Relationship between the molecular orbital structure of the dyes and photocurrent density in the dye-sensitized solar cells

被引:74
作者
Jose, R. [1 ]
Kumar, A. [1 ]
Thavasi, V. [1 ]
Fujihara, K. [1 ]
Uchida, S. [2 ]
Ramakrishna, S. [3 ]
机构
[1] Natl Univ Singapore, NUSNNI, Singapore 117576, Singapore
[2] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan
[3] Natl Univ Singapore, Singapore 119077, Singapore
关键词
D O I
10.1063/1.2957988
中图分类号
O59 [应用物理学];
学科分类号
摘要
Through a combined experimental and theoretical investigation we have shown that the efficiency of charge injection in dye-sensitized solar cells constituted from dyes having a single carboxylic group is determined by the extent to which the lowest unoccupied molecular orbital (LUMO) of the dye falls on its anchoring group. This conclusion was brought by calculating the LUMO surface of three indoline dyes and comparing the conversion efficiency of dye-sensitized solar cells fabricated using those dyes. The Ruthenium based N3 dye was used as standard both in the calculation and experiment. (C) 2008 American Institute of Physics.
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页数:3
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