V_2O_5 SnO-TeO_2系ガラスのゼーベック係数

概要

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The thermoelectric power of semiconducting V_2O_5 SnO TeO_2 glasses was measured froun 373 to 473 K. XV_2O_5 10SnO・ (90-X)TeO_2 (X=20 to 60 mol%) and XV_2O_5 20SnO (80-X)TeO_2 glasses (X=30 to 50 mol%) were found to be n type semiconductors, while 20V_2O_5 20SnO 60TeO_2 glass, was p-type. The Seebeck coefficient, Q, were determined to be from 188 to + 5 μ/K at 473 K. For n-type semiconducting glasses, Q satisfied the Heikes relation, giving an evidence for small polaron hopping conduction. The Seebeck coefficient for XV_2O_5 20SnO (80-X)TeO2 (X=20-60 molo/.) and XV_2O_5 10SnO (90-X)TeO2 glasses (X= 20 50 mol%) increased with decreasing V_2O_5 content. It is concluded that the dominant factor affecting See beck coefficient was the fraction of reduced ion concen tration, C_v (V^<4+>/V_<total>) .
社団法人日本セラミックス協会の論文
1994-06-01