کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5025552 | 1470588 | 2017 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Concentration- and temperature-dependent photoluminescence of CsPbBr3 perovskite quantum dots
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The concentration and temperature dependence of photoluminescence (PL) performance was investigated, which indicated that the main emission in CsPbBr3 perovskite quantum dots was related to the band-edge mechanism. As the concentration increased from 0.1 to 10.0Â mol/L at 293Â K, the center of emission band exhibited a regular redshift, as well as the peak intensity increased initially and then declined, which could be attributed to the self-absorption processes. Along with the variation of temperature (273-353Â K), peak wavelength, full width of half maximum (FWHM), and peak intensity of PL spectra presented a corresponding linear changes. In addition, the temperature reversibility revealed that CsPbBr3 QDs were reliable candidates for temperature sensor and optoelectronic devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 139, June 2017, Pages 56-60
Journal: Optik - International Journal for Light and Electron Optics - Volume 139, June 2017, Pages 56-60
نویسندگان
Yu Wang, Yue Yang, Peng Wang, Xue Bai,