ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China (No.60736005 and No.60425101-1), the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (No.60721001), the Provincial Program (No.9140A02060609DZ0208), the Program for New Century Excellent Talents in University (No.NCET- 06-0812), the Project Sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (No.GGRYJJ08P 05), and the Young Excellence Project of Sichuan (No.09ZQ026-074).
The role of bathophenanthroline (Bphen) as a buffer layer inserted between fullerene (C60) and Ag cathode in organic photovoltaic (OPV) cell was discussed. By introducing Bphen as a buffer layer with thicknes fr...