Optical absorption spectrum in disordered semiconductor multilayers

Details Optical absorption spectrum in disordered semiconductor multilayers Optical absorption spectrum in disordered semiconductor multilayers

2010-01-12

arxiv.org/abs/1001.2000v3

J. Appl. Phys. 107, 104322 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 6 EPS figures, revised version

Scientific paper

10.1063/1.3428476

The effects of chemical disorder on the electronic and optical properties of semiconductor alloy multilayers are studied based on the tight-binding theory and single-site coherent potential approximation. Due to the quantum confinement of the system, the electronic spectrum breaks into a set of subbands and the electronic density of states and hence the optical absorption spectrum become layer-dependent. We find that, the values of absorption depend on the alloy concentration, the strength of disorder, and the layer number. The absorption spectrum in all layers is broadened because of the influence of disorder and in the case of strong disorder regime, two optical absorption bands appear. In the process of absorption, most of the photon energy is absorbed by the interior layers of the system. The results may be useful for the development of optoelectronic nanodevices.

Affiliated with

Also associated with

No associations

Rating

Optical absorption spectrum in disordered semiconductor multilayers does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Optical absorption spectrum in disordered semiconductor multilayers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical absorption spectrum in disordered semiconductor multilayers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-523730