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. 2014 Nov 5;4:6879. doi: 10.1038/srep06879

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Solar cells: (a), Doping profile for emitter layer (see Methods). (b), Schematic of ITO-nanolens-embedded Si solar cell. (c), Photo of a fabricated solar cell. (d), Solar cell performances under one-sun illumination. (e–f), Comparison in quantum efficiencies for ITO-nanolens device and flat ITO device.