Facile synthesis of metal-free organic dyes featuring a thienylethynyl spacer for dye sensitized solar cells

Manal Al-Eid, Sunghwan Lim, Kwang Won Park, Brian Fitzpatrick, Chi Hwan Han, Kyungwon Kwak, Jongin Hong, Graeme Cooke

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

In this article, we report the facile synthesis of metal-free dyes 6 and 7, their solution-based optical and redox properties and their use as sensitizers in dye-sensitized solar cells (DSSCs). Our studies indicate that the addition of the second thiophene unit in dye 7, decreases the oxidation and reduction potential and consequently the band gap of the molecule compared to 6. Furthermore, increasing the length of the conjugated spacer also affects on the properties of the DSSCs, with dye 7 providing a higher power conversion efficiency compared to 6 (η = 4.49 versus 3.23%).

Original languageEnglish
Pages (from-to)197-203
Number of pages7
JournalDyes and Pigments
Volume104
DOIs
Publication statusPublished - 2014 May
Externally publishedYes

Bibliographical note

Funding Information:
MA-E thanks the Ministry of Higher Education (Saudi Arabia) for a scholarship. BF and GC thank the EPSRC. JH acknowledges Basic Science Research Program (2013-026989) and Mid-career Research Program (2012-047815) through the National Research Foundation (NRF) funded by the Ministry of Science, ICT & Future Planning (MSIP) of Korea . KW acknowledges the Chung-Ang University Excellent Student Scholarship. KK thanks for the support from Basic Science Research Program through the NRF funded by the MSIP of Korea ( 2009-0093817 ).

Keywords

  • Alkyne
  • Dye-sensitized solar cells
  • Metal-free
  • Organic dye
  • Solvatochromic
  • Thiophene

ASJC Scopus subject areas

  • General Chemical Engineering
  • Process Chemistry and Technology

Fingerprint

Dive into the research topics of 'Facile synthesis of metal-free organic dyes featuring a thienylethynyl spacer for dye sensitized solar cells'. Together they form a unique fingerprint.

Cite this