کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5024955 1470583 2017 27 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrical properties and back contact study of CZTS/ZnS heterojunction
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Electrical properties and back contact study of CZTS/ZnS heterojunction
چکیده انگلیسی
In the present work, we have studied the effect of metal back contact nature on the electrical properties of CZTS/ZnS based heterojunction prepared by spray pyrolysis. Three different back contact metals (Al, Au and Ag) were tested as alternative of the commonly used Molybdenum. Structural and optical properties of different layers are characterized. The electrical devices characterization were achieved by (I-V) at ambient and at different temperatures and capacitance-conductance vs frequency (C-G-f) measurements. The realized structures exhibit a rectifying behavior. The ideality factor of all devices were found to be large, it is found equal to 5.9 when using Au contact and equal to 10.5 and 11.4 in heterojunction prepared with Ag and Al back contact respectively. The anomalous ideality factor is due to the Schottky contact between Al, Ag and CZTS and to the presence of density of defect at the interface CZTS/ZnS. The latter was estimated from conductance measurement as a function of frequency and found equal to 1010 cm−2 eV−1. From this study we inferred that Au contact can be an alternative of Mo as back contact of CZTS based solar cell.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 144, September 2017, Pages 180-190
نویسندگان
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