Rare three-valence-band convergence leading to ultrahigh thermoelectric performance in all-scale hierarchical cubic SnTe
Fan Li, Xin Liu, Shurong Li, Xiaofan Zhang, Ni Ma, Xin-Jing Li, Xin-Yun Lin, Ling Chen, Haijun Wu, Li‐Ming Wu
Abstract
Three-valence-band ( i.e. , L, Σ and Λ) charge transport and multiple-scale defects were simultaneously achieved in p-type SnTe through dual incorporation of MnCdTe 2 and Ge, which contributed to a record-high ZT of ∼1.97 at 900 K.
Topics & Concepts
Materials scienceValence bandCondensed matter physicsValence (chemistry)Thermoelectric effectConvergence (economics)Band gapOptoelectronicsPhysicsThermodynamicsQuantum mechanicsEconomicsEconomic growthAdvanced Thermoelectric Materials and DevicesChalcogenide Semiconductor Thin FilmsPerovskite Materials and Applications