Electroluminescent devices incorporating a new oxadiazole derivative

Gun-Young Jung; Changsheng Wang; Christopher Pearson; Martin R. Bryce; Ifor D. W. Samuel; Michael C. Petty

doi:10.1117/12.416909

2 February 2001 Electroluminescent devices incorporating a new oxadiazole derivative

Gun-Young Jung, Changsheng Wang, Christopher Pearson, Martin R. Bryce, Ifor D. W. Samuel, Michael C. Petty

Proceedings Volume 4105, Organic Light-Emitting Materials and Devices IV; (2001) https://doi.org/10.1117/12.416909
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Organic bilayer light emitting devices have been constructed using rubrene-doped poly(2-methoxy-5(2'-ethylhexyloxy)-p- phenylenevinylene) (MEH-PPV) as the emissive material and a novel hybrid compound consisting of pyridine and oxadiazole -- 2,5-bis[2-(4-tert-butylphenyl)-1,3,4-oxadiazol-5- yl]pyridine (PDPyDP) -- as an electron transport layer. Although such structures exhibited a higher external quantum efficiency than those in which the electron transport layer was 1,3-bis[2-(4-tert-butylphenyl)-1,3,4-oxadiazol-5- yl]benzene (OXD-7) they degraded relatively quickly, both in storage and under an electrical stress. Considerable improvements in the device lifetimes were obtained by the insertion of a copper phthalocyanine layer between the anode and the MEH-PPV layer and a tris (8-hydroxyquinoline) aluminum (Alq₃) layer between the PDPyDP layer and the Al electrode.

Citation Download Citation

Gun-Young Jung, Changsheng Wang, Christopher Pearson, Martin R. Bryce, Ifor D. W. Samuel, and Michael C. Petty "Electroluminescent devices incorporating a new oxadiazole derivative", Proc. SPIE 4105, Organic Light-Emitting Materials and Devices IV, (2 February 2001); https://doi.org/10.1117/12.416909

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