Improving efficiency of dye-sensitized solar cell by micro reflectors

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• 作者：Yong-Woo Kim ; Beom-Soo Kang ; Deug-Woo Lee
• 关键词：Dye ; sensitized solar cell ; Reflector ; Micro structures ; Micro machining
• 刊名：International Journal of Precision Engineering and Manufacturing
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：16
• 期：7
• 页码：1257-1261
• 全文大小：1,535 KB
• 参考文献：1.Ahn, S. H., Chun, D. M., and Chu, W. S., “Perspective to Green Manufacturing and Applications,-Int. J. Precis. Eng. Manuf., vol. 14, no. 6, pp. 873-74, 2013.View Article
  2.Kim, M. S., Chun, D. M., Choi, J. O., Lee, J. C., Kim, K. S., et al., “Room Temperature Deposition of TiO2 using Nano Particle Deposition System (NPDS): Application to Dye-Sensitized Solar Cell (DSSC),-Int. J. Precis. Eng. Manuf., vol. 12, no. 4, pp. 749-52, 2011.View Article
  3.Papageorgiou, N., Athanassov, Y., Armand, M., Bonho, P., Pettersson, H., Azam, A., and Gr?tzel, M., “The Performance and Stability of Ambient Temperature Molten Salts for Solar Cell Applications,-Journal of the Electrochemical Society, vol. 143, no. 10, pp. 3099-108, 1996.View Article
  4.Seo, S., Kim, H. J., Koo, B. K., and Lee, D. Y., “Effects of Non-Noble Metal Current-Collecting Grids on Internal Resistance for Dye-Sensitized Solar Cells,-Journal of The Electrochemical Society, vol. 156, no. 10, pp. F128-F130, 2009.
  5.Tachibana, Y., Haque, S. A., Mercer, I. P., Durrant, J. R., and Klug, D. R., “Electron Injection and Recombination in Dye Sensitized Nanocrystalline Titanium Dioxide Films: A Comparison of Ruthenium Bipyridyl and Porphyrin Sensitizer Dyes,-The Journal of Physical Chemistry B, vol. 104, no. 6, pp. 1198-205, 2000.View Article
  6.Kim, S. W., “Die Machining with Micro Tetrahedron Patterns Array using the Ultra Precision Shaping Machine,-Ph.D. Thesis, Department of Mechanical Engineering, Pusan National University, 2005.
  
• 作者单位：Yong-Woo Kim (1)
  Beom-Soo Kang (2)
  Deug-Woo Lee (3)
  
  1. ERC of Innovative Technology on Advanced Forming, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 609-735, South Korea
  2. Department of Aerospace Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 609-735, South Korea
  3. Department of Nanomechatronics Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 609-735, South Korea
  
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Materials Science
  
• 出版者：Korean Society for Precision Engineering, in co-publication with Springer Verlag GmbH
• ISSN：2005-4602

文摘

Dye-sensitized solar cells (DSSC) are 3rd generation solar cells that have a low manufacturing cost that is 1/3 to 1/5 that of a conventional silicon solar cells, and accordingly, DSSC is currently being developed around the globe. In this study, we investigated a reflector that can recover light that is lost in order to improve the conversion efficiency of DSSCs. The angle of the reflector was determined by using an optical analysis program. Micro pyramid patterns at an angle of 112.6° were fabricated using an ultra-precise shaping machine, and these structures maximize conversion efficiency by increasing the light distance. A comparative study was carried with respect to the conversion efficiency. We build a DSSC attached to a reflector with a mirror angle of 112.6° and measured the conversion efficiency of solar cell by using a solar simulator that can irradiate 100 mW/cm2 (1Sum, AM 1.5). The results of the experiment indicate that the DSSC with the micro pyramid mirror exhibits an efficiency that is about 2% better than that of a DSSC with a black plate. The reflected light can cross more of the dye in the TiO2 Layer. Therefore, the voltage at maximum power (VMP) is greater than that of other reflectors with a different mirror angle.