Efficient multilayer red fluorescent polymer light-emitting diodes by host and guest blend system

Wun Shing Syu, Sheng Chia Lin, Shin Rong Tseng, Chun Yu Chen, Chang Yao Liu, Yu Chiang Chao, Hsin Fei Meng*, Sheng Fu Horng

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    Efficient red light polymer light-emitting diodes are obtained by energy transfer from host and guest blend system. Two kinds of blend systems, SPB02:(10-(2-benzothiazolyl)-1,1,7,7-tetramethyl-2,3,6,7-tetrahydro-1H,5H,11H-[1] benzopyrano [6,7,8-ij]quinolizin-11-one)(C545T):4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) and SuperYellow (SY):poly(3,3′′′-didodecylquaterthiophene) (PQT-12), are used as the active layers. C545T is a green emitter, acting as an assistant dopant to improve the energy transfer from blue SPB02 host to red DCJTB. The efficiency can achieve to 3.3 cd/A for DCJTB and 3.5 cd/A for PQT-12 system by multilayer device structure with 2,2,2′′-(1,3,5-phenylene)-tris(1-phenyl-1H-benzimidazole) (TPBi) as electron transport layer. The SuperYellow:PQT-12 device shows great luminance of 16,930 cd/m2.

    Original languageEnglish
    Pages (from-to)871-875
    Number of pages5
    JournalSynthetic Metals
    Volume160
    Issue number9-10
    DOIs
    Publication statusPublished - 2010 May 1

    Keywords

    • Blade coating
    • Blend
    • Host and guest
    • Multilayer
    • Polymer light-emitting diodes
    • Red light

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

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