Synthesis of Nanocrystalline FeS₂ with Increased Band Gap for Solar Energy Harvesting
By Middya, Somnath; Layek, Animesh; Dey, Arka & Ray, Partha Pratim
Published in Journal of Materials Science & Technology
NULL
2014
Abstract
In this paper, we have reported the synthesis of FeS₂ of higher band gap energy (2.75 eV) by using capping reagent and its successive application in organic–inorganic based hybrid solar cells. Hydrothermal route was adopted for preparing iron pyrite (FeS₂) nanoparticles with capping reagent PEG-400. The quality of synthesized FeS₂ material was confirmed by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, Fourier transform infrared, thermogravimetric analyzer, and Raman study. The optical band gap energy and electro-chemical band gap energy of the synthesized FeS₂ were investigated by UV–vis spectrophotometry and cyclic voltammetry. Finally band gap engineered FeS₂ has been successfully used in conjunction with conjugated polymer MEHPPV for harvesting solar energy. The energy conversion efficiency was obtained as 0.064% with a fill-factor of 0.52.
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