کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7849850 | 1508845 | 2016 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tuning the reduction and conductivity of solution-processed graphene oxide by intense pulsed light
ترجمه فارسی عنوان
کاهش و هدایت اکسید گرافن پردازش شده توسط محلول را با نور شدید پالس تنظیم کنید
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
We report about the reduction of spin-coated graphene oxide (GO) layers by intense pulsed light (IPL) treatment. The reduction is achieved in a few seconds resulting in semi-transparent graphene thin films with electrical conductivities up to 6.6 S/cm. In comparison to GO reduction by conventional thermal annealing in an oven, the IPL method is much faster, enabling applications in transparent and flexible polymer substrates. Moreover, this process is roll-to-roll compatible and chemicals-free. The parameters of IPL were optimized in order to tune the conductivity of reduced GO (rGO) films as a function of exposure energy, pulse duration, and number of pulses. The effect of IPL parameters on the morphology and the electrical properties of rGO films were investigated by vis-NIR, X-ray photoelectron, and Raman spectroscopies, as well as scanning electron microscopy, atomic force microscopy, and sheet resistance measurements. The correlation between Raman spectroscopy analysis and sheet resistance shows that the G band width can be used to evaluate the conductivity of the rGO. The IPL, in a time frame of seconds, results in higher conductivity than oven annealing of 30 min at 400 °C, which is also evidenced in the Raman spectra showing the same structural changes as X-ray photoelectron spectroscopy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 102, June 2016, Pages 236-244
Journal: Carbon - Volume 102, June 2016, Pages 236-244
نویسندگان
A. Al-Hamry, H. Kang, E. Sowade, V. Dzhagan, R.D. Rodriguez, C. Müller, D.R.T. Zahn, R.R. Baumann, O. Kanoun,