Study of ‘Germanium and Nanoparticles' Optical Absorption Properties

Authors

  • Dr. Pawan Kumar Associate Professor, Department of Physics, Meerut College, Meerut, Uttar Pradesh, INDIA C

DOI:

https://doi.org/10.31033/ijemr.10.1.23

Keywords:

Germanium, Nanoparticles, Absorption

Abstract

The optical absorption characteristics of noncrystalline and crystalline Ge nanoparticles with diameters
ranging from ∼ 2.5 to 15 Å have been investigated using timedependent density functional theory at the B3LYP/6-31G
level. On certain chosen Ge nanoparticles, hydrogen passivation and phosphorus doping were also computed. The
optical absorption spectra of non-crystalline Ge nanoparticles evolve from numerous peaks to a continuous wide band as
cluster size increases, while also exhibiting a consistent redshift. For both non-crystalline and crystalline Ge
nanoparticles, doping phosphorus causes the absorption spectra to move toward the lower energy region. In contrast
to crystalline Ge nanoparticles, non-crystalline Ge nanoparticles exhibit higher absorption in the visible range,
independent of phosphorus doping.

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Published

2020-02-29

How to Cite

Dr. Pawan Kumar. (2020). Study of ‘Germanium and Nanoparticles’ Optical Absorption Properties. International Journal of Engineering and Management Research, 10(1), 143–151. https://doi.org/10.31033/ijemr.10.1.23