Abstract
The use of a new highly luminescent conjugated polymer as an emissive layer in single and multilayer electroluminescence devices is reported. Poly(m-phenylenevinylene-co-2,5 -dioctyloxy-p-phenylenevinylene) [PmPV-co-DOctOPV] was prepared via a Wittig synthesis reaction. The resulting polymer has a high photoluminescence quantum efficiency in the solid state with an emission spectrum peaked at 506 nm (2.45 eV) in the green. Electroluminescence devices were fabricated with an ITO anode and a MgAg cathode. Three different structures were studied: (i) single layer devices containing only PmPV-co-DOctOPV; (ii) double layer devices with PmPV-co-DOctOPV and an evaporated film of 1,3-bis(4-tert-butylphenyl-1,3,4-oxadiazoyl) phenylene [OXD-7] as an electron transport layer; (iii) triple layer devices containing PmPV-co-DOctOPV, OXD-7 and in addition a polyvinylcarbazole hole transport layer. Electroluminescence external quantum efficiencies for these devices were found to be up to 0.08%, 0.55%, and 1%, respectively, corresponding to luminous efficiencies of ≈0.5, ≈3, and ≈6 lm/W and power efficiencies of 8.5×10−5, 5.9×10−4, and 6.0×10−4 W/W.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 9:33 a.m.) |
Deposited | 1 year, 7 months ago (Feb. 2, 2024, 3:38 p.m.) |
Indexed | 1 year, 3 months ago (May 30, 2024, 12:34 a.m.) |
Issued | 28 years ago (Sept. 1, 1997) |
Published | 28 years ago (Sept. 1, 1997) |
Published Print | 28 years ago (Sept. 1, 1997) |
@article{O_Brien_1997, title={Efficient multilayer electroluminescence devices with poly(m-phenylenevinylene-co-2,5-dioctyloxy-p-phenylenevinylene) as the emissive layer}, volume={82}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.366097}, DOI={10.1063/1.366097}, number={5}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={O’Brien, D. and Bleyer, A. and Lidzey, D. G. and Bradley, D. D. C. and Tsutsui, T.}, year={1997}, month=sep, pages={2662–2670} }