کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5460511 | 1516195 | 2017 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sol-gel derived Al-doped zinc oxide - Reduced graphene oxide nanocomposite thin films
ترجمه فارسی عنوان
اکسید روی دی اکسید آلومینیوم سل ژل - فیلم های نازک نانو کامپوزیت گرافن کاهش یافته
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
اکسید روی آلدئید، روند سل ژل، کاهش اکسید گرافین، نانوکامپوزیت، فیلم های نازک
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
Transparent conductive ZnO films doped with 0-6 mol% of Al3+ (or AZO films) and AZO- rGO (rGO - reduced graphene oxide, â¼0-0.5 g/L) nanocomposite films were deposited on silica glass substrates by sol-gel multilayer spin-coating, with annealing at 250 °C in vacuum. The effects of the processing conditions on the structure, optical and electrical properties of the AZO-rGO films, as well as the AZO thin films for comparison, were investigated by XRD, Raman spectroscopy, TEM and SEM, UV-Vis-NIR spectroscopy, and with the four-point prober and Hall effect measurements. Al3+ ions and rGO sheets existed in the composite films, and both of more Al3+ amount and more rGO could result in worse crystallinity of ZnO. More amount of rGO led to more rGO flakers existed in the surface of the AZO-rGO films. Increasing Al-doping amount could not obviously affect the optical transmittances of the AZO-rGO films, but lead to the UV absorption edge of the films slightly blue-shifted. Optical transmittances of the AZO-rGO films decreased obviously with increasing the rGO ratio, but slightly decreased with increasing the annealing time. The minimum sheet resistance Râ¡ could be obtained when Al-doping amount was â¼2 mol% and rGO â¼0.25 g/L: 50.1 kΩ/â¡ for the AZO film and 15.2 kΩ/â¡ for the AZO-rGO film. Addition of rGO could improve the electric conductivity of AZO films. Longer time of vacuum-annealing could also improve the electric conductivity of the AZO-rGO films. For the AZO-rGO film doped with 2 mol% Al3+ and 10 mg rGO after vacuum-annealing for 12 h, Hall mobility was â¼17.7 cm2/Vs and the carrier concentration was â¼10.6 Ã 1019/cm3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 699, 30 March 2017, Pages 79-86
Journal: Journal of Alloys and Compounds - Volume 699, 30 March 2017, Pages 79-86
نویسندگان
Xiayang Yu, Jian Xu, Huanming Lu, Gang Fang,