报告主题：Printing Solar Energy via Solution Processible Semiconductors
报告人：李刚(Gang LI) 教授 (香港理工大学电子与信息工程系)
Printing Solar Energy via Solution Processible Semiconductors
Department of Electronic and Information Engineering
The Hong Kong Polytechnic University
Hung Hom, Kowloon, Hong Kong SAR, China
Solar energy provides limitless resource for human being to address the terawatt energy challenge. The ideal photovoltaic (PV) technology needs to be earth abundant, non-toxic, and very low cost etc. Scientists have long dreamed of printing solar cells like newspaper, and can apply to any surface to generate electricity.
Solution processed solar cell based on organic polymer (Macromolecule) and organometal halide hybrid perovskites are both promising candidates for printable PV technologies. The advantages include low material cost, low temperature fabrication and their compatibility with printing/coating processes (roll-to-roll), high material utilization etc. They also provide attractive properties like flexibility, light weight, and transparency.
This talk will first cover some of key progresses in solution processed polymer solar cells: (a) Morphology control and understanding;1,2 (b) OPV molecule design;3 (c) Organic semiconductor/electrode interfaces;4 and (d) Device architecture investigation 4(inverted architecture, inverted tandem polymer solar cell) for high performance OPV with over 11% efficiency. Recent works on organometal halide perovskite optoelectronic devices 5 will be discussed, follow by hybrid tandem solar cells based on organic/inorganic materials. The R&D challenges & opportunities on printable solution process solar cell as viable PV technology will be discussed.
1. G. Li, V. Shrotriya, J. Huang, Y. Yao, T. Moriarty, K. Emery and Y. Yang. Nature Materials, 2005, 4, 864
2. Y. M. Yang, W. Chen, L. Dou, W.-H. Chang, H.-S. Duan, B. Bob, G. Li*, Y. Yang*. Nature Photonics 2015, 9, 190-198
3. YY Liang, Z. Xu, J. Xia, S-T Tsai, Y. Wu, G. Li*, C. Ray, L. Yu* Adv. Mater. 2010, 22. E135
4. J. B. You, L. T. Dou, K. Yoshimura, T. Kato, K. Ohya, T. Moriarty, K. Emery, C.-C. Chen, J. Gao, G. Li*, Y. Yang*, Nature Communications 2013, 4, 1446
5. H Zhou, Q Chen, G Li, S Luo, T Song, HS Duan, Z Hong, J You, Y Liu, Y. Yang. Science 2014, 345, 542-546
Gang Li is an Associate Professor in the Department of Electronic and Information Engineering, Hong Kong Polytechnic University. Before joining PolyU, he was an Associate Research Professor in the Department of Materials Science and Engineering at UCLA. His research interests are organic polymer and hybrid advanced materials, devices and physics for energy applications. He received PhD (Condensed Matter Physics) and MS (EE) degrees from Iowa State University in 2003. His postdoc research in UCLA (2004-2007) was on polymer solar cells and PLEDs. Prior to joining UCLA as a research faculty member in 2011, he spent 4 years in industry leading OPV research and development, with several world records and pilot line. He is among Thomson Reuter Highly Cited Researchers (Materials Science, 2014 -2016), with over 40,000 citations and an H-index of 58 (Google Scholar).