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Thermoelectric properties of P‐doped and V‐doped Fe 2 O 3 for renewable energy conversion
Author(s) -
Hwang H. K.,
Seo J. W.,
Seo W.S.,
Lim Y.S.,
Park K.
Publication year - 2014
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.3052
Subject(s) - seebeck coefficient , thermoelectric effect , electrical resistivity and conductivity , doping , microstructure , materials science , analytical chemistry (journal) , grain size , thermoelectric materials , renewable energy , condensed matter physics , chemistry , metallurgy , thermodynamics , physics , optoelectronics , electrical engineering , environmental chemistry , quantum mechanics , engineering
SUMMARY The effect of P and V contents on the microstructure and thermoelectric properties of Fe 2‐x M x O 3 (M: P and V; 0 ≤ x ≤ 0.01) is studied. Higher P and V contents result in increases of both the grain size and density, thus increasing the electrical conductivity. The absolute values of the Seebeck coefficients of the Fe 2‐x P x O 3 and Fe 2‐x V x O 3 increase with increasing P and V contents up to x = 0.0075 and 0.005, respectively, and then decrease with further increase of its concentration. The addition of a small amount of V (0.005) to Fe 2 O 3 leads to a marked increase in both the electrical conductivity and Seebeck coefficient. This means that the introduction of a small amount of V is highly effective for improving the thermoelectric properties of Fe 2 O 3 . Copyright © 2013 John Wiley & Sons, Ltd.