کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5491726 | 1525122 | 2017 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Promising Cu-doped polyvinyl alcohol films for optical and photoconductive applications
ترجمه فارسی عنوان
پروتئین های الکتریکی پلی اتیلن الکپی برای کاربرد نوری و فتوک هدایی
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کلمات کلیدی
فیلم های پلیمری تکنیک ریخته گری، جذب نوری، فاصله انرژی، عکس هدایت،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
چکیده انگلیسی
Pure and Cu-doped Poly Vinyl Alcohol (PVA) film samples with different concentrations of copper (5%, 10%, 15% and 20% weight percent) were prepared by the conventional castling technique. The structural, optical and photoconductive properties of pure and doped films were studied. X-ray diffraction pattern of the investigated samples reveals the interaction between the filler and polymer which leads to decrease the crystallinity with riching amorphous phase. Optical spectrophotometric measurements showed blocking of UV range in transmission spectra of 20% wt Cu-content where the determined indirect Optical energy gap strongly decrease from 4.96Â eV for pure PVA to about 2.85Â eV for this sample. Film samples exhibit positive photoconduction effect where the light reduce the resistance or increases its conduction in addition to that photosensitivity strongly increase by increasing both light intensity and copper concentration in the polymer matrix.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 527, 15 December 2017, Pages 24-29
Journal: Physica B: Condensed Matter - Volume 527, 15 December 2017, Pages 24-29
نویسندگان
F.M. Ali, I.M. Ashraf, Sh.M. Alqahtani,