Basic study for the construction of solar cell using CdS photocatalysts and Na2S4 electrolyte

Takashi Mabuchi, Tsugumi Hayashi, Hideyuki Takahashi, Kazuyuki Tohji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Photoexcited electrons pathway from thin film consisting of semiconductor particles to electrode was tried to develop by using conducting polymers. PEDOT/PSS and polyaniline was selected as transparent conducting polymer material. In the case of the cell consisted by using polyaniline, it was confirmed that conductive emeraldine salt stated polyaniline converted to non-conductive emeraldine base state because of contact with strong basic Na2S4 electrolyte solution. On the other hand, as regards the cell with PEDOT/PSS, it was expected that positive and negative electrode short-circuited and/or Schottky junction was formed between CdS and PEDOT/PSS. The formation of Schottky junction between CdS and PEDOT/PSS was reduced the kinetic energy of the photoexcited electrons to 5.1eV which was the Fermi level of PEDOT. These electrons could not reduce Na2S4 electrolyte solution since oxidation-reduction potential was 4.1eV. As a result, it considered that photoexcited electrons transfer was restricted, which read the decreasement of mobility of photoexcited electron, while the cell "without" PEDOT/PSS could operate as a solar cell.

Original languageEnglish
Title of host publicationSolar Chemical Energy Storage, SolChES 2012
EditorsKatsushi Fujii, Masakazu Sugiyama, Shin Nakamura
PublisherAmerican Institute of Physics Inc.
Pages74-76
Number of pages3
ISBN (Electronic)9780735411968
DOIs
Publication statusPublished - 2013 Jan 1
Event1st International Workshop on Solar Chemical Energy Storage, SolChES 2012 - Sendai, Japan
Duration: 2012 Jul 232012 Jul 28

Publication series

NameAIP Conference Proceedings
Volume1568
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other1st International Workshop on Solar Chemical Energy Storage, SolChES 2012
CountryJapan
CitySendai
Period12/7/2312/7/28

Keywords

  • CdS photocatalysts
  • conducting polymer
  • wet solar cell

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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