In this paper, ZnO nanowire (NW) arrays were synthesized on glass substrates by chemical vapor deposition (CVD).Such substrates were used to photo-electrode of the dye sensitized solar cells (DSSCs).The different structures of the ZnO nanowire arrays were discussed how to improve the efficiency of the DSSCs.In this paper,We used three different structures (ITO,AZO and GZO)to growth the ZnO nanowire arrays. The results revealed that the thickness of ZnO nanowire arrays were related to the adsorptive quality of Dye. And the photo-current and efficiency were improved when the adsorptive quality of Dye were increased. To prove that the efficiency were related to the total area of the ZnO nanowire arrays, the thickness and efficiency of the once growth ZnO nanowire arrays were compared with twice growth ZnO nanowire arrays. We find that twice growth ZnO nanowire arrays has better thickness and efficiency than once growth. So We deduction that better thickness of ZnO nanowire arrays has the better efficiency.
The photo-current and efficiency were low because of the bad conductivity of the ZnO nanowires. To improve the conductivity of the ZnO nanowires,In has been doped in ZnO nanowires. The results revealed that appropriate In doped for the ZnO nanowires can reduce the resistivity and improve the efficiency of DSSCs. But, the crystal structure of ZnO Will be destroyed if there are much In doped.