Journal of Materials Science

, Volume 48, Issue 2, pp 906–912 | Cite as

Characteristics of dye-sensitized solar cells with surface-modified multi-walled carbon nanotubes as counter electrodes

  • Hee Jung Choi
  • Hee Hyun Gong
  • Jun-Young Park
  • Sung Chul Hong


A polystyrene-based functional block copolymer is employed as a surface modifier for multi-walled carbon nanotube (MWCNT) paste utilized in the fabrication of a MWCNT counter electrode (CE) in dye-sensitized solar cells (DSSCs). The surface modification of MWCNTs paste improves the dispersibility of MWCNTs, resulting in a facilitated fabrication of electrodes through the screen printing procedure, as evidenced by a lower viscosity and more homogeneous paste, as well as a more uniform MWCNT coating. Upon removing organic compounds from the paste through a thermal treatment procedure, the DSSC with the modified CE exhibits enhanced solar energy conversion efficiency (η) compared with that of the neat MWCNT CE. The behavior stems from an improvement in the overall redox reaction kinetics and the short-circuit current (J sc) of the DSSC. The DSSC also exhibits an improved η value over an extended storage period, which demonstrates a successful combination of processability, performance, and stability of the DSSC achieved by using an optimum amount of surface modifier for MWCNTs.


Block Copolymer Counter Electrode Sheet Resistance Surface Modifier Screen Printing Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2012005345). This research was also supported by the Nuclear R&D program of the Korean Science and Engineering Foundation and the Ministry of Education, Science and Technology.


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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Hee Jung Choi
    • 1
  • Hee Hyun Gong
    • 1
  • Jun-Young Park
    • 2
  • Sung Chul Hong
    • 1
  1. 1.Department of Nano Science and TechnologySejong UniversitySeoulRepublic of Korea
  2. 2.Faculty of Nanotechnology and Advanced Materials EngineeringSejong UniversitySeoulRepublic of Korea

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