Watanabe Masaki, Kita Takuji, Fukumura Tomoteru, Ohtomo Akira, Ueno Kazunori, Kawasaki Masashi
Toyota Motor Corporation, Toyota 471-8571, Japan.
J Comb Chem. 2008 Mar-Apr;10(2):175-8. doi: 10.1021/cc700094a. Epub 2008 Feb 16.
A high-throughput method has been developed to evaluate the Seebeck coefficient and electrical resistivity of combinatorial thin-film libraries of thermoelectric materials from room temperature to 673 K. Thin-film samples several millimeters in size were deposited on an integrated Al2O3 substrate with embedded lead wires and local heaters for measurement of the thermopower under a controlled temperature gradient. An infrared camera was used for real-time observation of the temperature difference Delta T between two electrical contacts on the sample to obtain the Seebeck coefficient. The Seebeck coefficient and electrical resistivity of constantan thin films were shown to be almost identical to standard data for bulk constantan. High-throughput screening was demonstrated for a thermoelectric Mg-Si-Ge combinatorial library.
已开发出一种高通量方法，用于评估从室温到673 K的热电材料组合薄膜库的塞贝克系数和电阻率。将几毫米大小的薄膜样品沉积在带有嵌入式引线和局部加热器的集成Al2O3衬底上，以便在受控温度梯度下测量热功率。使用红外热像仪实时观察样品上两个电触点之间的温差ΔT，以获得塞贝克系数。结果表明，康铜薄膜的塞贝克系数和电阻率与块状康铜的标准数据几乎相同。对热电Mg-Si-Ge组合库进行了高通量筛选。
