Controlled synthesis of various ZnO nanostructured materials by capping agents-assisted hydrothermal method for dye-sensitized solar cells

被引：126

作者：

Akhtar, M. Shaheer ^{[1
,2
]}

Khan, M. Alam ^{[1
,2
]}

Jeon, Myung Seok ^{[3
]}

Yang, O-Bong ^{[1
,2
]}

机构：

[1] Chonbuk Natl Univ, Adv Radiat Technol Ctr, Sch Semicond & Chem Engn, Jeon Ju 561756, South Korea

[2] Chonbuk Natl Univ, New & Renewable Energy Ctr, Jeon Ju 561756, South Korea

[3] KIER, Photocatalysis & Photoelectrochem Res Ctr, Taejon 305343, South Korea

来源：

ELECTROCHIMICA ACTA | 2008年 / 53卷 / 27期

关键词：

ZnO; capping agents; hydrothermal method; dye-sensitized solar cells;

D O I：

10.1016/j.electacta.2008.05.055

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this work, the morphology of ZnO materials could be controlled by changing the capping agent at constant alkali solution in hydrothermal process. ZnO nanomaterials with the structure of flowers, sheet-spheres and plates were obtained with the capping agent of ammonia, citric acid and oxalic acid, respectively. Thus prepared ZnO nanomaterials were characterized and applied as the photo-anode materials for dye-sensitized solar cell. All synthesized ZnO nanomaterials possessed high crystalline wurtzite structures grown in the (001) direction with the size of 2-4 mu m, which consist of ZnO units around 20-400 nm. Among them, Sheet-sphere ZnO showed the highest crystallinity. surface area and uniform film morphology, resulting in the significantly improved PV performance with the overall conversion efficiency of 2.61% in dye-sensitized solar cell (DSSC) fabricated with sheet-sphere ZnO. It is notable that the ZnO materials with sphere structure may be the optimal photo-anode material among various ZnO nanomaterials for DSSC. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：7869 / 7874

页数：6

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