A new method to prepare CdTe solar cell based on the carbon-paste film forming is introduced in this article.According to the analysis by XRD and SIMS spectrum,it was indicated that this technology integrates deposition of the back contact and CdCl2 treatment into one process,which can not only form CuxTe layer but also activate with CdCl2 simultaneously.In addition,it can control the diffusion of Cu,which could increase the efficiency.This simple method has the possible application in CdTe sola...