Synthesis and Structure-Property Correlation in Shape-Controlled ZnO Nanoparticles Prepared by Chemical Vapor Synthesis and their Application in Dye-Sensitized Solar Cells

被引：65

作者：

Bacsa, Revathi R. ^{[1
,2
]}

Dexpert-Ghys, Jeannette ^{[3
]}

Verelst, Marc ^{[3
]}

Falqui, Andrea ^{[4
]}

Machado, Bruno ^{[5
]}

Bacsa, Wolfgang S. ^{[3
]}

Chen, Peter ^{[6
]}

Zakeeruddin, Shaik M. ^{[6
]}

Graetzel, Michael ^{[6
]}

Serp, Philippe ^{[1
,2
]}

机构：

[1] Univ Toulouse 2, CNRS, LCC UPR 8241, F-31077 Toulouse, France

[2] INPT, UPS, F-31077 Toulouse, France

[3] CNRS, Ctr Elaborat Mat & Etud Struct, F-31055 Toulouse, France

[4] Ist Italiano Tecnol, Electron Microscopy Lab, Genoa, Italy

[5] Univ Porto, Fac Engn, Dept Engn Quim, Lab Catilise & Mat, P-4200465 Oporto, Portugal

[6] Swiss Fed Inst Technol, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland

来源：

ADVANCED FUNCTIONAL MATERIALS | 2009年 / 19卷 / 06期

关键词：

ZINC-OXIDE NANOSTRUCTURES; SPECTRAL PROPERTIES; N-TYPE; GROWTH; FILMS; DEPOSITION; PHOTOLUMINESCENCE; NANOWIRES; PRESSURE; SIZE;

D O I：

10.1002/adfm.200801049

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here, the large scale synthesis of nanocrystalline ZnO spheres and tetrapods in the size range of 8-40 nm by chemical vapor synthesis using zinc metal as precursor is described. A detailed study of the effect of experimental parameters on the morphology and yield is presented. High-resolution transmission electron microscopy images of the tetrapods show that they are formed by the self assembly of four nanorods in the vapor phase. The tetrapods have optical absorption coefficients that are one order of magnitude greater than the spheres and show intense UV luminescence whereas the spheres show only the green emission. The observed differences in the optical properties are related to the presence of surface defects present in the nanospheres. The tetrapods have increased efficiencies for application in dye sensitized solar cells when compared to spheres.

引用

页码：875 / 886

页数：12

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