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- Title
Effective Mass Model Supported Band Gap Variation in Cobalt-Doped ZnO Nanoparticles Obtained by Co-Precipitation.
- Authors
Misra, K. P.; Jain, S.; Agarwala, A.; Halder, N.; Chattopadhyay, S.
- Abstract
Zn1 –xCoxO (x = 0, 0.01, 0.03, 0.05) nanoparticles were synthesized using co-precipitation method. Shift in peaks of XRD patterns for 2θ values has been observed. The changes in 2θ value for different peaks for different samples are studied systematically. Dislocation densities (δ) for the samples are calculated and correlated with observed shift in 2θ values for all the samples. UV-Vis study has been performed to understand the effect of cobalt doping on optical band gap. The band gap shows a cubic variation with dopant concentration (x). The nature of band gap variation has been explained and supported by effective mass model. Samples are also characterized by SEM and EDX to understand the surface morphology and elemental composition.
- Subjects
COPRECIPITATION (Chemistry); DISLOCATION density; NANOPARTICLES; SURFACE morphology; COBALT chloride; ZINC oxide; COBALT
- Publication
Semiconductors, 2020, Vol 54, Issue 3, p311
- ISSN
1063-7826
- Publication type
Article
- DOI
10.1134/S1063782620030136