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TiO<sub>2</sub> Paste에 PEG 첨가에 따른 DSSC의 효율 특성
권성열,양욱,장자항,Kwon, Sung-Yeol,Yang, Wook,Zhang, Zi-Heng 한국전기전자재료학회 2014 전기전자재료학회논문지 Vol.27 No.11
Photo electrode is an important component of DSSC, so this paper did some research on it. Through the method of adding PEG additive into $TiO_2$ paste, the electrical characteristics and efficiencies of DSSCs with photo electrode surface area were studied. In the case of not adding PEG in $TiO_2$ paste, $26{\mu}m$ thickness $TiO_2$ photo electrode shows 5.081% efficiency. The highest short circuit current density was $10.476mA/cm2^$. The structure of porous $TiO_2$ film can be controlled through changing the PEG additive amount in $TiO_2$ paste and the molecular weight of PEG. When the additive amount of PEG 20,000 in $TiO_2$ paste reaches 5%, the peak efficiency with $26{\mu}m$ thickness $TiO_2$ photo electrode was 5.387% and its highest current density were $11.084mA/cm^2$.
TiO2 Paste에 PEG 첨가에 따른 DSSC의 효율 특성
권성열,양 욱,장자항 한국전기전자재료학회 2014 전기전자재료학회논문지 Vol.27 No.11
Photo electrode is an important component of DSSC, so this paper did some research on it. Through the method of adding PEG additive into TiO2 paste, the electrical characteristics and efficienciesof DSSCs with photo electrode surface area were studied. In the case of not adding PEG in TiO2 paste,26 ㎛ thickness TiO2 photo electrode shows 5.081% efficiency. The highest short circuit current densitywas 10.476 mA/cm2. The structure of porous TiO2 film can be controlled through changing the PEGadditive amount in TiO2 paste and the molecular weight of PEG. When the additive amount of PEG20,000 in TiO2 paste reaches 5%, the peak efficiency with 26 ㎛ thickness TiO2 photo electrode was5.387% and its highest current density were 11.084 mA/cm2. 본 실험에서는 PEG의 분자량과 첨가량을 각각 달리하여 제조된 TiO2 paste로 제작된 DSSC의 전기적 특성 및 효율을 측정하고 비교하였다. TiO2 paste 제조 시 PEG 분자량에 따라 첨가량을 5%에서 20%까지 변화시켰을 때, 각 분자량에서 동일하게 첨가량 5%로 제작된 DSSC의 효율이 가장 높게 측정되었다. 또한, 첨가량 5% 시 첨가된 PEG 분자량이 1,000에서 20,000까지 증가함에 따라 효율이 증가됨을 확인하였다. 결과 TiO2 paste에 PEG 20000을 5% 첨가하여 제작된 TiO2 광전극 두께 26 ㎛에서 가장 높은 효율 5.387%을 나타내었다.