期刊
NANO LETTERS
卷 11, 期 2, 页码 661-665出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl1037787
关键词
photovoltaics; thin-film silicon solar cells; micromorph tandem junction; nanoimprinting; light trapping
类别
资金
- Swiss Federal Energy Office
- Swiss National Science Foundation [101191, 200021 12577/1]
We demonstrate high-efficiency thin-film silicon solar cells with transparent nanotextured front electrodes fabricated via ultraviolet nanoimprint lithography on glass substrates. By replicating the morphology of state-of-the-art nanotextured zinc oxide front electrodes known for their exceptional light trapping properties, conversion efficiencies of up to 12.0% are achieved for micromorph tandem junction cells.-Excellent light incoupling results in a remarkable summed short-circuit current density of 25.9 mA/cm(2) for amorphous top cell and microcrystalline bottom cell thicknesses of only 250 and 1100 nm, respectively. As efforts to maximize light harvesting continue, our study validates nanoimprinting as a versatile tool to investigate nanophotonic effects of a large variety of nanostructures directly on device performance
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