KIEE - The Transactions of the Korean Institute of Electrical Engineers

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The Transactions of the Korean Institute of Electrical Engineers

The Transactions of the Korean Institute of Electrical Engineers

ISO Journal TitleTrans. Korean. Inst. Elect. Eng.

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Title	Electrical Properties of Organic light-emitting Diode with Oxygen Plasma Treatment
Authors	김승태(Kim, Seung-Tae) ; 홍진웅(Hong, Jin-Woong)
DOI	https://doi.org/10.5370/KIEE.2013.62.11.1566
Page	pp.1566-1570
ISSN	1975-8359
Keywords	Oxygen plasma treatment ; Organic light-emitting diode ; Basic three layer device ; Cs_2CO_3
Abstract	In this paper, we analyzed the electric characteristics of the OLEDs device of which anode ITO has been treated with the oxygen plasma. We fabricated the basic three-layer structure (ITO / AF / Alq_3 / Cs_2CO_3 / Al) device, analyzed how the oxygen plasma treatments of the ITO surface affects to the electrical characteristics of OLEDs. We also produced a four-layer structure device (ITO / AF / TPD / Alq_3 / Cs_2CO_3 / Al) with the oxygen plasma treatment. From the comparative analysis to the devices, we confirmed following results. The three-layer structure OLEDs device with oxygen plasma treatment has better characteristics than the device without the treatments; maximum luminance, luminous efficiency, and external quantum efficiency are improved approximately 151 [%], 126 [%], and 175[%], respectively. Also, the electric characteristics of the four-layer structure device with oxygen plasma treatment are improved comparing to the characteristics of the three-layer structure device with oxygen plasma treatment; maximum luminance, luminous efficiency, and external quantum efficiency are improved approximately 144 [%], 115 [%], and 124[%], respectively.

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