Noncontact Temperature Measurements of Organic Layers in an Organic Light-Emitting Diode Using Wavenumber–Temperature Relations of Raman Bands
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概要
- 論文の詳細を見る
We have measured the temperatures of the organic layers in operating organic light-emitting diodes (OLEDs) by Raman spectroscopy. The wavenumbers of the Raman bands due to N,N$'$-di-naphthaleyl-N,N$'$-diphenyl-1,1$'$-biphenyl-4,4$'$-diamine (NPD) and copper phthalocyanine (CuPc) have been measured as a function of temperature in the range of 25–191 °C. The observed positions of strong bands around 1607 cm-1 (NPD) and 1531 cm-1 (CuPc) shifted downward linearly with increasing temperature in the ranges lower than 92 and 191 °C, respectively. We have determined the temperatures of the NPD and CuPc layers in an operating OLED from the wavenumber–temperature relations of these bands.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-05-25
著者
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Furukawa Yukio
Department Of Chemistry And Biochemistry School Of Advanced Science And Engineering Waseda Universit
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Sugiyama Takuro
Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo 169-8555, Japan
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Furukawa Yukio
Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo 169-8555, Japan
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