کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8013601 | 1517167 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoresponse of KNbO3-AFeO3 (Aâ¯=â¯Bi3+ or La3+) ceramics and its relationship with bandgap narrowing
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Photoresponse of KNbO3-AFeO3 (Aâ¯=â¯Bi3+ or La3+) ceramics and its relationship with bandgap narrowing Photoresponse of KNbO3-AFeO3 (Aâ¯=â¯Bi3+ or La3+) ceramics and its relationship with bandgap narrowing](/preview/png/8013601.png)
چکیده انگلیسی
The crystal structure of (1-x)KNbO3-xBiFeO3 (KNBF) and (1-x)KNbO3-LaFeO3 (KNLF) (where xâ¯=â¯0.00; 0.01; 0.02; 0.04; 0.08; 0.16; 0.32) was evaluated by XRD and Raman spectroscopy. XRD data show the crystal symmetry to evolve from orthorhombic to tetragonal with increasing x. The optical bandgap was found to narrow systematically with increasing x. Raman spectroscopy analysis corroborated long-range polar order in all compositions. The photoresponse of xâ¯=â¯0.32 shows a typical diode-like behaviour, with current and voltage of 0.115â¯ÂµA and 0.075â¯V for KNBF and 0.19â¯ÂµA and 0.035â¯V for KNLF, respectively. To our knowledge these represent the largest values among KNbO3-based ceramics, making them promising for photovoltaic applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 221, 15 June 2018, Pages 326-329
Journal: Materials Letters - Volume 221, 15 June 2018, Pages 326-329
نویسندگان
Carolina Elicker, Cristina Pascual-González, Luciano T. Gularte, Mario L. Moreira, Sergio S. Cava, Antonio Feteira,