Co-sensitization of natural dyes for improved efficiency in dye-sensitized solar cell application

K. Ashok Kumar, K. Subalakshmi, J. Senthilselvan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

Abstract

In this paper, a new approach of co-sensitized DSSC based on natural dyes is investigated to explore the possible way to improve the power conversion efficiency. To realize this purpose 10 DSSC devices were fabricated using mono-sensitization and co-sensitization of ethanolic extracts of natural dye sensitizers obtained from Cactus fruit, Jambolana fruit, Curcumin and Bermuda grass. The optical absorption spectrum of the mono and hybrid dye extracts were studied by UV-Visible absorption spectrum. It shows the characteristic absorption peaks in visible region corresponds to the presence of natural pigments of anthocyanin, betacyanin and chlorophylls. Absorption spectrum of hybrid dyes reveals a wide absorption band in visible region with improved extinction co-efficient and it is favorable for increased light harvesting nature. The power conversion efficiency of DSSC devices were calculated using J-V curve and the maximum efficiency achieved in the present work is noted to be ~0.61% for Cactus-Bermuda co-sensitized DSSC.

Original languageEnglish
Title of host publicationDAE Solid State Physics Symposium 2015
EditorsR. Chitra, Shovit Bhattacharya, N. K. Sahoo
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413788
DOIs
StatePublished - 23 May 2016
Event60th DAE Solid State Physics Symposium 2015 - Noida, Uttar Pradesh, India
Duration: 21 Dec 201525 Dec 2015

Publication series

NameAIP Conference Proceedings
Volume1731
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference60th DAE Solid State Physics Symposium 2015
Country/TerritoryIndia
CityNoida, Uttar Pradesh
Period21/12/1525/12/15

Keywords

  • Co-sensitization
  • DSSC
  • J-V
  • Natural dyes

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