发布时间：2025-04-30

论文名称：Understanding Phonon Scattering by Nanoprecipitates in Potassium- Doped Lead Chalcogenides

发表刊物：ACS Applied Materials & Interfaces

摘要：We present a comprehensive experimental and theoretical study of phonon scattering by nanoprecipitates in potassium-doped PbTe, PbSe, and PbS .We highlight the role of the precipitate size distribution measured by microscopy, whose tuning allows for thermal conductivities lower than the limit achievable with a single size. The correlation between the size distribution and the contributions to thermal conductivity from phonons in different frequency ranges provides a physical basis to the experimentally measured thermal conductivities, and a criterion to estimate the lowest achievable thermal conductivity. The results have clear implications for efficiency enhancements in nanostructured bulk thermoelectrics.

合写作者：Z. Wang, X. Yang, D. Feng, H. Wu, J. Carrete, L. Zhao, C. Li, S. Cheng, et al.

卷号：9

页面范围：3686−3693

是否译文：否

发表时间：2017-01-04