报告摘要：

　　Manipulation of defects, ranging from atomic scale to nanometer scale, has leading the advancements in thermoelectrics for many decades through a reduced lattice thermal conductivity. This talk involves 0D vacancy (either intrinsic or extrinsic) and interstitial defects as strategy for effectively scattering phonons[1]. Moreover, the possible clustering of vacancy or interstitial, which forms 1D dislocations, may lead to additional phonon scattering, which opens new possibilities for advancing thermoelectrics[2]. Alternatively focusing on the phonon dispersion and speed of phonon propagation, low sound velocity[3] in complex crystal structures with diffusive species is also desired for a low lattice thermal conductivity[4]. The utilization of above mentioned strategies indeed lead to a great success in improving thermoelectric performance of both new and existing materials.

References：

[1] Y. Pei, et al., Adv Mater, 2018, 30, 1705617; J Am Chem Soc 2018, 140, 15883.

[2] Y. Pei, et al., Nat. Commun. 2017, 8, 13828; Adv Mater 2017, 29, 201606768.

[3] Y. Pei, et al., Adv Sci 2016, 3, 1600196.

[4] Y. Pei, et al., Joule 2017, 1, 816; Joule 2018, 2, 976; Adv Energy Mat, 2018, 8, 1800030.

报告人简介：

　　裴艳中， 2003 年获中南大学获学士学位， 2008 年获中科院上海硅酸盐研究所博士学位，随后在美国加州理工学院及密西根州立大学从事博士后研究共5年，2012 年年底加入同济大学材料科学与工程学院，先后获基金委“优青”基金及科技部“中青年科技创新领军人才”等科研资助。

　　主攻热电能源转换材料研究，发表论文近百篇，其中高影响力及影响因子>~10的第一/通讯作者论文40余 篇（包括1 篇Nature, 2 篇Joule, 2 篇Nature commun. 1 篇PNAS），累计获 SCI引用约6500次，H-因子38，ESI 高倍引用论文13 篇，ESI 热门引用论文2 篇。热电领域内第一位兼获国际热电学会 Goldsmid 及 Young Investigator 奖（该两奖项平均每年获奖人数