报告题目：An insight on oxide interlayer in organicsolar cells: From light harvesting, charge recombination and collectionperspectives

报告人：Furong Zhu教授

Departmentof Physics, Hong Kong Baptist University, 224Waterloo Road, Kowloon Tong, Hong Kong. E-mail:frzhu@hkbu.edu.hk

地点：独墅湖校区911-401

时间：2016年8月11日（星期四），上午10:00

摘要：

This talk discussesthe understanding of the organic/electrode interfacial exciton dissociation,charge recombination processes and charge collection, which underpin theoptimum cell design and performance. The charge transport and recombinationproperties in the bulk heterojunction organic solar cells are investigated using the transient photocurrent(TPC) and photo-induced charge extraction by linearly increasing voltage (photo-CELIV)techniques. Combined with light intensity-dependent J–V characteristic, it is found that the origin of unfavorableelectron collection is mainly due to the trap-limited bimolecularrecombination, resulting in the compensation of drifted photo-generated electronsat the organic/cathode interface. The undesired charge collection can beeliminated by inserting a thin metal oxide interlayer between the organic layerand electrode. Suppression of the metal oxide subgap states significantlyimproves the charge extraction and performance reproducibility.

简历：

Furong Zhu is a Professor in the Department of Physics and the associate Director for Instituteof Advanced Materials (IAM) at Hong Kong Baptist University (HKBU). He receivedhis BSc and MSc in Physics from Fudan University, Shanghai China, in 1983 and1987. He completed his Ph.D in Applied Physics at Charles Darwin University inAustralia from 1990-1993. He did his post-doctoral research in the Departmentof Electrical and Electronic Engineering at Kyoto University in Japan from1993-1995, and was a Research Fellow with the Department of Physics at MurdochUniversity in Australia from 1995-1997 working on silicon thin films derivedfrom plasma enhanced chemical vapor deposition for device application. Hejoined Institute of Materials Research and Engineering (IMRE) in Singapore in1997. Prior to HKBU, he was a Senior Scientist and a Program Manager leadingthe organic light-emitting diode (OLED) and organic photovoltaic (OPV) R&Dactivities at IMRE. His research interests include device physics, surface science, nanostructures andsemiconducting materials-oriented research for application in organic seconductor devices. He has graduated 10 PhD and 4 MPhil students. Currently there are 5 PhD students inhis group. He has published over 150 refereed journal publicationsand also filed 8patents in low processing temperature indium tinoxide (ITO) transparent electrodes for organic semiconductor devices.

                                                                                                       （报告联系人：李永舫 院士课题组）