Natural SciencesMaterials EngineeringMaterials ScienceOptoelectronicsPolymer ChemistryPolymer MaterialsConducting PolymersConductive PolymersLight-emitting DiodesOptoelectronic DevicesOptoelectronic MaterialsOrganic SemiconductorsCharge InjectionConductive Polymer ElectrodesElectroluminescent MaterialsOrganic Light-emitting DiodesPolymer ElectrodesPolymer Light-emitting DiodesPolymer Semiconductor DevicesQuantum Efficiency
Light-emitting diodes of poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylenevinylene] (MEH-PPV) have been fabricated from sodium sulphonated polystyrene (SSPS) ionomer as an electron-injecting and hole-blocking material and polyaniline doped with camphor sulphonic acid (PANI-CSA) as a polymer anode. The presence of PANI in an ITO/PANI/MEH-PPV/AI device makes little difference to its optical output and quantum efficiency. SSPS shows good electron injection in an ITO/MEH-PPV/SSPS/AI device. When SSPS ionomer is introduced in an ITO/PANI/MEH-PPV/SSPS/A1 device, a larger enhancement in optical output is obtained and its quantum efficiency is also enhanced because of its balanced charge injection. The electroluminescent device associated with SSPS ionomer and PANI is a well-designed structure to improve stability and efficiency. Copyright © 2000 John Wiley & Sons, Ltd.
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Light-emitting diodes based on conjugated polymers
J. H. Burroughes, Donal D. C. Bradley, Adam R. Brown et al. · Nature · 1990 · 11.4K citations
Natural Sciences, Materials Engineering, Materials Science +12