کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1520632 | 1511786 | 2016 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phosphorescence of CdS nanoparticles in polymer matrix as an indication of host-guest interaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
• Long-lasting low-temperature photoluminescence decay in nano-CdS/PVA is observed.
• Characteristic time about 1.7 s for photoluminescence decay is measured.
• Accumulation of photo-excited carriers in traps within the PVA is shown.
• Transfer of the excitation from PVA to CdS nanoparticles is shown.
We report on the observation of the long-lasting low-temperature photoluminescence decay in the hybrid system nano-CdS/polyvinyl alcohol with a characteristic time of about 1.7 s. The origin of the phosphorescence is ascribed to the accumulation of photo-excited excitons in the traps within the polymeric matrix with subsequent transfer of the excitation to the embedded CdS nanoparticles.
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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 177, 1 July 2016, Pages 379–383
Journal: Materials Chemistry and Physics - Volume 177, 1 July 2016, Pages 379–383
نویسندگان
A.O. Kovalchuk, G.Yu. Rudko, V.I. Fediv, W.M. Chen, I.A. Buyanova,