Optical properties of oligo(9,9-diarylfluorene) derivatives in thin films and their application for organic light-emitting field-effect transistors

Takahito Oyamada, Chih Hao Chang, Teng Cmh Chao, Fu Chuan Fang, Chung Chih Wu, Ken Tsung Wong, Hiroyuki Sasabe, Chihaya Adachi

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

We Demonstrated That Oligo(9,9-diarylfluorene) Derivatives Have High Potential for Optoelectron. Applic. Such as Organ. Lasers and Light-emitting Organ. Fld.-effect Transistors (LE-OFETs). the Oligo(9,9-diarylfluorene) Derivatives Have High Photoluminescence Quant. Efficiencies up to Φ PL ≈ 70-75% and very low amplified spontaneous emission thresholds (Eth) down to 0.5 μJ/cm2 in their vacuum-deposited neat films. In particular, the trimer derivatives (B3 and T3) show higher ΦPL and lower Eth than those of the dimers (B2 and T2). Efficient deep-blue LE-OFETs with the electroluminescence (EL) peaking at λpeak - 429 nm were demonstrated using the ter(9,9-diarylfluorene) as the active layer. Rather high luminance up to L ≈ 150 cd/m2 and EL quantum efficiency up to ηext ≈ 0.60% were achieved with the optimum source-drain channel length, indicating bipolar carrier injection in the terfluorene layer under the FET operation.

Original languageEnglish
Pages (from-to)108-115
Number of pages8
JournalJournal of Physical Chemistry C
Volume111
Issue number1
DOIs
Publication statusPublished - Jan 11 2007

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Field effect transistors
organs
electroluminescence
Organic field effect transistors
field effect transistors
Optical properties
Electroluminescence
Derivatives
optical properties
Thin films
thresholds
carrier injection
thin films
trimers
luminance
spontaneous emission
quantum efficiency
transistors
Spontaneous emission
dimers

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Optical properties of oligo(9,9-diarylfluorene) derivatives in thin films and their application for organic light-emitting field-effect transistors. / Oyamada, Takahito; Chang, Chih Hao; Chao, Teng Cmh; Fang, Fu Chuan; Wu, Chung Chih; Wong, Ken Tsung; Sasabe, Hiroyuki; Adachi, Chihaya.

In: Journal of Physical Chemistry C, Vol. 111, No. 1, 11.01.2007, p. 108-115.

Research output: Contribution to journalArticle

Oyamada, Takahito ; Chang, Chih Hao ; Chao, Teng Cmh ; Fang, Fu Chuan ; Wu, Chung Chih ; Wong, Ken Tsung ; Sasabe, Hiroyuki ; Adachi, Chihaya. / Optical properties of oligo(9,9-diarylfluorene) derivatives in thin films and their application for organic light-emitting field-effect transistors. In: Journal of Physical Chemistry C. 2007 ; Vol. 111, No. 1. pp. 108-115.
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