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Journal of Optics

, Volume 48, Issue 1, pp 104–112 | Cite as

Current–voltage characteristics of new organic natural dye extracted from Terminalia chebula for dye-sensitized solar cell applications

  • M. Rekha
  • M. Kowsalya
  • S. Ananth
  • P. VivekEmail author
  • RO. MU. Jauhar
Research Article
  • 35 Downloads

Abstract

Low-cost and environment-friendly dye-sensitized solar cells were fabricated using titanium dioxide nanoparticles sensitized by a new natural dye extracted from Terminalia chebula dry fruits. Pure titanium dioxide (TiO2) nanoparticles in anatase phase were synthesized by sol–gel process and pre-dye-treated TiO2 nanoparticles were synthesized by mixing the natural dye during synthesis itself using our modified sol–gel process. This pre-dye treatment with natural dye has yielded colored TiO2 nanoparticles with uniform adsorption of natural dye, reduced agglomeration, less dye aggregation and improved morphology. The pure and pre-dye-treated TiO2 nanoparticles were subjected to structural, optical, spectral and morphological studies. Dye-sensitized solar cells fabricated using the pure and pre-dye-treated TiO2 nanoparticles sensitized by T. chebula natural dye showed promising solar light to electron conversion efficiencies of 0.86% and 1.49%, respectively. The pre-dye-treated TiO2-based DSSC showed 73% improvement in efficiency when compared to conventional DSSC.

Keywords

Natural dye Pre-dye-treated TiO2 Terminalia chebula DSSC 

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Copyright information

© The Optical Society of India 2019

Authors and Affiliations

  • M. Rekha
    • 1
    • 2
  • M. Kowsalya
    • 1
  • S. Ananth
    • 3
  • P. Vivek
    • 4
    Email author
  • RO. MU. Jauhar
    • 5
  1. 1.School of Electrical EngineeringVIT UniversityVelloreIndia
  2. 2.Department of Electrical and Electronics EngineeringChrist College of Engineering and TechnologyPuducherryIndia
  3. 3.Department of Physics, KPR Institute of Engineering and TechnologyCoimbatoreIndia
  4. 4.Department of Physics, Sri Sankara Arts and Science College (Autonomous)Enathur, KancheepuramIndia
  5. 5.Division of Physics, School of Advanced SciencesVellore Institute of TechnologyChennaiIndia

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