Donor-acceptor oligothiophenes as low optical gap chromophores for photovoltaic applications

Ping Fang Xia, Xin Jiang Feng, Jianping Lu, Sai Wing Tsang, Raluca Movileanu, Ye Tao, Ricky M S WONG

Research output: Contribution to journalArticlepeer-review

69 Citations (Scopus)

Abstract

The synthesis and characterization of novel hole-transporting and narrow HOMO-LUMO energy gap oligothiophenes that are asymmetrically endcapped with diphenylaminofluorenyl and dicyanovinyl groups,and their potential for photovoltaic applications was reported. Malonitrile was added to a 100 mL two-necked flask containing 5a and 10 mL chloroform at room temperature. After stirring for three minutes, pyridine was added to the mixture which resulted in an immediate change in color. The combined organic extracts were dried over Na2SO4 and after removal of Na2SO4 by filtration, chloroform soluble filtrates were concentrated and precipitated with diethyl ether. The findings suggests that extended donor-acceptor oligothiophenes, which exhibit a narrow optical energy gap are promising p-type semiconducting photosensitizers for high performance photovoltaic applications.

Original languageEnglish
Pages (from-to)4810-4815
Number of pages6
JournalAdvanced Materials
Volume20
Issue number24
DOIs
Publication statusPublished - 17 Dec 2008

Scopus Subject Areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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