVO4 thin film, estimated from diffuse reflectance spectrum, is 3.61 eV. Refractive index and extinction coefficient of thin films as a function of wavelength are extracted from ellipsometric spectra. The photoluminescent emission spectra have two dominant bands: one in the yellow (~ 573 nm, 4F9/2 â 6H13/2 transition) followed by the other in the blue (~ 484 nm, 4F9/2 â 6H15/2 transition) region resulting in the emission color placed in the white light region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 638, 30 September 2017, Pages 332-337
Journal: Thin Solid Films - Volume 638, 30 September 2017, Pages 332-337
نویسندگان
Željka AntiÄ, K. Prashanthi, Dragana JovanoviÄ, Kaveh Ahadi, Miroslav D. DramiÄanin, Thomas Thundat,