Enhanced efficiency of bifacial and back-illuminated Ti foil based flexible dye-sensitized solar cells by decoration of mesoporous SiO2 layer on TiO2 anode

Kun Mu Lee, Wei Hao Chiu, Vembu Suryanarayanan, Chun Guey Wu

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The present study focuses on enhancing the efficiency of bifacial and back-illuminated dye-sensitized solar cells (DSCs) by incorporating SiO 2 mesoporous layer on TiO2 electrode. The performance of DSCs is investigated by UV-visible spectroscopy, incident photon conversion efficiency (IPCE) and electrochemical impedance spectroscopy (EIS). It is observed that the current ratio of back- to front-DSC increases with the increase in the thickness of SiO2 layer, which in turn influences the incident light to dyed-TiO2 electrode, especially in the wavelength of 400-600 nm. The Ti foil based flexible small (0.28 cm2) and sub-module (5 cm × 10 cm) DSCs having this modification show high conversion efficiencies of 6.76 and 5.54% respectively under 100 mW cm -2 (AM 1.5).

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalJournal of Power Sources
Volume232
DOIs
StatePublished - 2013

Keywords

  • Back-illuminated
  • Dye-sensitized solar cells
  • Mesoporous film
  • Ti foil

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