Simple theoretical analysis of the photoemission from quantum confined effective mass superlattices of optoelectronic materials

De, D and Bhattacharya, Sitangshu and Adhikari, SM and Kumar, A and Bose, PK and Ghatak, KP (2011) Simple theoretical analysis of the photoemission from quantum confined effective mass superlattices of optoelectronic materials. In: Beilstein Journal of Nanotechnology, 2 . pp. 339-362.

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Abstract

The photoemission from quantum wires and dots of effective mass superlattices of optoelectronic materials was investigated on the basis of newly formulated electron energy spectra, in the presence of external light waves, which controls the transport properties of ultra-small electronic devices under intense radiation. The effect of magnetic quantization on the photoemission from the aforementioned superlattices, together with quantum well superlattices under magnetic quantization, has also been investigated in this regard. It appears, taking HgTe/Hg1-xCdxTe and InxGa1-xAs/InP effective mass superlattices, that the photoemission from these quantized structures is enhanced with increasing photon energy in quantized steps and shows oscillatory dependences with the increasing carrier concentration. In addition, the photoemission decreases with increasing light intensity and wavelength as well as with increasing thickness exhibiting oscillatory spikes. The strong dependence of the photoemission on the light intensity reflects the direct signature of light waves on the carrier energy spectra. The content of this paper finds six different applications in the fields of low dimensional systems in general.

Item Type:	Journal Article
Publication:	Beilstein Journal of Nanotechnology
Publisher:	Beilstein-Institute
Additional Information:	Copyright of this article belongs to Beilstein-Institute.
Keywords:	magnetic quantization;photoemission;quantum dot effective mass superlattices;quantum well effective mass superlattices; quantum well wire effective mass superlattices
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	09 Mar 2012 11:04
Last Modified:	13 Mar 2019 05:04
URI:	http://eprints.iisc.ac.in/id/eprint/43876

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