期刊
THIN SOLID FILMS
卷 487, 期 1-2, 页码 162-169出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2005.01.058
关键词
amorphous silicon; nanocrystalline silicon; solar cells; multi-junction solar cells
The status of multi-junction solar cells using amorphous silicon and amorphous silicon germanium alloys is discussed vis-a-vis those using nanocrystalline silicon alloy in the bottom cell. We have achieved an initial active area (0,25 cm(2)) efficiency of 14.6% for a-Si:H/aSiGe:H/a-SiGe:H cells and have built a roll-to-roll continuous deposition production plant with an annual capacity of 30 MW using this structure. We have also explored using nanocrystalline silicon (nc-Si:H) as the bottom cell of the triple-junction structure. Using hydrogen profiling for the optimization of the bottom cell and appropriate current matching of the component cells. we have achieved an initial active area efficiency of 14.6% using a-Si:H/a-SiGe:H/nc-Si:H structure. (C) 2005 Elsevier B.V. All rights reserved.
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