화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.24, No.5, 847-850, September, 2007
DOI10.1007/s11814-007-0052-4  Export Citation
Energetic surface heterogeneity of nanocrystalline TiO2 films for dye-sensitized solar cells
Jae-Wook Lee, Kyung-Jun Hwang1, Wang-Geun Shim2, Kyung-Hee Park3, Hal-Bon Gu3, and Kyu-Hyuk Kwun†
  • Department of Chemical and Biochemical Engineering, Chosun University, Gwangju 501-759, Korea
  • 1Department of Environmental and Chemical Engineering, Seonam University, Namwon 590-170, Korea
  • 2Faculty of Applied Chemical Engineering, Korea
  • 3Department of Electric Engineering, Chonnam National University, Gwangju 500-757, Korea
E-mail:
Dye sensitized solar cells (DSSCs) have been receiving significant attention because they have many advantages compared to conventional organic solar cells. It has been known that the photovoltaic characteristics of DSSC are highly dependent on the adsorption properties of dyes on TiO2 films. To analyze the surface heterogeneity of TiO2 surfaces, single-phase anatase nanocrystallite titanium films were prepared by sol-gel method using the hydrolysis reaction of titanium tetraisopropoxide under acidic condition and characterized by XRD, FE-SEM and BET analysis. The adsorption energy distribution functions were calculated by the generalized nonlinear regularization method. It was found that the shape and the intensity of the adsorption energy distribution curve determined were highly related with the physical properties (i.e., geometrical heterogeneity) and chemical characteristics (i.e., energetic heterogeneity) of nanocrystalline TiO2 for DSSC.
Keywords:Adsorption Energy Distribution Functions;Dye-sensitized Solar Cell;TiO2 Film
  1. Gratzel M, J. Photochem. Photobiol. C, 4, 145 (2003)
  2. Nazeeruddin MK, Humphry-Baker R, Liska P, Gratzel M, J. Phys. Chem. B, 107(34), 8981 (2003)
  3. Ngamsinlapasathian S, Pavasupree S, Suzuki Y, Yoshikawa S, Sol. Energy Mater. Sol. Cells, 90, 3187 (2006)
  4. Park NG, van de Lagemaat J, Frank AJ, J. Phys. Chem. B, 104(38), 8989 (2000)
  5. Lee JW, Kwang HC, Shim WG, Kim C, Yang KS, Moon H, J. Nanosci. Nanotechnol., 6, 3577 (2006)
  6. Rudzinski W, Everett DH, Adsorption of gases on heterogeneous surfaces, Academic Press, London (1992)
  7. Jaroniec M, Madey R, Physical adsorption on heterogeneous solids, Elsevier, Amsterdam (1988)
  8. Puziy AM, Matynia T, Gawdzik B, Poddubnaya OI, Langmuir, 15(18), 6016 (1999)
  9. Frere M, Zinque M, Berlier K, Jadot R, Adsorption, 4, 239 (1998)
  10. Szombathely MV, Brauer P, Jaroniec MJ, Comput. Chem., 13, 17 (1992)
  11. Roth TM, Weese J, Honerkamp J, Comput. Phys. Commun., 139, 279 (2001)
  12. Lee JW, Hwang KJ, Park DW, Park KH, Shim WG, Kim SC, J. Nanosci. Nanotechnol., (in print, 2007)
  13. Shim WG, Kang HC, Kim C, Kim SC, Lee JW, Lee CJ, Moon H, J. Nanosci. Nanotechnol., 6, 3583 (2006)