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Nano Lett. 2008 Oct;8(10):3488-92. doi: 10.1021/nl802476m. Epub 2008 Aug 26.

Schottky solar cells based on colloidal nanocrystal films.

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  • 1National Renewable Energy Laboratory, Golden, Colorado 80401, USA.


We describe here a simple, all-inorganic metal/NC/metal sandwich photovoltaic (PV) cell that produces an exceptionally large short-circuit photocurrent (>21 mA cm(-2)) by way of a Schottky junction at the negative electrode. The PV cell consists of a PbSe NC film, deposited via layer-by-layer (LbL) dip coating that yields an EQE of 55-65% in the visible and up to 25% in the infrared region of the solar spectrum, with a spectrally corrected AM1.5G power conversion efficiency of 2.1%. This NC device produces one of the largest short-circuit currents of any nanostructured solar cell, without the need for sintering, superlattice order or separate phases for electron and hole transport.

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