Hin Lap Yip

Perovskite & Organic devices

Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR, China

Email: a.yip@cityu.edu.hk

Biography

Hin-Lap Yip joined the Department of Materials Science and  Engineering and School of Energy and Environment at City University of Hong Kong as Professor in 2021. He also serves as the Associate Director of Hong Kong Institute for Clean Energy. In 2022, he was elected as a member of the Hong Kong Young Academy of Sciences. From 2013-2020,  he  was  a  faculty  in  the  State  Key  Laboratory  of  Luminescent  Materials  and Devices  and  the  School  of Materials  Science  and  Engineering  (MSE) in  South  China University of Technology (SCUT). He got his BSc (2001) and MPhil (2003) degrees in Materials Science from the Chinese University of Hong Kong (CUHK), and completed his PhD degree in MSE in 2008 under the guidance of    Prof. Alex Jen at the University of Washington (UW), Seattle. His current research focuses on the use of an integrated approach  combining  materials,  interface,  and  device  engineering  to  improve  both polymer  and  perovskite  optoelectronic  devices.  He  had  published  more  than  250 scientific papers with citations ~ 32000 and a H-index of 92  (Google Scholar: Updated by May/2022). He was also honored as ESI “Highly Cited Researcher” by 2014-2021. In 2018, He was appointed as the Director for the Innovation Center for Printed Organic Photovoltaics, which focuses on translational research and commercialization of new generation photovoltaic technology.    He currently serves as an editorial board member of Science Bulletin and Nanomaterials, and  the international advisory board member for Matter. 

Abstract for Presentation

Molecularly Engineered Interfaces in Metal Halide Perovskite Solar Cells

Over the past decade, organic-inorganic hybrid perovskites have  emerged as a new class of solution processable semiconductor for many optoelectronic applications, such as solar cells and light emitting devices. Their electronic, electrical and optical properties can be controlled by tuning their compositions and crystal structures. In this talk, I will discuss how to control the dimension and nanostructure of perovskites by introducing small  molecules  with  tailored  functional  groups  that  can  strongly  interact  with  the perovskite  crystals.  Using  such  strategy,  we  have  developed  very  stable  quasi-2D perovskite  films with  tunable interfacial  electronic  structures and the corresponding solar cells show much improved stability and efficiency [1-2] . I will also discuss how to lean on the experience in interface engineering for  organic solar cells and design new electron and hole transport conjugated materials with proper interfacial properties to provide  surface  defeat  passivation  functionality  and  improve  the  charge  collection efficiency  of  perovskite  solar  cells [3-4] ,  as  well  as  organic/perovskite  tandem  solar cells. [5]

References

[1]  Q. Yao, H.-L. Yip, et al, Adv. Mater. ,322 (2020) 2000571.

[2]  T. Niu, H.-L. Yip, et al, Adv. Energy Mater., 12 (2022) 2102973.  

[3]  J. Wang, Z. Zhu, H.-L. Yip, A. K.-Y. Jen, et al, Nat. Commun., 11 (2020) 177.

[4]  T. Niu, Q. Xue, Y. Li, H.-L. Yip, et al, Joule, 5 (2021) 249.

[5]  Y. Xue, Q. Yao, H.-L. Yip, et al, Adv. Funct. Mater., 32 (2022) 2112126.