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논문 기본 정보

자료유형
학술저널
저자정보
Choi, Minkyoung (Department of Materials Science and Engineering, University of Seoul) Noh, Yunyoung (Department of Materials Science and Engineering, University of Seoul) Kim, Kwangbae (Department of Materials Science and Engineering, University of Seoul) Song, Ohsung (Department of Materials Science and Engineering, University of Seoul)
저널정보
한국재료학회 한국재료학회지 한국재료학회지 제26권 제4호
발행연도
2016.1
수록면
194 - 199 (6page)

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We prepared polymethyl methacrylate (PMMA) beads with a particle size of 80 nm to improve the energy conversion efficiency (ECE) by increasing the effective surface area and the dye absorption ability of the working electrodes (WEs) in a dye sensitized solar cell (DSSC). We prepared the $TiO_2$ layer with PMMA beads of 0.0~1.0 wt%; then, finally, a DSSC with $0.45cm^2$ active area was obtained. Optical microscopy, transmission electron microscopy, field emission scanning electron microscopy, and atomic force microscopy were used to characterize the microstructure of the $TiO_2$ layer with PMMA. UV-VIS-NIR was used to determine the optical absorbance of the WEs with PMMA. A solar simulator and a potentiostat were used to determine the photovoltaic properties of the PMMA-added DSSC. Analysis of the microstructure showed that pores of 200 nm were formed by the decomposition of PMMA. Also, root mean square values linearly increased as more PMMA was added. The absorbance in the visible light regime was found to increase as the degree of PMMA dispersion increased. The ECE increased from 4.91% to 5.35% when the amount of PMMA beads added was increased from 0.0 to 0.4 wt%. However, the ECE decreased when more than 0.6 wt% of PMMA was added. Thus, adding a proper amount of PMMA to the $TiO_2$ layer was determined to be an effective method for improving the ECE of a DSSC.

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