کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1530099 995786 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nano-Ag doping induced changes in optical and electrical behaviour of PVA films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Nano-Ag doping induced changes in optical and electrical behaviour of PVA films
چکیده انگلیسی

Hybrids of nano-Ag and PVA films prepared via sol–gel method have been characterized through XRD, TEM, UV–vis spectroscopy and I–V measurements. The change in optical band gap value and room temperature dc conduction behaviour of undoped and nano-Ag doped PVA films have been studied. The value of optical band gap has been found to be reduced from 4.92 eV (for undoped PVA) to 3.93 eV on doping 1.32% (by wt.) nano-Ag in PVA. This decrease in optical band gap and observed increase in conduction can be correlated to the formation of the charge transfer complexes within the polymer network on dispersing nano-Ag in it. Current–voltage behaviour suggests that Poole–Frenkel mechanism is primarily responsible for the observed conduction for both undoped and nano-Ag doped PVA films.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 176, Issue 7, 25 April 2011, Pages 530–534
نویسندگان
, , ,