Dr. Tetsuhiko Miyadera, a researcher at National Institute of Advanced Industrial Science and Technology, and his coworkers achieved highly controlled organic solar cell architecture by means of crystal growth technique. The technique known as heteroepitaxy was applied to the co-evaporation of donor and acceptor materials. The ideal film morphology with high crystallinity was achieved, where carriers can be transported smoothly. As a result, the solar-cell power conversion efficiency was doubled from 1.85 % to 4.15 %. Further improvement of organic solar cells will accelerate the realization of flexible and low-cost solar panels.
Research Area: “Photoenergy conversion systems and materials for the next generation solar cells”
Research Theme:“Heteroepitaxy for the achievement of high efficiency organic-single-crystal solar cells”
Zhiping Wang, Tetsuhiko Miyadera, Toshihiro Yamanari, and Yuji Yoshida. “Templating effects in molecular growth of blended films for efficient small-molecule photovoltaics ”
ACS Applied Materials & Interfaces, Published online 14 May 2014
Tetsuhiko Miyadera, Ph.D.
Researcher, The Research Center for Photovoltaics Technologies, National Institute of Advanced Industrial Science and Technology (AIST)
Masashi Furukawa and Sofia Suzuki
Green Innovation Group, Department of Innovation Research, JST