Near-infrared imaging with quantum-dot-sensitized organic photodiodes

Rauch T, Böberl M, Tedde SF, Fürst J, Kovalenko MV, Hesser G, Lemmer U, Heiss W, Hayden O (2009)

Publication Type: Journal article

Publication year: 2009

Journal

Nature Photonics Nature Publishing Group

Book Volume: 3

Pages Range: 332-336

Journal Issue: 6

DOI: 10.1038/nphoton.2009.72

Abstract

Solution-processed photodiodes with infrared sensitivities at wavelengths beyond the bandgap of silicon (corresponding to a wavelength of 1,100nm) would be a significant advance towards cost-effective imaging. Colloidal quantum dots are highly suitable as infrared absorbers for photodetection, but high quantum yields have only been reported with photoconductors. For imaging, photodiodes are required to ensure low-power operation and compatibility to active matrix backplanes. Organic bulk heterojunctions are attractive as solution-processable diodes, but are limited to use in the visible spectrum. Here, we report the fabrication and application of hybrid bulk heterojunction photodiodes containing PbS nanocrystalline quantum dots as sensitizers for near-infrared detection up to 1.8νm, with rectification ratios of 6,000, minimum lifetimes of one year and external quantum efficiencies of up to 51%. By integration of the solution-processed devices on amorphous silicon active matrix backplanes, we demonstrate for the first time near-infrared imaging with organic/inorganic hybrid photodiodes. © 2009 Macmillan Publishers Limited.

Involved external institutions

Christian Doppler Forschungsgesellschaft AT Austria (AT) Johannes Kepler Universität (JKU) Linz AT Austria (AT) Karlsruhe Institute of Technology (KIT) DE Germany (DE)

How to cite

APA:

Rauch, T., Böberl, M., Tedde, S.F., Fürst, J., Kovalenko, M.V., Hesser, G.,... Hayden, O. (2009). Near-infrared imaging with quantum-dot-sensitized organic photodiodes. Nature Photonics, 3(6), 332-336. https://doi.org/10.1038/nphoton.2009.72

MLA:

Rauch, Tobias, et al. "Near-infrared imaging with quantum-dot-sensitized organic photodiodes." Nature Photonics 3.6 (2009): 332-336.

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