One- and two-dimensional carbon nanomaterials as counter electrodes for dye-sensitized solar cells

被引:135
作者
Hsieh, Chien-Te [1 ]
Yang, Bing-Hao [1 ]
Lin, Jia-Yi [1 ]
机构
[1] Yuan Ze Univ, Dept Chem Engn & Mat Sci, Yuan Ze Fuel Cell Ctr, Tao Yuan 320, Taiwan
关键词
PERFORMANCE; NANOTUBES; FABRICATION; COMPOSITE; FILMS;
D O I
10.1016/j.carbon.2011.03.031
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
This study examines the dye-sensitized solar cells (DSSCs) equipped with 1-D carbon nanotubes (CNTs) and 2-D graphene nanosheets (GNs) carbon counter electrodes. Imperfect defects were attached to the sidewall or both the ends of the CNTs, and the edges of the GNs were analyzed by X-ray diffraction and Raman spectroscopy. When compared with the GN-based counter electrode, CNT-based counter electrodes showed a better improvement in the incident photon-to-current efficiency and power conversion efficiency of the cells. This enhancement of cell performance can be attributed to the combination of CNT network and spherical graphite bottom layer, favoring dye adsorption, catalytic redox activity, and 1-D charge-transfer path length. Such carbon configuration as counter electrode provides a potential feasibility for replacing metallic Pt counter electrodes. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3092 / 3097
页数:6
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