Thermoelectric properties of Nowotny-Juza NaZnX (X = P, As and Sb) compounds
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Thermoelectric properties of Nowotny-Juza NaZnX (X = P, As and Sb) compounds
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| Creator |
Reshak, A. H.
Auluck, S. |
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| Subject |
Materials Science
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| Description |
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.
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| Publisher |
Elsevier
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| Date |
2015-01
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/2050/1/356.pdf
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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| Relation |
http://npl.csircentral.net/2050/
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