The mixed effect of phthalocyanine and porphyrin on the photoelectric conversion of a nanostructured TiO2 electrode

被引:22
作者
Deng, HH [1 ]
Zhou, YM
Mao, HF
Lu, ZH
机构
[1] Southeast Univ, Natl Lab Mol & Biomol Elect, Nanjing 210096, Peoples R China
[2] Southeast Univ, Dept Chem Engn, Nanjing 210096, Peoples R China
[3] Acad Sinica, Inst Organ Chem, Shanghai 200433, Peoples R China
关键词
charge-transfer states; cosensitization; heteroaggregation; mixed effects; nanostructured titanium dioxide electrodes;
D O I
10.1016/S0379-6779(98)80096-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The mixed effect of tetrasulfonated gallium phthalocyanine (GaTsPc) and tetrasulfonated zinc porphyrin (ZnTsPP) on the photoelectric conversion is reported. For the liquid junction solar cell based on the cosensitized TiO2 electrode, cosensitization greatly enhances the photocurrent response at the longer wavelength (the GaTsPc Q band) and markedly decreases the photocurrent response in the Soret band of ZnTsPP. The decrease of the Soret band of ZnTsPP is offset by the improvement of the Q band of GaTsPc, resulting in the mixed effect in the shea-circuit photocurrent. This is attributed to the formation of Pc/PP heteroaggregates on the cosensitized TiO2 electrode, resulting in the decreases of the concentration of GaTsPc dimer and the presence of the low-lying charge-transfer state. (C) 1998 Elsevier Science S.A.
引用
收藏
页码:269 / 274
页数:6
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