کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5465933 | 1517979 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Sn/Zn/Cu precursor stack thickness on two-step processed kesterite solar cells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We have fabricated Cu2ZnSnSe4 (CZTSe) solar cells with different absorber layer thickness. Absorber layers with different thicknesses were fabricated by changing the thickness of e-beam evaporated Sn/Zn/Cu precursor stacks and then selenization in a rapid thermal processing system. Scanning electron microscopy revealed that by increasing the thickness the morphology of CZTSe films improves substantially and energy dispersive spectrometry measurements showed that the Cu to Sn ratio increased with increasing the film thickness, despite a similar Cu to Sn ratio in the starting layers. A longer minority carrier lifetime and higher open circuit voltage were achieved for solar cells with thicker absorber layers. A maximum conversion efficiency of 7.8% (without anti reflection coating) was achieved for a solar cell with 1.7 μm thickness in which a low doping density of the order of 1015 cmâ 3 was measured, leading to a wide space charge region of about 300 nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 633, 1 July 2017, Pages 127-130
Journal: Thin Solid Films - Volume 633, 1 July 2017, Pages 127-130
نویسندگان
Samaneh Ranjbar, Guy Brammertz, Bart Vermang, Afshin Hadipour, M. Sylvester, Aniket Mule, Marc Meuris, A.F. da Cunha, Jef Poortmans,