Flexible top-emitting electroluminescent devices on polyethylene terephthalate substrates

An aluminum-laminated polyethylene terephthalate (Al-PET) is used as the substrate for flexible organic light-emitting devices (OLEDs). The efficient flexible electroluminescent devices have a top-emitting OLED architecture. An acrylic layer is formed on the Al-PET surface to improve the surface mor...

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Bibliographic Details
Published in:Applied physics letters 2005-04, Vol.86 (15), p.153508-153508-3
Main Authors: Li, Yanqing, Tan, Li-Wei, Hao, Xiao-Tao, Ong, Kian Soo, Zhu, Furong, Hung, Liang-Sun
Format: Article
Language:English
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Summary:An aluminum-laminated polyethylene terephthalate (Al-PET) is used as the substrate for flexible organic light-emitting devices (OLEDs). The efficient flexible electroluminescent devices have a top-emitting OLED architecture. An acrylic layer is formed on the Al-PET surface to improve the surface morphology and also the adhesion between the substrate and the anode. Poly(styrene sulfonate)-doped poly(3,4-ethylene dioxythiophene) was used as hole transporting layer. The light-emitting polymer used is a phenyl-substituted poly( p -phenylenevinylene). Bilayer anodes of Ag ∕ C F X and Ag/indium-tin oxide and a semitransparent top cathode were used for the flexible polymer OLEDs. For a flexible polymer OLED with a 110 - nm -thick light-emitting polymer, it exhibited superior electrical and optical characteristics with a luminous efficiency of 4.56 cd ∕ A at an operating voltage of 7.5 V .
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1900940