کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
77696 49295 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterizing amorphous silicon, silicon nitride, and diffused layers in crystalline siliconsolarcellsusingmicro-photoluminescence spectroscopy
ترجمه فارسی عنوان
توصیف سیلیکون آمورف، نیترید سیلیکون و لایه های پخش شده در طیف سنج سیلیکون سلولز سیلیکون میکرو فوتولومینسانس بلوری
کلمات کلیدی
فوتولومینسانس، سیلیکون آمورف، سیلیکون بلورین، سیلیکون پراکنده، نیترید سیلیکون، فتوولتائیک سیلیکون
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• Luminescence spectra from c-Si wafers passivated by a-Si:H films are reported.
• Silicon-rich SiNx films yield luminescence spectra similar to those of a-Si:H.
• Luminescence signatures from SiNx films, diffused layers, and c-Si substrate are separated.
• Parasitic absorption in SiNx and doping density of diffused layers on different c-Si solar cells are evaluated.

We report and explain the photoluminescence (PL) spectra from crystalline silicon (c-Si) wafers passivated by hydrogenated amorphous silicon (a-Si:H) films under various measurement conditions, utilizing the different absorption coefficients and radiative recombination mechanisms in c-Si and a-Si:H. By comparison with the luminescence properties of a-Si:H, we also demonstrate that SiNx films deposited under certain silicon-rich conditions yield luminescence spectra similar to those of a-Si:H, indicating the presence of an a-Si:H-like phase in the SiNx films. This causes a reduction in the blue response of the solar cells via parasitic absorption. In addition, with the ability to detect the specific emission from heavily-doped silicon via band-gap narrowing effects, we can unambiguously separate individual spectral PL signatures of three different layers in a single substrate: the SiNx passivation films, the diffused layers, and the underlying c-Si substrate. Finally, we apply this technique to evaluate parasitic absorption in the passivation films, and the doping density of the diffused layers on different finished solar cells, highlighting the value of this nondestructive contactless, micron-scale technique for photovoltaic applications.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy Materials and Solar Cells - Volume 145, Part 3, February 2016, Pages 403–411
نویسندگان
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