Effect of increased surface area of stainless steel substrates on the efficiency of dye-sensitized solar cells

Ho Gyeong Yun, Yongseok Jun, Jongdae Kim, Byeong Soo Bae, Man Gu Kang

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In order to increase the electrical contact area between Ti O2 particles and stainless steel (StSt) substrates of the dye-sensitized solar cells (DSSCs), StSt foil was roughened electrochemically using sulfuric acid with some additives. Compared with the DSSC with nontreated StSt substrate, DSSC with this roughened StSt substrate showed a 33% increase in light-to-electricity conversion efficiency with negligible effect on open circuit voltage (Voc) and fill factor. Electrochemical impedance spectroscopy clearly confirmed that the increased performance was due to a decreased electrical resistance at the Ti O2 /StSt interface.

Original languageEnglish
Article number133311
JournalApplied Physics Letters
Issue number13
Publication statusPublished - 2008 Oct 13
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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