A new structure of Gr–GaAs solar cell using P3HT as hole transport layer has been reported.
The performances of Gr–GaAs solar cells get significantly increased due to the introduction of P3HT layer.
Initial PCE of 6.84% has been obtained for the Gr–GaAs solar cells.
By TFSA doping and antireflective film application, a highest efficiency of 13.7% has been achieved for Gr–GaAs solar cells.