Abstract
Some white emitting organic light-emitting diodes (LED) have been made by inserting a carrier block layer, diphenyl- p-( t-butylphenyl-1,3,4-oxadiazole (PBD), between a blue emissive ( N- p-methoxylphenyl- N-phenyl)- p-methoxylphenyl-styrylamine (SA) layer and a green emissive 8-hydroxyquinoline aluminium chelate layer or a red emissive laser dye 4-dicyanomethylene-2-methyl-6-( p-dimenthyaminostyryl)-4 H-pyran (DCM)-doped Alq3 layer. The electroluminescent (EL) behaviours of the diodes have been investigated. It is found that the emission colour of the diode varies depending on the thickness of PBD layer in the devices. By choosing the thickness of PBD film, we can obtain near white emitting diodes. The emissions from the triple-layer devices are found be emitted from both SA and Alq3 or Alq3:DCM layers, which are situated in the two sides of PBD, by analysing the spectra of the devices with different thicknesses at different applied voltage.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
