F16CuPc作为阳极缓冲层对有机太阳能电池性能的显著改善

Abstract

Significant enhanced performance of organic solar cells with F16CuPc as the anode buffer layer was demonstrated.On the one hand,the adopted F16CuPc anode buffer layer leads to the oriented growth of the CuPc molecules,resulting in the increased crystallinity and hence the hole mobility of the CuPc film.On the other hand,a dipole layer can be formed in the F16CuPc/CuPc interface,which can improve the hole extraction efficiency from CuPc to ITO.Owing to these tow effects,the charge carriers collection efficiency was raised,while the series resistance and the photogenerated charge carrier recombination probability were decreased.Consequently,the short-circuit current and the fill factor were increased.Meanwhile,the built-in potential of the devices was also increased by the introduction of F16CuPc,leading to an increased open-circuit voltage.