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 journalArticle

1 Scopus citations

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
StatePublished - 1 May 2010

Keywords

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

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    Syu, W. S., Lin, S. C., Tseng, S. R., Chen, C. Y., Liu, C. Y., Chao, Y. C., Meng, H-F., & Horng, S. F. (2010). Efficient multilayer red fluorescent polymer light-emitting diodes by host and guest blend system. Synthetic Metals, 160(9-10), 871-875. https://doi.org/10.1016/j.synthmet.2010.01.037