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Size dependence of optical properties in solution-grown Pb1-xFexS nanoparticle films
R.K. Joshi, , H.K. Sehgal
Published in
Volume: 14
Issue: 7
Pages: 809 - 812
The optical band gap (Eg) of Pb1-xFexS solution-grown nanoparticle films was varied from 2.65 to 2.22 eV with an increase in iron concentration 0.25 ≤ × ≤ 0.75 in films grown at fixed pH and temperature by the chemical bath deposition method. The presence of excitonic structure in the ternary Pb1-xFexS for x ≥ 0.50 suggests increasing binding energy with increase in iron concentration in the films. A shift of excitonic peak towards higher energy with an increase in iron concentration is also observed.
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