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Molecular design of carbazole-based dyes and the influence of Alkyl substituent on the performance of dye-sensitized solar cells

Salimi Beni, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1080/15421406.2015.1106895
  3. Publisher: Taylor and Francis Inc
  4. Abstract:
  5. Carbazole is an alternant polycyclic aromatic hydrocarbon consisting of three fused rings with a large, aromatic system, containing nitrogen atom showing extensive electron delocalization. In this work, carbazole applied as π-conjugated bridge to construct electron donor–π–electron acceptor (D–π–A) organic dyes, where barbutiric acid and thiazolidine-2,4-dione as electron acceptor. The effects of these three acceptors and length of alkyl on the performance of the DSSCs were investigated systematically along with their photophysical and photo electrochemical properties. These series of organic dyes include (B-CH, B-C B, DT-CB, DB-CB). Our investigation indicate among dyes containing butyl as same donor, DT-CB exhibited the maximum overall conversion efficiency of 1.44% and from dyes by deferent electron donor B-CH shows conversion efficiency of 1.47%
  6. Keywords:
  7. Barbutiric acid ; Dye-sensitized solar cells (DSSCs) ; Aromatic compounds ; Aromatic hydrocarbons ; Conversion efficiency ; Efficiency ; Electrons ; Polycyclic aromatic hydrocarbons ; Solar cells ; alkyl ; Alkyl substituent ; Carbazole ; Conjugated bridges ; Electron acceptor ; Electron delocalization ; Overall conversion efficiency ; Photoelectrochemical properties
  8. Source: Molecular Crystals and Liquid Crystals ; Volume 629, Issue 1 , 2016 , Pages 29-43 ; 15421406 (ISSN)
  9. URL: http://www.tandfonline.com/doi/abs/10.1080/15421406.2015.1106895?journalCode=gmcl20