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Improving the optoelectrical properties of Cu2ZnSnS4 using gold and graphene nano-fillers

  • Atul Kumar
  • Ajay D. ThakurEmail author
Article
  • 177 Downloads

Abstract

We have investigated photo-response of Cu2ZnSnS4 (CZTS) and have explored ways for enhancing the photo-response and conductivity using suitable nano-compositing strategies. In phase pure CZTS, gold nanoparticles and graphene flakes are used as nanofillers to make nano-composite samples. Photo-response of as-grown CZTS is improved by compositing gold with the observation of Ilight/Idark=1.29. With increasing gold nanoparticle size conductivity improved for CZTS gold composite. Compositing 1% graphene by weight has enhanced the current flow in the CTZS by 125 times. The graphene weight ratio in the composite is limited by absorbance reduction. The demonstrated high-quality CZTS nano-composite samples with improved optoelectrical properties holds tremendous promise for photovoltaic applications.

Notes

Acknowledgements

The authors thank Ministry of Human Resource Development (MHRD), Government of India for financial support.

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Authors and Affiliations

  1. 1.Department of PhysicsIndian Institute of Technology PatnaBihtaIndia

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