Retracted Article: Novel ethynyl-pyrene substituted phenothiazine based metal free organic dyes in DSSC with 12% conversion efficiency

Bhanumathi Nagarajan; Suman Kushwaha; Ramachandran Elumalai; Sudip Mandal; Kothandaraman Ramanujam; Dhamodharan Raghavachari

doi:10.1039/C7TA01744H

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Retracted Article: Novel ethynyl-pyrene substituted phenothiazine based metal free organic dyes in DSSC with 12% conversion efficiency†

Bhanumathi Nagarajan,^a Suman Kushwaha,^a Ramachandran Elumalai,^a Sudip Mandal,^a Kothandaraman Ramanujam

*^a and Dhamodharan Raghavachari

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
E-mail: rkraman@iitm.ac.in, damo@iitm.ac.in

Abstract

Six new dyes based on phenothiazine conjugated to an ethynyl-pyrene moiety are synthesized and characterized. Dye-sensitized solar cells are fabricated using these dyes with and without a co-adsorbent, chenodeoxychloicacid. Simple molecular engineering around the phenothiazine moiety enabled a maximum of 12% photoconversion efficiency with one of the dyes.