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Amphiphilic Ruthenium(II) Terpyridine Sensitizers with Long Alkyl Chain Substituted β-Diketonato Ligands : An Efficient Coadsorbent-Free Dye-Sensitized Solar Cells
Joint Authors
Karim, Mohammad Rezaul
Singh, Surya Prakash
Han, Liyuan
Islam, Ashraful
Yanagida, Masatoshi
Source
International Journal of Photoenergy
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-01-17
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Three alkyl-substituted β-diketonato-ruthenium(II)-polypyridyl sensitizers with different alkyl chain lengths, [Ru(tctpy)(tfpd)(NCS)] (A1), [Ru(tctpy)(tfdd)(NCS)] (A2), and [Ru(tctpy)(tfid)(NCS)] (A3), were designed and synthesized for dye-sensitized solar cells (DSCs) to investigate the effect of bulky alkyl chain substituents on the photovoltaic performances (where tctpy = 4,4′,4′′-tricarboxy-2,2′:;6′,2′′-terpyridine, tfpd =1,1,1-trifluoropentane-2,4-dione, tfdd = 1,1,1-trifluorodecane-2,4-dione, and tfid =1,1,1-trifluoroicosane-2,4-dione).
These complexes exhibit a broad metal-to-ligand charge transfer absorption band over the whole visible range extending up to 950 nm.
All complexes were examined in the presence and absence of the coadsorbent deoxycholic acid (DCA) in dye-bath solutions.
These sensitizers, when anchored to nanocrystalline TiO2 films, achieve efficient sensitization to TiO2 electrodes.
Under standard AM 1.5 sunlight, the complex A3 containing long alkyl chain length of C16 yielded a short-circuit photocurrent density of 18.0 mA/cm2, an open-circuit voltage of 0.64 V, and a fill factor of 0.66, corresponding to an overall conversion efficiency of 7.6% in the absence of DCA.
The power conversion efficiency of A1 sensitized DSCs was significantly increased upon the addition of DCA as compared to that in the absence of DCA.
However, the photovoltaic performance of A3 was not dependent on DCA at all, probably due to the inherent structural nature of the A3 molecule.
American Psychological Association (APA)
Islam, Ashraful& Singh, Surya Prakash& Yanagida, Masatoshi& Karim, Mohammad Rezaul& Han, Liyuan. 2011. Amphiphilic Ruthenium(II) Terpyridine Sensitizers with Long Alkyl Chain Substituted β-Diketonato Ligands : An Efficient Coadsorbent-Free Dye-Sensitized Solar Cells. International Journal of Photoenergy،Vol. 2011, no. 2011, pp.1-7.
https://search.emarefa.net/detail/BIM-496342
Modern Language Association (MLA)
Islam, Ashraful…[et al.]. Amphiphilic Ruthenium(II) Terpyridine Sensitizers with Long Alkyl Chain Substituted β-Diketonato Ligands : An Efficient Coadsorbent-Free Dye-Sensitized Solar Cells. International Journal of Photoenergy No. 2011 (2011), pp.1-7.
https://search.emarefa.net/detail/BIM-496342
American Medical Association (AMA)
Islam, Ashraful& Singh, Surya Prakash& Yanagida, Masatoshi& Karim, Mohammad Rezaul& Han, Liyuan. Amphiphilic Ruthenium(II) Terpyridine Sensitizers with Long Alkyl Chain Substituted β-Diketonato Ligands : An Efficient Coadsorbent-Free Dye-Sensitized Solar Cells. International Journal of Photoenergy. 2011. Vol. 2011, no. 2011, pp.1-7.
https://search.emarefa.net/detail/BIM-496342
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-496342