Author/Authors :
Wang، نويسنده , , Shu and Li، نويسنده , , Yuliang and Du، نويسنده , , Chimin and Shi، نويسنده , , Zhiqiang and Xiao، نويسنده , , Shengxiong and Zhu، نويسنده , , Daoben and Gao، نويسنده , , Enqin and Cai، نويسنده , , Shengmin، نويسنده ,
Abstract :
New sensitizing dye–semiconductor system comprised of 3,4,9,10-perylene tetracarboxylic acid (PTCA) or perylene 3,4-dicarboxylic-9,10-(n-butylamine) carboximide (PNDCA) on titanium dioxide (TiO2) had been prepared and characterized. Good energy conversion efficiency was obtained. The film of PTCA on TiO2 yielded an incident photo-to-current efficiency (IPCE) of approximately 40% in the wavelength region of 440 to 530 nm, while that for PNDCA was approximately 14% at the wavelength region from 460 to 510 nm. Further studies concentrated on the doping of this system with bromine (Br2). The results indicated that the sensitizing wavelength region was red shifted, which was advantageous for solar light harvesting. Furthermore, the doped films gave lower quantum conversion efficiency than the non-doped films.
