کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8000763 1516276 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photovoltaic enhancement based on improvement of ferroelectric property and band gap in Ti-doped bismuth ferrite thin films
ترجمه فارسی عنوان
افزایش فتوولتائیک بر اساس بهبود ویژگی های فرآیند الکتریکی و شکاف باند در فیلم های نازک فرمال نیکل تیتانیوم
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Ti-doped bismuth ferrite thin films were prepared via sol-gel spin-coating method. The effects of titanium on the microstructure, optical, leakage, ferroelectric and photovoltaic characteristics have been investigated systematically. The result shows that bismuth ferrite thin films doped with 0-8 at.% Ti are rhombohedral distortion perovskite structure. The addition of titanium inhibits the grain growth and enhances the thickness uniformity and can decrease the band gap of bismuth ferrite thin films. The leakage current of bismuth ferrite thin films is effectively reduced by adding a certain amount of titanium and the leakage mechanism has been investigated. Addition of titanium increases the remnant polarization of the films. As titanium content increases, the short circuit photocurrent density decrease first and then increase, while the open circuit photovoltage increase first and then decrease. The power conversion efficiency of Ti-doped bismuth ferrite thin films increases as titanium content increases, which can be explained as a result of the increased remnant polarization and decreased band gap.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 617, 25 December 2014, Pages 240-246
نویسندگان
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