Reshak, A. H. and Auluck, S. (2015) Thermoelectric properties of Nowotny-Juza NaZnX (X = P, As and Sb) compounds. Computational Materials Science, 96. pp. 90-95. ISSN 0927-0256

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Abstract

The electronic transport coefficients of Nowotny-Juza NaZnX (X = P, As and Sb) compounds were evaluated by using the semi-classical Boltzmann and the rigid band model. The compounds are direct band gap (Cv-Cc) semiconductors with energy band gaps of about 1.8, 1.47 and 0.25 eV, for NaZnX (X = P, As and Sb) respectively. A maximum value of electrical conductivity of about 5.4 x 10(20) (Omega ms)(-1) and 5.1 x 10(20) (Omega ms)(-1) is achieved at 0.2 mu (eV) for n-type of NaZnP and NaZnAs, while for NaZnSb a maximum value of about 4.1 x 10(20) (Omega ms)(-1) is found at -0.15 mu (eV) for p-type and 4.2 x 10(20) (Omega ms)(1) at 0.15 mu (eV). The investigated materials exhibit the highest value of Seebeck coefficient at 300 K of about 300, 250, 510 (mu V/K) for p-type and -290, -240, -305 (lV/K) for n-type of NaZnX (X = P, As and Sb) respectively. In the chemical potential region between -/+ 0.6, -/+ 0.5, -/+ 0.025 mu (eV) NaZnP, NaZnAs, NaZnSb respectively exhibit a minimum value of electronic thermal conductivity. Therefore in these regions the investigated materials can give maximum efficiency.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier B.V.
Uncontrolled Keywords:	Nowotny–Juza NaZnX (X = P, As and Sb) Thermoelectric BoltzTraP code Energy conversion
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	30 Jan 2017 11:45
Last Modified:	30 Jan 2017 11:52
URI:	http://npl.csircentral.net/id/eprint/2050

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