Volume : VI, Issue : I, January - 2017

Study of Optical band gap and microstrain of ZnS nanomaterials prepared by CBD method.

Hitoram Roy, Sanjib Karmakar

Abstract :

 We report synthesis and study of optical band gap and microstrain of undoped

 

  (ZnS)and doped ZnS nanoparticles prepared by CBD method at 0.0125 M. The prepared

 

nanoparticles are characterised by X–ray diffraction, UV absorption and Transmission Electron

 

Microscopy techniques. The dopant is Fe and doping concentrations are  6 %  (ZNS–Fe–6%) and

 

8 %  (ZNS–Fe–8%).  The average particle sizes are found to be of the order of 4 nm, 3 nm and 4

 

nm for ZnS, ZNS–Fe–6% and  ZNS–Fe–8%. The microstrains associated with the nanoparticles are found to be 3.13 X 10 ^–2, 1.5 X 10 ^–3 and 1.8 X 10 ^–3 for ZnS, ZNS–Fe–6% and  ZNS–Fe–8%

 

doped by Fe. The decreased value of microstrain may be attributed to the decrease in defect

 

density of the nanomaterials after doping. The value of microstrains for ZNS–Fe–6% and ZNS–

 

Fe–8% are almost equal. Which suggests that when doping concentration is increased from 6% to

 

8%, the structure of ZnS nanoparticles is almost remain same. The values of optical band gap for

 

ZNS–Fe–6% and  ZNS–Fe–8% are found to 3.35 eV which also suggests that the structures of

 

both the  doped nanoparticles are almost same.

Keywords :

Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

Hitoram Roy, Sanjib Karmakar, Study of Optical band gap and microstrain of ZnS nanomaterials prepared by CBD method., International Journal of Scientific Research, Volume : 6 | Issue : 1 | JANUARY 2017

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