Background: On decreasing size down to nanoscale, the optical and electronics properties
of semiconductors become tunable instead of being constant.
Materials & Methods: Based on classical and quantum approach, a simple integrated theoretical
model is presented without any adjustable parameter to study the size and shape effect on the refractive
index, dielectric constant and bang gap of the semiconducting nanowire. The model predicts
that with the decrease in the size of the semiconducting nanowire, dielectric constant and refractive
index reduces, whereas as band gap enhances.
Results: The theory reveals that the behavior exhibited by cylindrical and noncylindrical nanowires
differs due to their different shape factors.
Conclusion: Agreement of our predicted results with the available experimental and simulated results
and with the other theoretical models validates the present work.