| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ZnAlO-based thermoelectric conversion material improving a nondimensional thermoelectric figure of merit ZT. <P>SOLUTION: The n-type thermoelectric conversion material includes an aluminum containing zinc oxide expressed by a general composition formula: Zn<SB>1-x-y</SB>Al<SB>x</SB>Ga<SB>y</SB>O (note, 0.01≤x≤0.04, 0.01≤y≤0.03, 0.9≤x/y≤2.0). The ZT of ≥0.6 can be obtained at 1,000°C. Concurrently doping (co-dope) Al and Ga to ZnO substantially lessens thermal conductivity κ with a large electric conductivity σ kept to substantially improve the thermoelectric performance. <P>COPYRIGHT: (C)2010,JPO&INPIT |
