Plenary Lecture

Solution Processed Organic Photovoltaic Cells by Electrospray Deposition Method

Professor Takeshi Fukuda
Saitama University

Abstract: Since solution-processed organic photovoltaic cells (OPVs) have been required for renewable energy source in a near future, several solution processes have been investigated by many researchers. In this presentation, I will introduce a novel solution process, called as an electrospray deposition (ESD), which is a unique tool for fabricating organic thin film devices. Nowadays, our research group already demonstrated high efficiency OPVs and organic light-emitting diodes using an additive solvent technique, which solves problems of rough surface roughness and narrow deposition area. In this spray method, the evaporation speed of solvent can be controlled by changing the droplet size and the vapor pressure of solvent, and the crystallinity and stacking structure can be controlled. Finally, inorganic nanofiber can also fabricated by the ESD, and inverted OPVs were already demonstrated.

Brief Biography of the Speaker: Takeshi Fukuda received B.E. and M.E. from Waseda University, Tokyo, Japan, in 1999 and 2001, respectively. In 2001, he joined Fujikura Ltd. He received Ph.D. degree from Shinshu University, Nagano, Japan, 2008. Since 2008, he has been the assistant professor with the department of functional materials science, Saitama University, Saitama, Japan. His research interests are organic thin film devices (organic photovoltaic cells, organic light-emitting diodes, and wavelength selective organic photoconductive devices), electrospray deposition method, and semiconductor quantum dots and related sensing materials.

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