کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7128097 | 1461591 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of CTAB concentration on the properties of ZnO nanoparticles produced by laser ablation method in CTAB solution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
ZnO nanoparticles were produced by pulsed laser ablation of a high purity (99.99%) zinc metal target in different concentration of CTAB solution. A Q-switched Nd:YAG laser operating at wavelengths of 1064â¯nm with pulse width of 7â¯ns and 10â¯Hz repetition rate was employed to irradiate the Zn target in CTAB. Produced nanoparticles were characterized using UV-Visible NIR spectrum, X-ray diffraction pattern, SEM and TEM images, DLS measurement and photoluminescence spectrum. Results indicate that higher concentrations of CTAB enhanced the degree of crystallinity in ZnO nanoparticles and diminished the excitonic absorbance of the species. The size of produced nanoparticles also becomes larger with the increasing of CTAB concentration. The emission peaks increased with the increasing of CTAB concentration. All samples exhibited emission peaks in violet region centered on around 430â¯nm (2.88â¯eV) and two other defect emission peaks are seen at 487â¯nm (2.54â¯eV) and 519â¯nm (2.38â¯eV) located in green region. It is indicated that the violet emission could be attributed to interstitial zinc in ZnO nanoparticles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 108, December 2018, Pages 372-377
Journal: Optics & Laser Technology - Volume 108, December 2018, Pages 372-377
نویسندگان
Soheila Abdi, Davoud Dorranian,