کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1481714 991538 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of growth methods for Si/SiO2 nanostructures as nanodot hetero-emitters for photovoltaic applications
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Comparison of growth methods for Si/SiO2 nanostructures as nanodot hetero-emitters for photovoltaic applications
چکیده انگلیسی

Two different growth mechanisms are compared for the fabrication of Si/SiO2 nanostructures on crystalline silicon (c-Si) to be used as hetero-emitter in high-efficiency solar cells: (1) The decomposition of substoichiometric amorphous SiOx (a-SiOx) films with 0 < x < 1.3 and (2) the dewetting of thin amorphous silicon (a-Si) layers.The grown layers are investigated with regard to their structural properties, their passivation quality for c-Si wafer substrates and their electrical properties in order to evaluate their suitability as a nanodot hetero-emitter. While by layer decomposition, no passivating nanodots could be formed, the dewetting process allows fabricating nanodot passivation layers at temperatures as low as 600 °C. The series resistance through Ag/[Si-nanodots in SiO2]/c-Si/Al structures for dewetting is similar to nanostructured silicon rich SiOx films. Still, a nanodot hetero-emitter which exhibits both a satisfying passivation of the substrate and induces a high band bending by doping at the same time could not be fabricated yet.


► We compare two growth mechanisms for the fabrication of Si/SiO2 nanostructures.
► Growth mechanisms are dewetting of SiOx and decomposition of amorphous silicon.
► We compare the structure, passivation and conductivity of the nanostructures.
► No passivation for decomposition, high band bending by doping.
► No dewetting for doped layers, temperature stable passivation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 358, Issue 17, 1 September 2012, Pages 2253–2256
نویسندگان
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