Molecular Engineering of Organic Sensitizers for Dye-Sensitized Solar Cell Applications.
Novel unsymmetrical organic sensitizers comprising donor, electron-conducting, and anchoring groups were engineered at a molecular level and synthesized for sensitization of mesoscopic titanium dioxide injection solar cells. The unsymmetrical organic sensitizers 3-(5-(4-(diphenylamino)styryl)thiophe...
| Publicado en: | Journal of the American Chemical Society Vol. 130; no. 19; pp. 6259 - 6267 |
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| Autores principales: | , , , , , , , , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
5/14/2008
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=32064400&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 32064400 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 5/14/2008 vid: 130 iid: 19 pid: 997 pub: American Chemical Society artinfo: ui: 32064400 10.1021/ja800066y ppf: 6259 ppct: 8 formats: tig: atl: Molecular Engineering of Organic Sensitizers for Dye-Sensitized Solar Cell Applications. aug: au: Hagberg, Daniel P. Jun-Ho Yum HyoJoong Lee de Angelis, Filippo Marinado, Tannia Karlsson, Karl Martin Humphry-Baker, Robin Licheng Sun Hagfeldt, Anders Grätzel, Michael Nazeeruddin, Md. K. affil: Organic Chemistry, Royal Institute of Technology, Teknikringen 30, 10044 Stockholm, Sweden Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland stituto CNR di Scienze e Tecnologie Molecolari (ISTM), do Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto 8, 1-06123, Perugia, Italy Physical Chemistry, Center of Molecular Devices, Royal Institute of Technology, Teknikringen 30, 10044 Stockholm, Sweden su: Biochemical research Solar cells Titanium dioxide Dye-sensitized solar cells Density functionals Direct energy conversion sug: subj: Biochemical research Solar cells Titanium dioxide Dye-sensitized solar cells Density functionals Direct energy conversion ab: Novel unsymmetrical organic sensitizers comprising donor, electron-conducting, and anchoring groups were engineered at a molecular level and synthesized for sensitization of mesoscopic titanium dioxide injection solar cells. The unsymmetrical organic sensitizers 3-(5-(4-(diphenylamino)styryl)thiophen-2-yl)-2-cyanoacrylic acid (D5), 3-(5-bis(4-(diphenylamino)styryl)thiophen-2-yl)-2-cyanoacrylic acid (D7), 5-(4-(bis(4-methoxyphenylamino)styryl)thiophen-2-yl)-2-cyanoacrylic acid (D9), and 3-(5-bis(4,4′-dimethoxydiphenylamino)styryl)thiophen-2-yl)-2-cyanoacrylic acid (D11) anchored onto TiO and were tested in dye-sensitized solar cell with a volatile electrolyte. The monochromatic incident photon-to-current conversion efficiency of these sensitizers is above 80%, and D11-sensitized solar cells yield a short-circuit photocurrent density of 13.90 ± 0.2 mA/cm, an open-circuit voltage of 740 ± 10 mV, and a fill factor of 0.70 ± 0.02, corresponding to an overall conversion efficiency of 7.20% under standard AM 1.5 sun light. Detailed investigations of these sensitizers reveal that the long electron lifetime is responsible for differences in observed open-circuit potential of the cell. As an alternative to liquid electrolyte cells, a solid-state organic hole transporter is used in combination with the D9 sensitizer, which exhibited an efficiency of 3.25%. Density functional theory/time-dependent density functional theory calculations have been employed to gain insight into the electronic structure and excited states of the investigated species. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2008 holdings: @attributes: islocal: N |
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