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An efficient top-emitting electroluminescent device on metal-laminated plastic substrate

Published online by Cambridge University Press:  01 February 2011

L. W. Tan
Affiliation:
Institute of Materials Research and Engineering, No.3 Research Link Singapore, 117602
X. T. Hao
Affiliation:
Institute of Materials Research and Engineering, No.3 Research Link Singapore, 117602
K. S. Ong
Affiliation:
Institute of Materials Research and Engineering, No.3 Research Link Singapore, 117602
Y. Q. Li
Affiliation:
Institute of Materials Research and Engineering, No.3 Research Link Singapore, 117602
F. R. Zhu
Affiliation:
Institute of Materials Research and Engineering, No.3 Research Link Singapore, 117602
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Abstract

An efficient flexible top-emitting organic light-emitting device (OLED) was fabricated on an aluminum-laminated polyethylene terephthalate substrate. A spin-coated light-emitting polymer layer was sandwiched between a silver anode and a multi-layered semitransparent cathode. The performance of polymer OLEDs was analyzed and compared with that of the devices having a conventional structure. An optical microcavity formed in the device enables to tune the emission color by varying the thickness of the active polymer layer. The OLEDs having a 110-nm-thick active polymer layer exhibited superior electroluminescence performance, with a turn-on voltage of 2.5V and a luminance efficiency of 4.56 cd/A at an operating voltage of 10V.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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