کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403221 | 1392754 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoluminescence spectra of thin films containing CdSe/ZnS quantum dots irradiated by 532-nm laser radiation and gamma-rays
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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![عکس صفحه اول مقاله: Photoluminescence spectra of thin films containing CdSe/ZnS quantum dots irradiated by 532-nm laser radiation and gamma-rays Photoluminescence spectra of thin films containing CdSe/ZnS quantum dots irradiated by 532-nm laser radiation and gamma-rays](/preview/png/5403221.png)
چکیده انگلیسی
We have investigated temporal behavior of the photoluminescence (PL) spectra of thin films containing CdSe/ZnS quantum dots irradiated by 532 nm laser radiation and gamma-rays. Under â¼100 W/cm2 laser radiation, the PL intensity (IPL) increases with irradiation time upto about 500 s and thereafter declines linearly. The wavelength of the PL emission (λpeak) exhibits a blue-shift with exposure time. Upon simultaneous irradiation by 100 W/cm2 532-nm laser, as well as 0.57 and 1.06 MeV gamma-rays, the temporal behaviors of both IPL and λpeak are significantly different; IPL increases to a saturation level, and the magnitude of the blue-shift in λpeak is reduced. We discuss possible mechanisms underlying these results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 128, Issue 11, November 2008, Pages 1771-1776
Journal: Journal of Luminescence - Volume 128, Issue 11, November 2008, Pages 1771-1776
نویسندگان
Suresh C. Sharma, Jay Murphree, Tonmoy Chakraborty,