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Preparation and properties of PEDOT:PSS films using novel materials with photo-reactive group
권세진,송호준,신교직,최경호,고원건,이상국 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
Optoelectronic devices, such as liquid crystal displays(LCDs), lightemitting diodes (LEDs), solar cells, touch panel displays, lasers, and detectors, have been attracting intense attention due to their strong application in many aspects. In particular, Poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonate) (PEDOT:PSS) with high transparency and superior mechanical flexibility is an excellent material as the transparent electrode. However, the pristine PEDOT:PSS films has a major problem of the low conductivity. In this work, we have tried to improve of conductivity PEDOT:PSS and non-visibility patterned conductivity PEDOT:PSS by using novel materials with photo-reactive group. The conductivity of PEDOT:PSS films was significantly enhanced by the amount of novel materials and the photo-reactivity of novel materials. The properties of the films were investigated through instrument of UV-Vis spectroscopy (UV-Vis), 4-probe measurement, fourier transform infrared spectroscopy (FT-IR).
The effect of new additive for highly conductive PEDOT:PSS films
권세진,안미임,송호준,신교직,최경호,이상국 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
Poly(3,4-ethylenedioxythiophene):poly(styrensulfonate)(PEDOT:PSS) is the most simple conducting polymer. PEDOT:PSS films have high transparency and mechanical flexibility. However, PEDOT:PSS have a problem of low conductivity. In this study, we have tried to improve of low conductivity PEDOT:PSS by using organic acid additive. The conductivity of PEDOT:PSS films was significantly enhanced that the depended on the amount of organic acid and annealing temperature. In the present work, we study about conductivity of PEDOT:PSS by different content of Sulfosuccinic acid(SSA) and durability of PEDOT:PSS by adding the polymer. The properties of the films were analyzed by means of UV-Vis spectroscopy (UV-Vis), 4-probe measurement and atomic force microscopy (AFM).
Characterization of novel material for highly conductive PEDOT:PSS films
권세진,안미임,송호준,신교직,최경호,이상국 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films with high transmittance and flexibility can have important application as the transparent electrode of optoelectronic devices. However, the pristine PEDOT:PSS films has a major problem of the low conductivity for commercial application. To resolve the low conductivity of PEDOT:PSS have been investigated the various methods using materials. In this work, we have tried to improve of low conductivity PEDOT:PSS and non-visibility patterned conductivity PEDOT:PSS by using novel materials with photo-reactive group. The conductivity of PEDOT:PSS films was significantly enhanced depended on the amount of novel materials and the photo-reactive difference of novel materials. The mechanism for the conductivity enhancement of PEDOT:PSS with novel materials is attributed to the phase separation of PSS chain from PEDOT:PSS. The properies of the films were analyzed by means of UV-Vis spectroscopy (UV-Vis), 4-probe measurement, fourier transform infrared spectroscopy (FT-IR) and atomic force microscopy (AFM).
권세진,강주희,송호준,이상국 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
Optoelectronic devices, such as liquid crystal displays(LCDs), light-emitting diodes (LEDs), solar cells, touch panel displays, lasers, and detectors, have been attracting intense attention, due to their strong application in many aspects. In particular, Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) (PEDOT:PSS) with high transparency and superior mechanical flexibility is an excellent material as the transparent electrode. However, the pristine PEDOT:PSS films has a major problem of the low conductivity. In this work, we have tried to improve of low conductivity PEDOT:PSS and non-visibility patterned conductivity PEDOT:PSS by using novel materials with photo-reactive group. The conductivity of PEDOT:PSS films was significantly enhanced depended on the amount of novel materials and the photo-reactive difference of novel materials. The mechanism for the conductivity enhancement of PEDOT:PSS with novel materials is attributed to the phase separation of PSS chain from PEDOT:PSS.
권세진 대한정치학회 2003 大韓政治學會報 Vol.11 No.1
이제까지의 체제전환에 대한 연구는 경제체제를 중심으로 경제분야에 집중되었다. 우리는 사회주의 국가의 체제전환 과정에서 정치와 문화라는 변수가 어떻게 영향을 미쳤는가에 대한 연구가 상대적으로 부족하다. 본 논문은 체제의 개념을 경제체제에서 정치체제와 문화체제까지 확대하여 분석해보고자 하였으며, 특히 동유럽 사회주의 국가와 중국의 체제전환 과정에서 초기조건들을 비교하고 중국의 전통적 문화체제가 중국의 체제전환에 긍정적 요인이었음을 주장하였다.