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Nanoscale. 2011 Oct 5;3(10):4088-93. doi: 10.1039/c1nr10867k. Epub 2011 Sep 7.

6.5% efficient perovskite quantum-dot-sensitized solar cell.

Author information

1
School of Chemical Engineering and Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea.

Abstract

Highly efficient quantum-dot-sensitized solar cell is fabricated using ca. 2-3 nm sized perovskite (CH(3)NH(3))PbI(3) nanocrystal. Spin-coating of the equimolar mixture of CH(3)NH(3)I and PbI(2) in γ-butyrolactone solution (perovskite precursor solution) leads to (CH(3)NH(3))PbI(3) quantum dots (QDs) on nanocrystalline TiO(2) surface. By electrochemical junction with iodide/iodine based redox electrolyte, perovskite QD-sensitized 3.6 μm-thick TiO(2) film shows maximum external quantum efficiency (EQE) of 78.6% at 530 nm and solar-to-electrical conversion efficiency of 6.54% at AM 1.5G 1 sun intensity (100 mW cm(-2)), which is by far the highest efficiency among the reported inorganic quantum dot sensitizers.

PMID:
21897986
DOI:
10.1039/c1nr10867k
[Indexed for MEDLINE]

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