An ionic terfluorene derivative for saturated deep-blue solid state light-emitting electrochemical cells

Hsiao Fan Chen, Chih Teng Liao, Te Chuan Chen, Hai Ching Su, Ken Tsung Wong, Tzung-Fang Guo

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

In this study, we obtained saturated deep-blue electroluminescence (EL) from solid state light-emitting electrochemical cells (LECs) incorporating the ionic terfluorene derivative 1, which we synthesized through covalent tethering of methylimidazolium moieties as pendent groups of terfluorene. Compound 1 exhibited the deep-blue emission, extremely high quantum yield, and reversible redox behavior that are characteristic of terfluorene derivatives. LEC devices incorporating terfluorene 1 exhibited deep-blue EL with CIE coordinates of (0.159, 0.115) and (0.151, 0.122) in the absence and presence, respectively, of the ionic liquid (IL) BMIM·PF 6 . The peak external quantum efficiency and peak power efficiency of 1 in the presence of the IL reached 1.14% and 1.24 lm W -1 , respectively. These CIE coordinates are the most saturated blue emissions ever reported for LECs.

Original languageEnglish
Pages (from-to)4175-4181
Number of pages7
JournalJournal of Materials Chemistry
Volume21
Issue number12
DOIs
Publication statusPublished - 2011 Mar 28

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Electrochemical cells
Ionic Liquids
Electroluminescence
Derivatives
Ionic liquids
Quantum yield
Quantum efficiency

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

Cite this

Chen, Hsiao Fan ; Liao, Chih Teng ; Chen, Te Chuan ; Su, Hai Ching ; Wong, Ken Tsung ; Guo, Tzung-Fang. / An ionic terfluorene derivative for saturated deep-blue solid state light-emitting electrochemical cells. In: Journal of Materials Chemistry. 2011 ; Vol. 21, No. 12. pp. 4175-4181.
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abstract = "In this study, we obtained saturated deep-blue electroluminescence (EL) from solid state light-emitting electrochemical cells (LECs) incorporating the ionic terfluorene derivative 1, which we synthesized through covalent tethering of methylimidazolium moieties as pendent groups of terfluorene. Compound 1 exhibited the deep-blue emission, extremely high quantum yield, and reversible redox behavior that are characteristic of terfluorene derivatives. LEC devices incorporating terfluorene 1 exhibited deep-blue EL with CIE coordinates of (0.159, 0.115) and (0.151, 0.122) in the absence and presence, respectively, of the ionic liquid (IL) BMIM·PF 6 . The peak external quantum efficiency and peak power efficiency of 1 in the presence of the IL reached 1.14{\%} and 1.24 lm W -1 , respectively. These CIE coordinates are the most saturated blue emissions ever reported for LECs.",
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An ionic terfluorene derivative for saturated deep-blue solid state light-emitting electrochemical cells. / Chen, Hsiao Fan; Liao, Chih Teng; Chen, Te Chuan; Su, Hai Ching; Wong, Ken Tsung; Guo, Tzung-Fang.

In: Journal of Materials Chemistry, Vol. 21, No. 12, 28.03.2011, p. 4175-4181.

Research output: Contribution to journalArticle

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