Raman temperature measurements of copper phthalocyanine layer of organic light-emitting diode using bandwidth-temperature relationship

Ryota Iwasaki, Masaki Hirose, Yukio Furukawa

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    We have estimated the temperature of a buried copper phthalocyanine (CuPc) layer in an organic light-emitting diode with the glass/indium-tinoxide (ITO)/CuPc/N,N0-di-1-naphthaleyl-N,N0-diphenyl-1,10-biphenyl-4,40-diamine (NPD)/tris(8-quinolinolato)aluminum(III) (Alq3)/LiF-Al structure from the full width at half-maximum (FWHM) of a Raman band at around 1528 cm-1. The FWHMs of the band were measured at temperatures in the range from 25 to 200 C. A linear equation was obtained from the observed data by the least-squares method. We estimated the temperature of the CuPc layer in an operating organic light-emitting diode at current densities from 100 to 1000 mA/cm2 using this relationship. The highest temperature was 148 4 -C at a current density of 1000 mA/cm2.

    Original languageEnglish
    Article number05DC16
    JournalJapanese Journal of Applied Physics
    Volume52
    Issue number5 PART 2
    DOIs
    Publication statusPublished - 2013 May

    Fingerprint

    Organic light emitting diodes (OLED)
    Temperature measurement
    temperature measurement
    light emitting diodes
    bandwidth
    Copper
    Bandwidth
    copper
    Full width at half maximum
    current density
    Current density
    linear equations
    least squares method
    diamines
    Temperature
    temperature
    indium
    Linear equations
    Indium
    aluminum

    ASJC Scopus subject areas

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

    Cite this

    Raman temperature measurements of copper phthalocyanine layer of organic light-emitting diode using bandwidth-temperature relationship. / Iwasaki, Ryota; Hirose, Masaki; Furukawa, Yukio.

    In: Japanese Journal of Applied Physics, Vol. 52, No. 5 PART 2, 05DC16, 05.2013.

    Research output: Contribution to journalArticle

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