Study of ‘Germanium and Nanoparticles' Optical Absorption Properties


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



Germanium, Nanoparticles, Absorption


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.




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.