报告题目：Metal Halide Perovskite Solar Cell Research by Surface Science and Advanced Characterization

报告人：Prof. Yabing Qi （戚亚冰）（Okinawa Institute of Science and Technology Graduate University）

报告时间：2019年11月11日（周一）下午：4:30~5:30;

报告地点：物理学院新楼多功能厅

ABSTRACT:

 Metal halide perovskite materials and devices have become one of the most active research fields and continues to progress rapidly on various fronts. My group at OIST is making efforts to use surface science and advanced material characterization to obtain in-depth understanding about perovskite materials and devices [1]. Instability is currently one of the major challenges for perovskite photovoltaic technology to move forward towards commercialization. In this talk, I will present our research progress on degradation mechanisms of perovskite materials [2], development of strategies to improve perovskite solar cell device stability [3], reduction of lead leakage using self-healing polymer-based encapsulation [4], and surface science understanding of perovskite materials and stability [5].

[1] L. K. Ono, Y. B. Qi*, J. Phys. Chem. Lett. 7, 4764 (2016); L. Qiu, L. K. Ono, Y. B. Qi*, Mater. Today Energy 7, 169 (2018); L. Qiu, S. He, L. K. Ono, Y. B. Qi*, Adv. Energy Mater. (2019) https://doi.org/10.1002/aenm.201902726

[2] S. Wang, Y. B. Qi* et al., Nature Energy 2, 16195 (2016).
[3] Z. Wu, Y. B. Qi* et al., Adv. Mater. 30, 1703670 (2018); Z. Liu, Y. B. Qi* et al., Nat. Commun. 9, 3880 (2018); L. Qiu, Z. Liu, Y. B. Qi* et al., Adv. Funct. Mater. 29, 1806779 (2019); Z. Wu, Y. B. Qi* et al., Adv. Mater. 31, 1804284 (2019); Y. Wang, M. Dar*, Y. B. Qi*, M. Graetzel*, Y. Zhao* et al., Science 365, 591 (2019).

[4] Y. Jiang, L. Qiu, Y. B. Qi* et al., Nature Energy 4, 585 (2019).

[5] R. Ohmann, Y. Li*, N.-G. Park*, Y. B. Qi* et al., J. Am. Chem. Soc. 137, 16049 (2015); J. Hieulle, X. Wang, Y. Yan*, Y. B. Qi* et al., J. Am. Chem. Soc. 141, 3515 (2019); C. Stecker, K. Liu, G. Wang*, Y. B. Qi* et al., ACS Nano 141, 3515 (2019).

Biography：

Yabing Qi is Professor and Unit Director of Energy Materials and Surface Sciences Unit at Okinawa Institute of Science and Technology Graduate University in Japan. Prior to his current appointment, Prof. Qi was a postdoctoral fellow at Princeton University. He received his B.S., M.Phil., and Ph.D. from Nanjing University, Hong Kong University of Science and Technology, and University of California Berkeley, respectively. His research interests include perovskite solar cells, surface sciences, Li ion batteries, energy materials, and organic electronics.

邀请人： 方国家 教授