کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6534276 | 1420644 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the origin of band-tails in kesterite
ترجمه فارسی عنوان
در منشاء باند دم در میستریت
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
چکیده انگلیسی
Kesterite Cu2ZnSn(SxSe1âx)4 is an attractive earth-abundant material for low-cost thin film photovoltaics with the capability to achieve power production in the terawatt range and therefore to supply a significant part of the global electricity needs. Despite its advantageous optical and electrical properties for photovoltaic applications, the large band tailing causes voltage losses that limit the efficiency of kesterite-based devices. Here we show that the band-tailing originates mainly from band-gap fluctuations attributable to chemical composition variations at nanoscale; while electrostatic fluctuations play a lesser role. Absorption measurement reveal that the Cu-Zn disorder, always present in kesterite Cu2ZnSn(SxSe1âx)4, is not the main source of the large band tailing. Instead defect clusters having a significant impact on the band-edge energies, e.g. [2CuZnâ+SnZn2+], are proposed as the main origin for the kesterite band tail.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy Materials and Solar Cells - Volume 179, 1 June 2018, Pages 142-151
Journal: Solar Energy Materials and Solar Cells - Volume 179, 1 June 2018, Pages 142-151
نویسندگان
G. Rey, G. Larramona, S. Bourdais, C. Choné, B. Delatouche, A. Jacob, G. Dennler, S. Siebentritt,