کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1480500 | 1510413 | 2016 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mid-infrared luminescence from Sn-modified PbSe quantum dots in silicate glasses
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Infrared photoluminescence (PL) properties of Sn-modified PbSe quantum dots (QDs) in silicate glass were investigated. The QDs' sizes were controlled by changing the heat treatment temperatures. The longest absorption peak from Sn-modified PbSe QDs was centered at 2590Â nm, and the PL band extended to 2650Â nm. X-ray diffraction peaks indicated that the PbSe QDs formed in the glass matrix although low Sn content resulted in no obvious difference between PbSe QDs and Sn-modified PbSe QDs. Sn was found in QDs that proves the incorporation of Sn into PbSe QDs. The proposed composition of the Sn-modified PbSe QDs was Pb0.92Sn0.08Se with a band gap of ~Â 0.13Â eV; the small amount of Sn changed the energy structure of QDs, narrowed the band-gap, and increased the PL emission wavelength.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 431, 1 January 2016, Pages 93-96
Journal: Journal of Non-Crystalline Solids - Volume 431, 1 January 2016, Pages 93-96
نویسندگان
Jihong Zhang, Chao Liu, Jong Heo,