Modelling of density of states and energy level of chalcogenide quantum dots

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dc.contributor.authorAhamed, M. Irshad
dc.contributor.authorAhamed, Mansoor
dc.contributor.authorMuthaiyan, R.
dc.contributor.statusnemhu_HU
dc.date.accessioned2021-12-20T13:42:17Z
dc.date.available2021-12-20T13:42:17Z
dc.date.issued2021-10-13
dc.description.abstractQuantum dots (QDs) or semiconductor nanocrystals are luminous materials with unique optical properties that can be fine-tuned by varying the size of the material. Chalcogenide QDs show strong quantum confinements effects owing to the fact that the exciton Bohr radius is much larger than the particle size, and tunable energy bandgap leads to widespread technological interest in near-infrared optical devices. In this communication, one dimensional Cu2SnS3 and PbSexS1-x QDs is modeled by a particle in a box model which was used to compute energies and density of states. The density of states and the energy level of QDs are determined as a function of the strengths of the potential walls of the inner box. The results exhibit that the density of states decreases exponentially with an increase in the energy level of QDs. The density of states at lower energy levels is more significant than what is observed in higher energy levels.hu_HU
dc.identifier.doi10.1556/1848.2021.00288hu_HU
dc.identifier.issn2062-0810
dc.identifier.issue1hu_HU
dc.identifier.jtitleInternational Review of Applied Sciences and Engineering
dc.identifier.urihttp://hdl.handle.net/2437/326511
dc.identifier.urlhttps://akjournals.com/view/journals/1848/13/1/article-p42.xmlhu_HU
dc.identifier.volume13hu_HU
dc.language.isoenhu_HU
dc.publisherAkadémiai Kiadóhu_HU
dc.subjectdensity of stateshu_HU
dc.subjectquantum dotshu_HU
dc.subjectCu2SnS3hu_HU
dc.subjectPbSexS1-xhu_HU
dc.subjectenergy levelhu_HU
dc.subjectchalcogenidehu_HU
dc.titleModelling of density of states and energy level of chalcogenide quantum dotshu_HU
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International Review of Applied Sciences and Engineering