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Issue 10, 2011
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6.5% efficient perovskite quantum-dot-sensitized solar cell

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Abstract

Highly efficient quantum-dot-sensitized solar cell is fabricated using ca. 2–3 nm sized perovskite (CH3NH3)PbI3 nanocrystal. Spin-coating of the equimolar mixture of CH3NH3I and PbI2 in γ-butyrolactone solution (perovskite precursor solution) leads to (CH3NH3)PbI3 quantum dots (QDs) on nanocrystalline TiO2 surface. By electrochemical junction with iodide/iodine based redox electrolyte, perovskite QD-sensitized 3.6 μm-thick TiO2 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.

Graphical abstract: 6.5% efficient perovskite quantum-dot-sensitized solar cell

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Supplementary files

Article information


Submitted
19 Jul 2011
Accepted
15 Aug 2011
First published
07 Sep 2011

Nanoscale, 2011,3, 4088-4093
Article type
Communication

6.5% efficient perovskite quantum-dot-sensitized solar cell

J. Im, C. Lee, J. Lee, S. Park and N. Park, Nanoscale, 2011, 3, 4088 DOI: 10.1039/C1NR10867K

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