A study on the improvement of the dye-sensitized solar cell by the fiber laser transparent conductive electrode scribing technology

Min Kyu Son, Hyunwoong Seo, Inyoung Shin, Jin Kyoung Kim, Jinho Choi, Seok Won Choi, Hee Je Kim

Research output: Contribution to journalArticlepeer-review

Abstract

Dye-sensitized solar cell (DSC) is a promising alternative solar cell to the conventional silicon solar cell due to several advantages. Development of large scale module is necessary to commercialize the DSC in the near future. A scribing technology of the transparent conductive oxide (TCO) is one of the important technologies on the fabrication of DSC module. A quality of the scribed line on the TCO has a decisive effect on the efficiency of DSC module. Among several scribing technologies, the fiber laser is a suitable for scribing the TCO more precisely and accurately because of their own characteristics. In this study, we try to improve the quality of the TCO scribed line by using the fiber laser. Consequently, the operating parameter of fiber laser is optimized to get the TCO scribed line with good quality. And the fiber laser scribing technology of the TCO is applied to the fabrication of the DSC with optimal operating parameter, operating current 3900mA. As a result, the current density and fill factor are improved and the total efficiency is increased because the internal resistances of DSC such as TCO sheet resistance and the resistance concerned to the electron movement in the TiO2 are reduced. This is analyzed by the electrochemistry impedance spectroscopy (EIS) and the equivalent circuit model of the DSC.

Original languageEnglish
Pages (from-to)2218-2224
Number of pages7
JournalTransactions of the Korean Institute of Electrical Engineers
Volume59
Issue number12
Publication statusPublished - Dec 1 2010

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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