Using the spark plasma sintering process In2-xCexO3 (0 = x = 0.10) fine grained ceramics have been synthesized. Our results indicate that all the In2O3-based ceramic samples show good electrical conductivity and high thermoelectric power factor. In comparison with pure In2O3 bulks or doped samples with grain size above 1 mu m, the 100300 nm fine grain In2O3-based ceramics exhibit much lower thermal conductivities (1.92.5 W center dot(m center dot K)-1 at 1173 K), demonstrating a remarkable cooperative tuning effect imposed by grain size reduction and nano-clusters formation. The maximum figure of merit ZT value is optimized up to 0.47 at 1223 K for In1.92Ce0.08O3 sample, which makes them promising candidates for thermoelectric applications.
Liu, Y,Lin, YH,Xu W,et al. High-Temperature Transport Property of In2-xCexO3 (0=x=0.10) Fine Grained Ceramics[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2012,95(SI8):2568-2572.
Liu, Y.,Lin, YH.,徐伟.,陈栋梁；Xu, W.,Cheng, B.,...&Nan, CW.(2012).High-Temperature Transport Property of In2-xCexO3 (0=x=0.10) Fine Grained Ceramics.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,95(SI8),2568-2572.
Liu, Y,et al."High-Temperature Transport Property of In2-xCexO3 (0=x=0.10) Fine Grained Ceramics".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 95.SI8(2012):2568-2572.