Submicrometer-sized organic light emitting diodes with a triphenylamine-containing polycarbonate as a guest molecule in a polymer blend

Chihaya Adachi, Seiji Hibino, Toshiki Koyama, Yoshio Taniguchi

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We fabricated submicrometer-sized organic light emitting diodes (OLED) with bright emission using a polymer blend. The cell structure was composed of ITO (indium-tin oxide)/hole transport layer (polymer blend layer)/emitter layer/MgAg. We used poly (methyl methacrylate) (PMMA) as an inert host material and N,N′-diphenyl-N,N′-bis(3-methylphenyl)- [1,1′-biphenyl]-4,4′-diamine-polycarbonate (PC-TPD) as a guest material. The PC-TPD formed submicrometer-sized spherical domains, actually prolate spheroids, in the PMMA host layer. With 2 wt% of PC-TPD, the domain diameters were around 200 nm according to atomic force microscopy (AFM) observation. The OLED including such a blend structure appeared as an array of bright submicrometer-sized electroluminescence spots. The number of working diodes exceeded four million per square centimeter.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume36
Issue number6
Publication statusPublished - Dec 1 1997
Externally publishedYes

Fingerprint

polymer blends
Organic light emitting diodes (OLED)
polycarbonates
Polymer blends
Temperature programmed desorption
Polycarbonates
light emitting diodes
Polymethyl methacrylates
Molecules
polymethyl methacrylate
molecules
Electroluminescence
Tin oxides
prolate spheroids
Indium
Atomic force microscopy
Diodes
diamines
electroluminescence
indium oxides

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Submicrometer-sized organic light emitting diodes with a triphenylamine-containing polycarbonate as a guest molecule in a polymer blend. / Adachi, Chihaya; Hibino, Seiji; Koyama, Toshiki; Taniguchi, Yoshio.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 36, No. 6, 01.12.1997.

Research output: Contribution to journalArticle

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