Schematic diagrams of the EDP, doping and the configuration of a SCNT-on-silicon heterojunction solar cell. (a) EDP SCNT film. (b) Removing Mg(OH)2 or Mg+ covered on the SCNT film in dilute nitric acid solution. (c) Doping the SCNT film in HAuCl3·H2O solution. (d) A Si substrate covered with SCNTs was slowly dipped into deionized water, and a SCNT film was peeled from the Si substrate and floated on water surface. (e) A patterned silicon wafer with a square SiO2 layer was used to pick up the SCNT film. (f) The configuration of a SCNT-on-silicon heterojunction solar cell.
Chen et al. Nanoscale Research Letters 2013 8:225 doi:10.1186/1556-276X-8-225