کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403021 | 1392749 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The structure and photoluminescence properties of ZnO nanobelts prepared by a thermal evaporation process
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
ZnO nanobelts had been synthesized by a simple method of thermal evaporation of Zn powders. The morphology, structure and photoluminescence (PL) properties of ZnO nanobelts were studied. The nanobelts had a single-crystal hexagonal structure and grew along the (0Â 0Â 0Â 1) direction with several micrometers long, 50-400Â nm wide and 30-100Â nm thick. Photoluminescence measurement showed that the nanobelts had an intensive near-band ultraviolet emission at about 3.3Â eV. The obtained experimental data suggest that the ultraviolet PL in ZnO nanobelts originates from the recombination of the acceptor-bound excitons and free extions at room temperature. The absence of the deep level emission indicated very low impurity concentration and high crystalline quality in the ZnO nanobelts. Large-area growth and high quality indicate that the prepared ZnO nanobelts have potential application in optoelectronic devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 129, Issue 4, April 2009, Pages 340-343
Journal: Journal of Luminescence - Volume 129, Issue 4, April 2009, Pages 340-343
نویسندگان
S.J. Chen, G.R. Wang, Y.C. Liu,