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고효율의 용액공정용 유기 발광 다이오드 제작을 위한 ITO 전처리 연구
최은영,서지현,최학범,제종태,김영관,Choi, Eun-Young,Seo, Ji-Hyun,Choi, Hak-Bum,Je, Jong-Tae,Kim, Young-Kwan 한국전기전자재료학회 2010 전기전자재료학회논문지 Vol.23 No.1
We demonstrated that the solution processed organic light-emitting diodes (OLEDs) have the high efficiency with pre-treated indium-tin-oxide (ITO). ITO surface was pre-treated with four methods and compared each other. The pre-treatment of ITO surface improves the chemical and physical characteristics of ITO such as the surface roughness, adhesion property, and the hole injection ability. These properties were analyzed by the contact angle, atomic force microscope (AFM) image, and the current flow character in device. As a results, the device with ITO pre-treated by $O_2$ plasma shows the current efficiency of 5.93 cd/A, which is 1.5 times the device without pre-treatment.
Listiana Oktavia,정승민,강민경,김한성,이태형,장진보,서홍욱,이정호,한대희,안유진,양창덕,김주현,제종태,손세모,조은아,김상엽,진준오,Peter C.W.Lee,곽민석 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.73 No.-
Pluronic1 triblock copolymers, which spontaneously form nano-sized aggregates in water, have beenconsidered as promising carriers for bioimaging and drug delivery. However, their use for applications inpharmacology and diagnostics is hindered by instability of polymer aggregates which are easilydissociated into unimers. Here we report a general method for stabilizing Pluronic1 F127 micelles viasemi-interpenetrating network (sIPN). The formation of sIPN within a core stabilizes the micelle upontemperature and concentration changes. We determined optimized methods for the preparation of F127sIPN in the regime of chemical components. Importantly, F127 sIPNs are able to load various organicfluorescence probes, covering a panchromatic range of photoluminescence (350–850 nm; entire UV–Vis-NIR), without compromising their photophysical properties. Moreover, efficient cellular uptake of thefluorescence probes loaded sIPN is observed in human and mouse cells. After intravenous injection intomice, an infrared dye-loaded sIPNs are incorporated in multiple organs and have longer lifetime than acommercially available imaging probe. With the improvement of stability, Pluronic micelles with sIPNcan be a powerful tool for building functional nanoprobes and in vivofluorescence imaging for cancercells and live animals.