Unsymmetric platinum(II) bis(aryleneethynylene) complexes as photosensitizers for dye-sensitized solar cells
Four new unsymmetric platinum(II) bis(aryleneethynylene) derivatives have been designed and synthesized, which showed good light-harvesting capabilities for application as photosensitizers in dye-sensitized solar cells (DSSCs). The absorption, electrochemical, time-dependent density functional theor...
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Published in | Chemistry, an Asian journal Vol. 7; no. 6; p. 1426 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Germany
01.06.2012
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Abstract | Four new unsymmetric platinum(II) bis(aryleneethynylene) derivatives have been designed and synthesized, which showed good light-harvesting capabilities for application as photosensitizers in dye-sensitized solar cells (DSSCs). The absorption, electrochemical, time-dependent density functional theory (TD-DFT), impedance spectroscopic, and photovoltaic properties of these platinum(II)-based sensitizers have been fully characterized. The optical and TD-DFT studies show that the incorporation of a strongly electron-donating group significantly enhances the absorption abilities of the complexes. The maximum absorption wavelength of these four organometallic dyes can be tuned by various structural modifications of the triphenylamine and/or thiophene electron donor, improving the light absorption range up to 650 nm. The photovoltaic performance of these dyes as photosensitizers in mesoporous TiO(2) solar cells was investigated, and a power conversion efficiency as high as 1.57% was achieved, with an open-circuit voltage of 0.59 V, short-circuit current density of 3.63 mA cm(-2), and fill factor of 0.73 under simulated AM 1.5G solar illumination. |
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AbstractList | Four new unsymmetric platinum(II) bis(aryleneethynylene) derivatives have been designed and synthesized, which showed good light-harvesting capabilities for application as photosensitizers in dye-sensitized solar cells (DSSCs). The absorption, electrochemical, time-dependent density functional theory (TD-DFT), impedance spectroscopic, and photovoltaic properties of these platinum(II)-based sensitizers have been fully characterized. The optical and TD-DFT studies show that the incorporation of a strongly electron-donating group significantly enhances the absorption abilities of the complexes. The maximum absorption wavelength of these four organometallic dyes can be tuned by various structural modifications of the triphenylamine and/or thiophene electron donor, improving the light absorption range up to 650 nm. The photovoltaic performance of these dyes as photosensitizers in mesoporous TiO(2) solar cells was investigated, and a power conversion efficiency as high as 1.57% was achieved, with an open-circuit voltage of 0.59 V, short-circuit current density of 3.63 mA cm(-2), and fill factor of 0.73 under simulated AM 1.5G solar illumination. |
Author | Tan, Gui-Ping Cui, Chao-Hua Lin, Jiann-T'suen Wu, Wen-Jun Chen, Yung-Chung Tian, He Lai, Lai-Fan Dai, Feng-Rong Wang, Xing-Zhu Wong, Wai-Yeung |
Author_xml | – sequence: 1 givenname: Feng-Rong surname: Dai fullname: Dai, Feng-Rong organization: Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P.R. China – sequence: 2 givenname: Yung-Chung surname: Chen fullname: Chen, Yung-Chung – sequence: 3 givenname: Lai-Fan surname: Lai fullname: Lai, Lai-Fan – sequence: 4 givenname: Wen-Jun surname: Wu fullname: Wu, Wen-Jun – sequence: 5 givenname: Chao-Hua surname: Cui fullname: Cui, Chao-Hua – sequence: 6 givenname: Gui-Ping surname: Tan fullname: Tan, Gui-Ping – sequence: 7 givenname: Xing-Zhu surname: Wang fullname: Wang, Xing-Zhu – sequence: 8 givenname: Jiann-T'suen surname: Lin fullname: Lin, Jiann-T'suen – sequence: 9 givenname: He surname: Tian fullname: Tian, He – sequence: 10 givenname: Wai-Yeung surname: Wong fullname: Wong, Wai-Yeung |
BackLink | https://www.ncbi.nlm.nih.gov/pubmed/22492546$$D View this record in MEDLINE/PubMed |
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Title | Unsymmetric platinum(II) bis(aryleneethynylene) complexes as photosensitizers for dye-sensitized solar cells |
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