کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10633018 | 992962 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced ultraviolet sensitivity of zinc oxide nanoparticle photoconductors by surface passivation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Zinc oxide nanoparticles were created by a top-down wet-chemical etching process and then coated with polyvinyl-alcohol (PVA), exhibiting sizes ranging from 10 to 120Â nm with an average size approximately 80Â nm. The PVA layer provides surface passivation of zinc oxide nanoparticles. As a result of PVA coating, enhancement in ultraviolet emission and suppression of parasitic green emission is observed. Photoconductors fabricated using the PVA coated zinc oxide nanoparticles exhibited a ratio of ultraviolet photo-generated current to dark current as high as 4.5Â ÃÂ 104, 5 times better than that of the devices fabricated using uncoated ZnO nanoparticles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 33, Issue 3, January 2011, Pages 359-362
Journal: Optical Materials - Volume 33, Issue 3, January 2011, Pages 359-362
نویسندگان
Liqiao Qin, Christopher Shing, Shayla Sawyer, Partha S. Dutta,