پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 158 |
| تعداد شماره‌ها | 6,228 |
| تعداد مقالات | 67,750 |
| تعداد مشاهده مقاله | 115,085,127 |
| تعداد دریافت فایل اصل مقاله | 89,823,637 |
Optical Properties of ZnO Nanowires and Nanorods Synthesized by Two Step Oxidation Process | ||
| Journal of Ultrafine Grained and Nanostructured Materials | ||
| مقاله 3، دوره 46، شماره 1، اسفند 2013، صفحه 19-24 اصل مقاله (498.54 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.7508/jufgnsm.2013.01.003 | ||
| نویسندگان | ||
| Vahid ghafouri* 1؛ Mohsen Shariati1؛ Akbar Ebrahimzad2 | ||
| 1Research Institute of Applied Sciences (ACECR), Shahid Beheshti University, Physics faculty member | ||
| 2Research Institute of Applied Sciences (ACECR), Shahid Beheshti University | ||
| چکیده | ||
| ZnO nanowires with a diameter of 70 nm and nanorods with a diameter in the range of 100-150 nm and two micrometer in length were grown on glass substrates by resistive evaporation method and applying a two step oxidation process at low temperatures, without using any catalyst, template or buffer layer. XRD pattern of these nanostructures indicated a good crystallinity property with wurtzite hexagonal structure. Photoluminescence measurement revealed three band emissions; one sharp strong peak in the UV region and two weaker peaks in the visible region, indicate good optical properties of nanorods synthesized by this method. Heat treatment in oxygen-rich atmosphere results to decrease of deep-level emission intensity in the PL spectra. The relatively high intensity of UV emission implies that this approach is a simple and promising method for fabricating ZnO nanorods in order to be used in optoelectronic devices especially in the UV range of the spectrum. | ||
| کلیدواژه‌ها | ||
| ZnO Nanowires؛ Nanorod؛ Resistive Evaporation؛ oxidation؛ Photoluminescence | ||
|
آمار تعداد مشاهده مقاله: 2,836 تعداد دریافت فایل اصل مقاله: 3,302 |
||