کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11006749 | 1509333 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization and microstructure study of Eriochrome black T- Co (II)- PVA composite film for photovoltaic application
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Film of Eriochrome black T (EBT) and CoCl2 doped with polyvinyl alcohol (PVA) was synthesized by casting technique from their solution. X-ray diffraction peaks for EBT indicates a poly-crystalline structure with random grains orientation of orthorhombic type structure. However, crystallinity of the EBT powder was lost completely on complexation in EBT-Co(II)-PVA composite, showing a glassy behavior. The morphology of surface for composite film is rough, showing irregular grains with nanowire of PVA attached to many grains. FT-IR spectroscopy suggested that the geometrical shape of the EBT-Co(II)-PVA complex is 5-coordinate geometrical structure. Differential and thermogravimetric analysis indicated that Co(II)-PVA chains are well coupled within EBT powder. Furthermore, EBT showed a semiconducting like behavior below 300âK while at higher temperature, EBT showed a metallic like behavior with resistivity values lower than that of the EBT-Co(II)-PVA composite film. 1H-NMR and electron spin resonance (ESR) were investigated. A film of structure Au/EBT-CoCl2.6H2O-PVA/Aâ was fabricated and studied for photovoltaic cell applications. High rectification characteristic and photovoltaic parameters were determined from current-voltage curves under dark and illumination. The results supports EBT can be developed for the applications in thermistor material for electronics and solar cells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 245, November 2018, Pages 202-208
Journal: Synthetic Metals - Volume 245, November 2018, Pages 202-208
نویسندگان
Adly H. El-Sayed, A. Abdelhamed, M.S. Masoud, Mahmoud A. Hamad,