Author(s): Tessler N, Medvedev V, Kazes M, Kan S, Banin U
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Abstract Conjugated polymers and indium arsenide-based nanocrystals were used to create near-infrared plastic light-emitting diodes. Emission was tunable from 1 to 1.3 micrometers--a range that effectively covers the short-wavelength telecommunications band--by means of the quantum confinement effects in the nanocrystals. The external efficiency value (photons out divided by electrons in) is approximately 0.5\% (that is, >1\% internal) and is mainly limited by device architecture. The near-infrared emission did not overlap the charge-induced absorption bands of the polymer.
This article was published in Science
and referenced in Journal of Analytical & Bioanalytical Techniques