Electroluminescence from multilayer conjugated polymer devices: Spatial control of exciton formation and emission

A. R. Brown, N. C. Greenham, J. H. Burroughes, D. D.C. Bradley, R. H. Friend, P. L. Burn, A. Kraft, A. B. Holmes

Research output: Contribution to journalArticlepeer-review

143 Scopus citations

Abstract

We have constructed electroluminescent diodes using several layers of conjugated polymers with differing band gaps; these provide a range of different colour light-emitting layers and can be used to control charge injection and transport. Poly(1,4-phenylenevinylene, PPV, and derivatives have been used, with indium/tin oxide as hole-injecting layer and calcium as electron-injecting contact layer. For this selection of materials, we show that the ordering of the polymer layers allows control of the colour of device emission. Emission can be produced in more than one layer. © 1992.
Original languageEnglish (US)
JournalChemical Physics Letters
Volume200
Issue number1-2
DOIs
StatePublished - Nov 27 1992
Externally publishedYes

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