Photoelectrochemical properties of Zn(II) phthalocyanine/ZnO nanocrystals heterojunctions: nanocrystal surface chemistry effect

被引：22

作者：

Ingrosso, C

Petrella, A

Curri, ML

Striccoli, M

Cosma, P

Cozzoli, PD

Agostiano, A

机构：

[1] Univ Bari, Dipartimento Chim, Bari, Italy

[2] Univ Bari, Dipartimento Chim, CNR, IPCF,Sez Bari, Bari, Italy

来源：

APPLIED SURFACE SCIENCE | 2005年 / 246卷 / 04期

关键词：

dye-sensitized film; colloidal nanocrystals; ZnO; Zn(II) phthalocyanine; photoactivity;

D O I：

10.1016/j.apsusc.2004.11.041

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hetero-junctions prepared by deposition of unsubstituted Zn(II) phthalocyanines (Zn(II)Pc) onto a film of colloidal ZnO nanocrystals, were studied. Photoelectrochemical measurements were performed on the sensitized nanocrystalline ZnO films deposited onto optically transparent electrodes, to characterize the photoactivity of the heterojunction. A comparison between ZnO nanocrystals prepared by using a hydrolytic and non-hydrolytic route was performed in order to investigate the effect of nanocrystal surface chemistry on the photoelectrical response. The photoactivity was found to be significantly enhanced when non-hydrolytically prepared nanocrystals were used to form the heterojunction. (c) 2004 Elsevier B.V. All rights reserved.

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收藏

页码：367 / 371

页数：5

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