Application of a Schottky barrier to dye-sensitized solar cells (DSSCs) with multilayer thin films of photoelectrodes

作者：Chang Ho^*; Cho Kun Ching; Kuo Chin Guo; Kao Mu Jung; Huang Kuohsiu David; Chu Kung Hui; Lin Xiu Ping

来源：Journal of Alloys and Compounds, 2011, 509: S486-S489.

DOI：10.1016/j.jallcom.2011.01.162

• Dye-sensitized solar cells (DSSCs)
• Schottky barrier
• Au nanoparties
• TiO2 nanotubes (Tnt)

This study combines Au nanoparticles with TiO2 nanoparticles to form a Schottky barrier, and applies it to the photoelectrode thin film of dye-sensitized solar cells (DSSCs). First, commercial TiO2 powder (Degussa P25) is put in the alkaline solution to prepare for TiO nanotubes (Tnt) by using hydrothermal treatment. Tnt are sintered at 550 degrees C to obtain Tnt-C550 particles. In addition, TiO2 nanoparticles (H180) prepared by subjecting Tnt to two cycles of hydrothermal treatment. H180 served as the first layer, and Tnt-C550 as the second. The third layer adopts salt reduction method to prepare for Au nanoparticles. Experimental results show that the DSSCs prepared with three layers of photoelectrode thin films (H180/Tnt-C550/Au) enhanced the light-to-electricity efficiency of DSSCs by as high as 21% (6.34-7.65%).

• 出版日期2011-6