Near-Infrared Polymer Light-Emitting Diodes Based on Low-Energy Gap Oligomers Copolymerized into a High-Gap Polymer Host
Journal article, 2013

Near-infrared (NIR) polymer light-emitting diodes (PLEDs) based on a fluorene-dioctyloxyphenylene wide-gap host material copolymerized with a low-gap emitter are presented. Various loadings (1, 2.5, 10, 20 mol%) of the low-gap emitter are studied, with higher loadings leading to decreased efficiencies likely due to aggregation effects. While the 10 mol% loading resulted in almost pure NIR emission (>99.6%), the 1 mol% loading yielded optimum device performance, which is among the best reported to date for a unblended single-layer pure polymer emitter, with an external quantum efficiencies of 0.04% emitting at 909 nm. The high spectral purity of the PLEDs combined with their performance support the methodology of copolymerization as an effective strategy for developing NIR PLEDs.







Timothy Steckler

Chalmers, Chemical and Biological Engineering, Polymer Technology

O. Fenwick

University College London (UCL)

University of Strasbourg

T. Lockwood

University College London (UCL)

Mats Andersson

Chalmers, Chemical and Biological Engineering, Polymer Technology

F. Cacialli

University College London (UCL)

Macromolecular Rapid Communications

1022-1336 (ISSN) 1521-3927 (eISSN)

Vol. 34 12 990-996

Subject Categories

Polymer Technologies



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