• Proceedings of the Korean Magnestics Society Conference
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• 2015.05a
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• pp.120-120
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• 2015

• Bulletin of the Korean Chemical Society
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• v.35 no.6
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• pp.1841-1844
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• 2014

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2004.11a
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• pp.103-103
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• 2004

• Proceedings of the Korean Magnestics Society Conference
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• 2013.12a
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• pp.54-54
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• 2013

• Proceedings of the Korean Magnestics Society Conference
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• 2017.05a
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• pp.56-57
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• 2017

• Proceedings of the Korean Magnestics Society Conference
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• 2017.05a
• /
• pp.93-94
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• 2017

• Proceedings of the Korean Magnestics Society Conference
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• 2005.06a
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• pp.26-26
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• 2005

• Proceedings of the Korean Magnestics Society Conference
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• 2016.05a
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• pp.186-187
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• 2016

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.118-120
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• 2009

We reported that the evidence of oxygen doping to copper-phthalocyanine (CuPc) by $O_2$-plasma treatment to Au electrode of inverted top emitting organic light emitting diodes (ITOLEDs). The operation voltage of OLEDs at 150 mA/$cm^2$ decreased from 16.1 to 10.3 V as oxygen atoms indiffued to CuPc layer using $O_2$-plasma. Synchrotron radiation photoelectron spectroscopy results showed that a new bond of Cu-O appeared and the energy difference between the highest occupied molecular orbital and $E_F$ is lowered by 0.20 eV after plasma treatment. Thus the hole injection barrier was lowered, reducing the turn-on voltage and increasing the quantum efficiency of OLEDs.

• Journal of Powder Materials
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• v.17 no.5
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• pp.390-398
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• 2010

Aqueous gold nanoparticle dispersion was synthesized by chemical reduction method using diethanolamine as reducing agent and polyethyleneimine as dispersion stabilizer. The synthesis conditions for the stable dispersion of the gold nanoparticle suspension were determined by changing the amount of the reducing agent and dispersant during the wet chemical synthesis procedures. The face centered cubic lattice structure of the gold nanoparticles was confirmed by using X-ray diffraction and the morphologies of the nanoparticles were observed by transmission electron microscope. The synthesized gold nanoparticle dispersion was concentrated by evaporating the dispersion medium at room temperature followed by the addition of ethyleneglycol as humectant for the increase of the elastic properties to obtain gold nanoparticle inks for direct ink writing process. The line patterns were obtained with the gold nanoparticle inks during the writing procedures and the morphologies of the fine patterns were observed by scanning electron microscope.