Paradox associated with cohesive energy of IV-VI semiconductors

Nanda, KK (2020) Paradox associated with cohesive energy of IV-VI semiconductors. In: Physics Letters, Section A: General, Atomic and Solid State Physics, 384 (26).

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Abstract

Cohesive energy of elemental systems is simply the heat of sublimation. However, the cohesive energy for compounds depends on the final products when vaporized. Different descriptions exist based on the final products and a wide range of value has been reported. Here, we compare the cohesive energy reported in the literature for IV-VI (compound) semiconductors and discuss the paradox associated with it. By analysing different descriptions and the value obtained, we argue that the heat of sublimation of IV-VI compounds is the cohesive energy per molecule (as they evaporate in a molecular form) and is much lower that the cohesive energy per atom and the cohesive energy per atom depends on the final products when the solid is vaporized into atoms. © 2020 Elsevier B.V.

Item Type:	Journal Article
Publication:	Physics Letters, Section A: General, Atomic and Solid State Physics
Publisher:	Elsevier B.V.
Additional Information:	Copy right for this article belongs to Elsevier B.V.
Keywords:	IV-VI semiconductors; Sublimation, Cohesive energies; Heat of sublimation, Atoms
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	22 Oct 2020 09:49
Last Modified:	22 Oct 2020 09:49
URI:	http://eprints.iisc.ac.in/id/eprint/65796

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