Perovskite Solar Cells – Opportunities and Challenges
Date:
25 Oct, 2018 (Thu)
Time:
10:30 am
Location:
Room 603, Chow Yei Ching Building

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Speaker

Prof. Yi-Bing Cheng
State Key Laboratory of Silicate Materials for Architectures
Wuhan University of Technology, Wuhan, China

Abstract

Prof. Yi-Bing Cheng

Organic-inorganic hybrid perovskite solar cell is a new type of thin film photovoltaic technology and has achieved extraordinary improvements in power conversion efficiency in a relatively short time. It has potential to be a high efficiency, low cost alternative photovoltaic technology. The hybrid perovskite is a unique type of optoelectronic material. Its bandgap can be readily adjusted by compositions; it has high light absorption coefficient, efficient charge separation and long charge diffusion length. The solution based system is attractive for processing of devices using a variety of techniques, such as printing, and it can be made into flexible solar cells on plastic substrates. It can also be manufactured by vacuum deposition at relatively low temperature. However, there are a number of challenges before the technology’s commercialization, for example, difficulties in forming good quality large area thin films, internal ion movements, device stability and lead poisoning etc. In this presentation, I will talk about some recent progress in dealing with these challenges and activities in scaling up perovskite solar cell modules, including the work at Wuhan University of Technology.

 

Biography of the Speaker:
Yi-Bing Cheng is a Thousand Talents professor at Wuhan University of Technology, China and an Adjunct professor in the Faculty of Engineering, Monash University, Australia. He is an elected Fellow of the Australian Academy of Technological Sciences and Engineering. He completed his undergraduate (1978) and Master (1983) studies at Wuhan University of Technology, China and received a PhD degree from University of Newcastle-upon-Tyne, U.K. in 1989. He was an academic staff in the Department of Materials Science and Engineering, Monash University, Australia between October 1991 and March 2018. He specialises in inorganic materials and composites, and interests in applied research for materials development and applications. He has worked in a number of research areas covering glass, glass-ceramics, structural ceramics, ultra-high temperature ceramics and ceramic-polymer composites. He was an inventor of the world first fire-performance electrical cables, which received a number of awards in Australia. One of his research areas in the last 15 years has been in solution based thin film solar cells, which received a significant amount of funding from the Australian government and industry. He worked in dye sensitised solar cells (DSSC) for many years and developed technologies for printing of flexible DSSC devices. His current research has been mainly focused on the development of materials and processing technologies for perovskite solar cells. He has jointly published over 520 research papers, including papers in Nature Materials, Nature Energy, Nature Photonics, Nature Communications, and 20 patents. His papers have been cited for over 12,000 times and gained an h-index of 55 (Web of Science). He was a Thousand Talents Professor and Director of the Michael Grätzel Center for Mesoscopic Solar Cells at the Wuhan National Laboratory for Optoelectronics between 2010 and 2014, before joining Wuhan University of Technology in 2015.

 

All are welcome!


Organizer

Prof. W.C.H. Choy

Most seminars are open to the general public, free of charge, unless otherwise stated. Registration is not required. Arrangement for car parking facilities on campus please contact us for details.

For enquiries, please contact:
Department of Electrical and Electronic Engineering,
Room 601, Chow Yei Ching Building,
Pokfulam Road, Hong Kong
Tel: (852) 2859 7093
Email: seminar@eee.hku.hk