[24p-E205-1~18] 9.4 Thermoelectric conversion

△ [24p-E205-1] [Highlight]Inverse Jonker plot analysis of the large-scale thermoelectric properties data on Starrydata

〇(B)Sho Bi¹, Yukari Katsura^1,2,3, Masaya Kumagai^4,5, Kaoru Kimura¹ (1.The Univ. of Tokyo, 2.NIMS, 3.RIKEN, 4.SAKURA Internet Inc., 5.Kyoto Univ.)

Keywords:thermoelectric materials, materials informatics, database

In Starrydata, a large-scale database of thermoelectric materials, the composition vectors of 100 dimensions, which were transformed so that the sum of the composition equations is 1, were used to classify into several compound groups by DBSCAN. Polynomial fitting was performed to investigate the relationship between the Seebeck coefficient and electrical conductivity in the Inverse Jonker plot. Focusing on the samples that can be approximated by a linear line, the slope and intercept were examined for the data showing linear behavior, and it was found that each cluster showed a different distribution and was distributed on a straight line.