应化学化工学院、甘肃省有色金属化学与资源利用重点实验室邀请，美国阿克隆大学高分子科学与工程学院巩雄副教授来我校进行学术交流并做学术报告，欢迎参加。
报 告 人： 巩雄 副教授
报告题目： Solution-Processed Perovskite Hybrid Solar Cells
报告时间： 2015年6月24日（星期三）上午9:30
报告地点： 第二化学楼101报告厅
巩雄副教授简历：
Currently, Dr. Gong is an Associate Professor in the Department of Polymer Engineering at the College of Polymer Science
and Polymer Engineering, The University of Akron. He is also an Adjunct Chair Professor in the State Key Laboratory of
Luminescence Materials and Devices at the South China University of Technology, P. R. China, and holds a Chief Scientist
position at the Heeger Beijing R&D Center. Dr. Gong received his B. Sc. from Northwest Normal University, M. Sc. from
Lanzhou University and Ph. D. from Nankai University. He did post-doctoral with Prof. Alan J. Heeger in the University
of California Santa Barbara. Dr. Gong received many international and national awards including the top 1% mostly cited
scientists in the field of materials science between 2002 and 2012 reported by Thomson Reuters, USA NSF CAREER award,
3M Faculty Award and NSF of China Oversea Outstanding Chinese Youngest Scientist Award. He has accomplished over 150
articles published in the peer reviewed journals including in Science and Nature, Advanced Materials, Energy and Environmental
Science, JSCS with a peer citation over 15,000 times. He earned an H-index of 48. He also contributed 33 granted and pending
patents and 8 book chapters.
报告内容简介：
In the past five years, methylammonium lead halide (MAPbX3) perovskites as novel photovoltaic materials have been
attracted much attention due to their super optical and electrical properties. Over 20% power conversion efficiency (PCE) has been
reported from perovskite-based hybrid solar cells (pero-HSCs), but shorter diffusion length of the electrons than that of the
holes is one of the major limitations to further boost efficiency of pero-HSCs. To facilitate electron extraction efficiency in pero-HSCs and make it comparable to that of hole, we, for the first time, demonstrate bulk heterojuncion (BHJ) pero-HSCs
fabricated by mixture of perovskite materials with water-soluble fullerene derivatives rather than pristine perovskite materials.
As compared with planar heterojunction pero-HSCs, more than 22% enhancement in PCE is observed from BHJ pero-HSCs.
Therefore, our strategy of using BHJ structure in pero-HSCs offers an efficient and simple way to further boost the device p
erformance. In addition, I will also share with you how to control the film quality of perovskite active layer and how to reengineer
the interface between perovskite active layer and the hole extraction layer and the electron layer to boost the PCE of pero-HSCs.
