报告题目：Addressing the Challenges of Perovskite Scale Up; from Substrate to Stack

报 告 人：Dr. Trystan Watson

邀 请 人：韩宏伟 教授

报告时间： 2016年9月19日下午15:00-17:00

报告地点：武汉光电国家实验室A101

摘 要：

Whilst the photovoltaic performance of perovskite solar cells continues to increase, technology developments are also progressing in the area of printing and processing in order to realise large scale manufacture. Possible methods for both depositing the layer stack and its subsequent heating are numerous; to deliver a working and scalable device stack can require a hybrid approach where multiple techniques are employed. This paper introduces a series of technology developments required to enable the continuous fabrication of perovskite solar cells at commercial scale. These include (i) achieving appropriate crystallisation dynamics of the perovskite layer by tuning the printing process, substrate temperature and post processing and (ii) addressing the bottlenecks in manufacture such as reducing annealing times to seconds instead of hours to ensure compatibility with a continuous manufacturing environment and (iii) Choosing the right substrate, glass, metal or plastic that is suitable for the appropriate application. A layer by layer approach to coating deposition will be presented including the mechanism and process parameters required to successfully deposit the entire device stack via screen printing, slot die coating or a hybrid of both on glass and metal substrates.

CV of Invited Speaker：

Trystan started his academic career with a Chemistry degree at Swansea University spending a year out as an analytical chemist at 3M. He then transferred to the College of Engineering to carry out a Doctorate in Steel Technology. As part of this doctorate he used scanning electrochemical techniques to characterise corrosion phenomena such as Filiform corrosion on packaging substrates. He also co-invented a novel packaging coating to inhibit corrosion during high temperature heat treatments. Trystan then moved to Corus Strip Products as a product development engineer as well as a theme leader for the process technology group in the engineering doctorate scheme. It was there that he became a chartered engineer with the Institute of Materials Minerals and Mining. In 2007 Trystan returned to academia to take up a post doctoral research position on the development of dye-sensitized solar cells on metal substrates. In this time he has published work in a range of areas from fast sintering, induced scattering, in-situ monitoring of dye uptake and corrosion testing of novel substrates as well as UV photodegradation of the devices in long term testing. He is the co-inventor of a sintering method capable of reducing the titania sintering step from 30 minutes to 12 seconds. His current research activities are in the scaling of thin film photovoltaics including CZTS and organolead halide perovskites. Trystan is an Associate Professor in Photovoltaics at SPECIFIC.