Hongwei Han

Perovskite & Organic devices

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China

Email: hongwei.han@mail.hust.edu.cn

Biography

Prof. Han Hongwei is a professor at the Wuhan National Research Center for Optoelectronics at Huazhong University of Science and Technology. He received his B.S.、M.S. and Ph.D. degree at Wuhan University. His research mainly focuses on research on Mesoscopic Photovoltaic & Optoelectronic Devices (MPOD) . In 2016, he was selected as a special Professor of the Changjiang Scholars Program, and in 2017, he was selected as the leading Talents of Ten Thousand Talents Program. He has published more than 150 papers in Science, Adv Mater, Nature Comms, JACS and other journals, with 2600 citations.

Abstract for Presentation

The Progress of Printable Mesoscopic Perovskite Solar Cells

The printable mesoscopic perovskite solar cells were developed with triple mesoscopic layers and printing technology in our group. The conjugated or non-conjugated bifunctional molecules were introduced into the perovskite materials to enhance their stability and efficiency. The device presents no obvious decay within over 13000h light soaking and high efficiency of more than 20% with lab size and certified 14.9% with 2200cm2. The crystals of the perovskite films are reconstructed by post-treating with methylamine gas and allows the regeneration of the photodegraded PSCs via the crystal reconstruction and the PCE can recover to 91% of the initial value after two cycles of the photodegradation-recovery process. A 110 m2 mesoscopic perovskite solar system was exhibited. We discover the strengthened and localized mechanism to make PSC meet stability standards of IEC 61215 qualification tests, including ultraviolet preconditioning test (60oC, 50 kWhm-2), thermal cycling test (-40~85 ℃, 200 cycles), damp heat test (85 ℃/85%RH, 1100h) and maximum power point tracking light soaking test (55±5 ℃, 1000h), which was confirmed by In-situ GIWAXS, In-situ PL mapping and the behaviors of perovskite under external fields1-5. These results offer a promising prospect for its commercial application.

References

[1]  A. Y. Mei, X. Li, L. F. Liu, Z. L. Ku, T. F. Liu, Y. G. Rong, M. Xu, M. Hu, J. Z. Chen, Y. Yang, M. Gratzel, H. W. Han, A hole-conductor-free, fully printable mesoscopic perovskite solar cell with high stability, Science 345(6194), 295-298 (2014)

[2] Y. G. Rong, Y. Hu, A. Y. Mei, H. R. Tan, M. I. Saidaminov, S. I. Seok, M. D. McGehee, E. H. Sargent, H. W. Han, Challenges for commercializing perovskite solar cells, Science 361(6408), (2018)

[3] A. Y. Mei, Y. S. Sheng, Y. Ming, Y. Hu, Y. G. Rong, W. H. Zhang, S. L. Luo, G. R. Na, C. B. Tian, X. M. Hou, Y. L. Xiong, Z. H. Zhang, S. Liu, S. Uchida, T. W. Kim, Y. B. Yuan, L. J. Zhang, Y. H. Zhou, H. W. Han, Stabilizing Perovskite Solar Cells to IEC61215:2016 Standards with over 9,000-h Operational Tracking, Joule 4(12), 2646-2660 (2020)

[4] Shuang Liu, Deyi Zhang, Yusong Sheng, Weihua Zhang, Zhaotong Qin, Minchao Qin, Sheng Li, Yifan Wang, Chenxu Gao, Qifei Wang, Yue Ming, Chao Liu, Kai Yang, Qingyi Huang, Jianhang Qi, Qiaojiao Gao, Kai Chen, Yue Hu, Yaoguang Rong, Xinhui Lu, Anyi Mei, Hongwei Han, Highly oriented MAPbI3 crystals for efficient hole-conductor-free printable mesoscopic perovskite solar cells, Fundamental Research 2(2), 276 (2021)

[5] Z. X. Qiu, A. Y. Mei, Y. Hu, Y. G. Rong, H. W. Han, Aiming at the industrialization of perovskite solar cells: Coping with stability challenge, Applied Physics Letters 119(25), 250503 (2021)