One- and two-dimensional carbon nanomaterials as counter electrodes for dye-sensitized solar cells
One- and two-dimensional carbon nanomaterials as counter electrodes for dye-sensitized solar cells
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DOI：
10.1016/j.carbon.2011.03.031
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发表时间：
2011-08-01
期刊：
影响因子：
10.9
通讯作者：
Lin, Jia-Yi
中科院分区：
文献类型：
--
作者：
Hsieh, Chien-Te;Yang, Bing-Hao;Lin, Jia-Yi
本研究检查了配备一维碳纳米管 (CNT) 和二维石墨烯纳米片 (GN) 碳对电极的染料敏化太阳能电池 (DSSC)。碳纳米管的侧壁或两端附着不完美的缺陷，并通过X射线衍射和拉曼光谱分析GN的边缘。与基于GN的对电极相比，基于CNT的对电极在电池的入射光子到电流的效率和功率转换效率方面表现出更好的改善。电池性能的增强可归因于碳纳米管网络和球形石墨底层的结合，有利于染料吸附、催化氧化还原活性和一维电荷转移路径长度。这种碳结构作为对电极为替代金属铂对电极提供了潜在的可行性。 (C) 2011 Elsevier Ltd. 保留所有权利。
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.