Efficient hybrid inorganic/organic tandem solar cells with tailored recombination contacts
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- 作者：Steve Albrechta ; Bjö ; rn Grootoonkb ; Sebastian Neubertc ; Steffen Rolanda ; Jan Wö ; rdenweberb ; Matthias Meierb ; Rutger Schlatmannc ; Aad Gordijnb ; Dieter Nehera ; neher@uni-potsdam.de" class="auth_mail
- 关键词：Hybrid solar cells ; Tandem solar cells ; Organic solar cells ; Bulk heterojunction ; Efficiency optimization
- 刊名：Solar Energy Materials and Solar Cells
- 出版年：August 2014
- 年：2014
- 卷：127
- 期：Complete
- 页码：157-162
- 全文大小：1326 K
文摘
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7.5% efficient hybrid inorganic/organic tandem solar cells are presented.
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Tandem cells are made of a-Si:H bottom cells and Si-PCPDTBT:PC70BM bulk heterojunction top cells.
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Loss-free recombination contacts are realized with a FF of 70% and a Voc close to the sum of those of the sub-cells.
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Optical and electrical device modeling suggests 12% efficiency when combining a donor with suitable absorption onset.
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Proof-of-principle studies employing light trapping suggest that efficiencies well above 12% can be potentially achieved.