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Advantages of N-type hydrogenated microcrystalline silicon oxide films for micromorph silicon solar cells
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Document Title
Advantages of N-type hydrogenated microcrystalline silicon oxide films for micromorph silicon solar cells
Author
Limmanee A., Kittisontirak S., Inthisang S., Krajangsang T., Sritharathikhun J., Sriprapha K.
Name from Authors Collection
Affiliations
Solar Energy Technology Laboratory, National Electronics and Computer Technology Center, National Science and Technology Development Agency, Phahonyothin Road, Klong 1, Klong Luang, Pathum Thani 12120, Thailand
Type
Article
Source Title
International Journal of Photoenergy
ISSN
1110662X
Year
2013
Volume
2013
Open Access
All Open Access, Gold, Green
DOI
10.1155/2013/513284
Format
Abstract
We report on the development and application of n-type hydrogenated microcrystalline silicon oxide films (n c-SiO:H) in hydrogenated amorphous silicon oxide/hydrogenated microcrystalline silicon (a-SiO:H/c-Si:H) micromorph solar cells. The n c-SiO:H films with high optical bandgap and low refractive index could be obtained when a ratio of carbon dioxide (CO to silane (SiH flow rate was raised; however, a trade-off against electrical property was observed. We applied the n c-SiO:H films in the top a-SiO:H cell and investigated the changes in cell performance with respect to the electrical and optical properties of the films. It was found that all photovoltaic parameters of the micromorph silicon solar cells using the n top c-SiO:H layer enhanced with increasing the COSiHratio up to 0.23, where the highest initial cell efficiency of 10.7% was achieved. The enhancement of the open circuit voltage (Voc) was likely to be due to a reduction of reverse bias at subcell connection - n top/p bottom interface - and a better tunnel recombination junction contributed to the improvement in the fill factor (FF). Furthermore, the quantum efficiency (QE) results also have demonstrated intermediate-reflector function of the n c-SiO:H films. © 2013 Amornrat Limmanee et al.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
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Rights
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Publication Source
Scopus