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Theoretical Study of Dependence of Wavelength on Size of Quantum Dot

Author(s):

Nisha Pandey , Department of Post Graduate Studies and Research in Physics, St. Aloysius College, Jabalpur; Amrita Dwivedi, Department of Post Graduate Studies and Research in Physics and Electronics, Rani Durgavati University, Jabalpur; Arunendra Patel, Department of Post Graduate Studies and Research in Physics, St. Aloysius College, Jabalpur

Keywords:

Quantum confinement effect, wavelength, Quantum dot, Effective mass approximation

Abstract

In this paper CdS, CdSe, ZnO, GaAs and CdTe semiconductor materials are used for studies. Using the effective mass approximation (EMA) method Quantum confinement effect on semiconductor quantum dots (QD's) has been studied. Effect of Size of Quantum Dot on wavelength is observed .The result shows that wavelength is directly proportional to the size (radius) of quantum dot. Thus, as one increases the radius (size), the wavelength increases. It means the biggest quantum dots produce the longest wavelengths, while the smallest dots make shorter wavelengths It also shows that wavelength can be tuned by changing the size of quantum dots (QDs) based on the quantum confinement effect which plays a fundamental role in electrical and optical properties of QDs. In addition, our results indicate that the after 1-4 nm, the effect of size of quantum dot on wavelength is very less for different semiconductor materials.

Other Details

Paper ID: IJSRDV4I11128
Published in: Volume : 4, Issue : 1
Publication Date: 01/04/2016
Page(s): 1158-1159

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