Enhancement of the photoelectrochemical response of poly(terthiophenes) by CdS(ZnS) core-shell nanoparticles

被引：17
|
作者：
Santos, Marcos J. L. [1 ]
Ferreira, J. [1 ]
Radovanovic, E. [1 ]
Romano, Ricardo [2 ]
Alves, Oswaldo L. [2 ]
Girotto, Emerson M. [1 ]
机构：
[1] Univ Estadual Maringa, Dept Quim, BR-87020900 Maringa, Parana, Brazil
[2] Univ Estadual Campinas, UNICAMP, Inst Quim, BR-13083970 Campinas, SP, Brazil
来源：
THIN SOLID FILMS | 2009年 / 517卷 / 18期
关键词：
Polyterthiophene; Cadmium sulfate; Zinc sulfate; Nanoparticles; Photoelectrochemical properties; Hybrid; Scanning Electron Microscopy; PHOTOINDUCED ELECTRON-TRANSFER; CDSE QUANTUM DOTS; CHARGE SEPARATION; PHOTOLUMINESCENCE; TEMPERATURE; FILMS; NANOCRYSTALLITES; CONFINEMENT; GROWTH;
D O I：
10.1016/j.tsf.2009.03.170
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated the photoelectrochemical properties of hybrid films of polythiophenes poly(4,4 '' dimethoxy-3'-methyl-2,2':5',2 '' terthiophene) (PDM), poly(4,4 '' dipentoxy-3'-methyl-2,2':5',2 '' terthiophene) (PDP), and cadmium sulfide/zinc sulfide (CdS(ZnS)) core-shell nanoparticles. Although CdS(Zns) nanoparticles present enhanced exciton trapping, light harvesting by hybrid films was enhanced when compared to those of pure PDM and PDP films. This enhancement is explained in terms of electron and hole transfer mechanisms at different excitation wavelengths. The more efficient light harvesting of PDM/CdS (ZnS) when compared to that of PDP/CdS(ZnS) was attributed to its broader absorption spectrum and more efficient electron hopping. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：5523 / 5529
页数：7
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