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Structural and Optical Study of CdSe Q-dots

Jyotsna Chauhan, Varsha R. Mehto, Akanksha Mehto, Priyanshita Thakur

Abstract


In this paper we have report the properties of CdSe Q-dots. Calculations of different parameters for different sizes of CdSe Q-dots are presented. The XRD analysis used to find the composition, crystal structure and crystallite size. Scherrer equation is used to calculate the Nano crystallite size. XRD analysis reveals that the CdSe QD crystallite sizes in the sample are 3.26 nm, 3.72 nm, and 3.20 nm by applying the appropriate capping agent during the synthesis process. The optical absorption studies revealed that the observed absorption edges in the nano crystalline samples exhibited a blue shift due to the quantum confinement effect. Strain is also increased with decreasing the size of nanoparticles.PL study revealed.


Keywords


CdSe, Q-dots, XRD, Strain, Optical, Nanostructure

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References


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