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Dicyanovinyl-unit-induced absorption enhancement of iridium(III) complexes in long-wavelength range and potential application in dye-sensitized solar cells 被引量：1

Dicyanovinyl-unit-induced absorption enhancement of iridium(III) complexes in long-wavelength range and potential application in dye-sensitized solar cells
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摘要 Iridium complexes with dicyanovinyl-grafted phenylpyridine/1-phenylisoquinoline as ligands are synthesized and their photophysical, electrochemical, and sensitization properties in DSSCs are investigated. The iridium complexes present significantly enhanced absorption from 400 to 525 nm. The 1-phenylisoquinoline-based iridium complex show bathochromic-shift emission in DMSO solution compared with their phenylpyridine-based counterpart, while their absorption response and photoluminescence peak in solid show little difference despite extension of the conjugated system. Using DSSCs, the conversion efficiency of 0.62% and open-circuit current of 1.4 m A/cm2 is achieved. The poor performance is attributed to the excited-state properties of iridium complexes according to the TD-DFT calculation. Iridium complexes with dicyanovinyl-grafted phenylpyridine/l-phenylisoquinoline as ligands are synthesized and their photo- physical, electrochemical, and sensitization properties in DSSCs are investigated. The iridium complexes present significantly enhanced absorption from 400 to 525 nm. The 1-phenylisoquinoline-based iridium complex show bathochromic-shift emission in DMSO solution compared with their phenylpyridine-based counterpart, while their absorption response and photoluminescence peak in solid show little difference despite extension of the conjugated system. Using DSSCs, the conversion efficiency of 0.62% and open-circuit current of 1.4 mA/cm2 is achieved. The poor performance is attributed to the excited-state properties of iridium complexes according to the TD-DFT calculation.
作者 Dongdong Wang Hua Dong Xiaoyu Zhang Yong Wu Shaohua Shen Bo Jiao Zhaoxin Wu Min Gao Geng Wang
机构地区 Department of Applied Chemistry Key Laboratory for Physical Electronics and Devices of the Ministry of Education Key Laboratory for Advanced Materials International Research Center for Renewable Energy
出处 《Science China Chemistry》 SCIE EI CAS CSCD 2015年第4期658-665,共8页 中国科学（化学英文版）
基金 supported by the Fundamental Research Funds for the Central Universities(08143034) the National Basic Research Program of China(2013CB328705,2013CB328706) the National Natural Science Foundation of China(61275034,61106123)
关键词 染料敏化太阳能电池 铱配合物 氰基乙烯基 吸收反应 波长范围 应用 引发 单元 dicyanovinyl group, iridium complexes, absorption response, dye-sensitized solar cell
分类号 O627 [理学—有机化学] TM914.4 [电气工程—电力电子与电力传动]
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Science China Chemistry
2015年 第4期

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