Keynote Speech:

Fully Printable Mesoscopic Solar Cells
Based on Triple Mesoscopic Layers

Prof. Hongwei Han Professor, Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China

 

Date: 13 Dec 2016 (Tue)
Time: 11:15am - 12:00nn
Venue: TY Wong Hall, 5/F, Ho Sin Hang Engineering Building, CUHK

 

Abstract:

The fully printable perovskite solar cells was developed with triple mesoscopic layers, where the TiO₂ nanocrystalline layer, the ZrO₂ spacer layer and the mesoporous carbon counter electrode were printed on a single conductive substrate layer by layer, and then filled with an organic-inorganic perovskite materials under atmospheric condition. The bifunctional molecules were introduced into the perovskite materials to enhance the performance of fully printable perovskite solar cells. The results indicated that the interface engineering plays a key role of directing the crystal formation and growth during the infiltration and precipitation of the perovskite within the mesoporous oxide scaffold. The fully printable mesoscopic perovskite solar cell presents no obvious decay within over 1000h light soaking and high efficiency of more than 15%. Meanwhile, the characterization of the mesoscopic perovkiste solar cells under the UV light soaking condition was performed. Moreover, 7 m² mesoscopic perovskite solar panel was fabricated. These results offer a promising prospect for its commercial application.

 

About speaker:

Dr. Hongwei Han is a professor at Huazhong University of Science and Technology (HUST). He re-ceived his BSc Degree in Chemistry in 2000, and PhD Degree in Physics in 2005 from Wuhan University, China, followed by postdoc at Monash University, Australia. He joined in HUST as Assistant Professor in 2008 and then named as Professor in 2010. Dr. Han’s expertise is focused on mesoscopic solar cells since 2000. He develops a printable mesoscopic solar cell based on triple mesosporous layers, which is to print nanocrystalline layer, spacer layer and counter electrode layer on a single conductive substrates layer-by-layer, and then sensitized with dye and filled with electrolyte (or filled with perovskite materials directly). In 2015 his group fabricated 7m² fully printable mesoscopic perovskite solar module. His more than 60 peer-reviewed publications in Science, Nature Chemistry, J. Am. Chem. Soc. et al. have been published and 14 Chinese Patents have been applied within past five years.