Efficient near-infrared polymer nanocrystal light-emitting diodes

Nir Tessler*, Vlad Medvedev, Miri Kazes, Shi Hai Kan, Uri Banin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1287 Scopus citations

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 ∼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.

Original languageAmerican English
Pages (from-to)1506-1508
Number of pages3
JournalScience
Volume295
Issue number5559
DOIs
StatePublished - 22 Feb 2002
Externally publishedYes

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