• Title/Summary/Keyword: Luminescent properties

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Luminescent Properties of Organic Light Emitting Diode Using $Alq_3$ Complex ($Alq_3$ 유도체를 사용한 유기전기발광소자의 발광 특성)

  • Yang, Ki-Sung;Kim, Doo-Seok;Kim, Byoung-Snag;Shin, Hoon-Kyu;Kim, Chung-Kyun;Kwon, Young-Soo
    • Proceedings of the KIEE Conference
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    • 2004.07c
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    • pp.1703-1705
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    • 2004

  • New luminescent material, 6.11-dihydoxy-5.12-naphtacene-dione $Alq_3$ complex($Alq_2$-Ncd), 1.4-dihydoxy-5.8-naphtaquinone $Alq_3$ complex ($Al_2Nq_4$) was synthesized. The $Alq_2-$ Ncd and $Al_2Nq_4$ has big molecular weight and many ${\pi}$-electrons more than widely known $Alq_3$. And extended efforts have been made to obtain high-performance electro luminescent(EL) devices. We used hole transfer layer of powdered TPD to improve hole transfer and characteristics of interface in OLED. This study indicates not only the sterical effect but also some other effects that would be responsible for the change of the emission wavelength. improvement of luminance and etc.

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Synthesis of SrGa2S4 Phosphor and Its Luminescent Properties (SrGa2S4 형광체의 합성과 발광 특성)

  • Heo, Yeong-Deok;Sim, Jae-Hun;Do, Yeong-Rak
    • Journal of the Korean Chemical Society
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    • v.46 no.2
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    • pp.164-168
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    • 2002

  • SrGa$_2$S$_4$ : Eu is a green emitting phosphor which is applied for field emission display, and cathodoluminescence. Conventionally, SrGa$_2$S$_4$ : Eu is synthesized by solid state reaction, in which a mixture of SrCO$_3$, Ga$_2$O$_3$, and Eu$_2$O$_3$ is fired at high temperatures under flowing H$_2$S and Ar gases. In this study,SrGa$_2$S$_4$ : Eu phosphor is synthesized by using a decomposition method, where SrS, Eu complex, and Ga com-plex are used. The advantage of this method is that toxic H$_2$S gas and Ar gas are not used. The synthetic con-ditions and luminescent properties of SrGa$_2$S$_4$ : Eu phosphor are also investigated.

  • https://doi.org/10.5012/jkcs.2002.46.2.164 인용 PDF KSCI