2012.12.21 The 4th Asian Conference on Organic Electronics (A-COE)/Efficient organic heterojunction solar cells based on squaraine and fullerene（Guo Chen, Hisahiro Sasabe, Daisuke Yokoyama, Zhongqiang Wang, Xiao-Feng Wang, Takeshi Sano, Zirou Hong, Yang Yang, Junji kido）