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Lead-Free Halide Double Perovskites for Photovoltaic Applications: Electronic Structure, Thermodynamic Stability, and Defect Properties

发布者:Zewen Xiao发布时间:2017-12-05浏览量:

题目:Lead-Free Halide Double Perovskites for Photovoltaic Applications: Electronic Structure, Thermodynamic Stability, and Defect Properties

报告人:Zewen Xiao

Materials Research Center for Element Strategy, Tokyo Institute of Technology, Japan

 

报告时间:2017年12月8日(星期五)14:30-15:00

报告地点:材料学院16舍324会议室

报告摘要:

To enable the ultimate commercialization of emerging Pb halide perovskite (ABX3) solar cell technology, extensive efforts have been undertaken to overcome the toxicity and air-instability issues, by identifying analogous nontoxic or low-toxicity and air-stable halide perovskite-based absorbers. Substituting Pb by a combination of monovalent and trivalent cations to form A2B(I)B(III)X6 halide double perovskites has been considered one attractive approach for achieving this goal. In this seminar, we systhemcaitlly report the electronic structure, thermodynamic stability, and defect properties of the prospective halide double perovskites, which are important aspects for photovoltaic absorber materials. We also highlight the materials design principles for promissing new perovskite-based photovoltiac absorbers.

 

报告人简介:

Zewen Xiao received his Ph.D. degree in Materials Science from Tokyo Institute of Technology in 2015 under the supervision of Prof. Toshio Kamiya and Prof. Hideo Hosono. Then, he worked as a postdoctoral fellow in Prof. Yanfa Yan’s group at The University of Toledo, US, for a year. Currently, he is a specially appointed assistant professor of Materials Research Center for Element Strategy at Tokyo Institute of Technology. He has published 30+ SCI papers, including 20+ first-author papers published in top journals including J. Am. Chem. Soc., Angew. Chem., Adv. Energy Mater., Mater. Horiz., and J. Phys. Chem. Lett. Times of citations is over 570, with h-index 14. His current research interest focuses on first-principles simulation and design of functional materials including photovoltaic absorbers, high-mobility p-type semiconductors, and inorganic electrides.

 

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