Efficient ultraviolet-blue polymer light-emitting diodes based on a fluorene-based non-conjugated polymer
- 21 August 2006
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 89 (8)
- https://doi.org/10.1063/1.2336745
Abstract
Efficient UV-blue polymer light-emitting diodes based on a fluorene-based nonconjugated polymer, poly[2,7-(9,9-dihexylfluorene)-alt-4,4′-phenylether] (PFPE), are fabricated. The device with PFPE as emitting layer shows a very narrow ultraviolet-blue electroluminescence emission with a peak at 397nm and a maximal external quantum efficiency of 1.07%. By blending PFPE into poly(N-vinylcarbazole) (PVK), the device performance can be further improved. A maximum external quantum efficiency of 1.81%, with a maximum irradiance power density of 1223μW∕cm2, was reached by using a blend of PVK and PFPE in the weight ratio of 95:5 as emitting layer.Keywords
This publication has 18 references indexed in Scilit:
- Poly(9,9-dialkyl-3,6-dibenzosilole)—a high energy gap host for phosphorescent light emitting devicesChemical Communications, 2005
- Ultraviolet-emitting conjugated polymer poly(9,9′-alkyl-3,6-silafluorene) with a wide band gap of 4.0 eVChemical Communications, 2005
- Highly Efficient UV Organic Light‐Emitting Devices Based on Bi(9,9‐diarylfluorene)sAdvanced Materials, 2005
- A Wide-Bandgap Semiconducting Polymer for Ultraviolet and Blue Light Emitting DiodesMacromolecular Chemistry and Physics, 2003
- High‐Efficiency Polymer Light‐Emitting Diodes with Stable Saturated Red Emission: Use of Carbazole‐Based Copolymer Blends in a Poly(p‐phenylenevinylene) DerivativeAdvanced Materials, 2003
- Room-temperature ultraviolet emission from an organic light-emitting diodeApplied Physics Letters, 2001
- Efficient light-emitting diodes based on a binaphthalene-containing polymerApplied Physics Letters, 1999
- Synthesis and Characterization of a Bipolar Light-Emitting Copolymer Consisting of Tetraphenyldiaminobiphenyl and Bis-Quinoline UnitsChemistry of Materials, 1998
- Room-temperature near-ultraviolet electroluminescence from a linear silicon chainApplied Physics Letters, 1997
- Bright blue electroluminescence from poly(N-vinylcarbazole)Applied Physics Letters, 1993