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A New Series of Heteroleptic Cd(II) Diimine‐Ferrocenyl Dithiocarbamate Complexes which Successfully Co‐Sensitizes TiO 2 Photoanode with Ru N719 Dye in DSSC
Author(s) -
Manar Krishna K.,
Srivastava Pankaj,
Drew Michael G. B.,
Singh Nanhai
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701775
Subject(s) - dithiocarbamate , diimine , dye sensitized solar cell , chemistry , photochemistry , crystallography , stereochemistry , organic chemistry , electrode , electrolyte , catalysis
New heteroleptic complexes of the form [Cd(diimine)(Fcdtc) 2 ] (diimine= 1,10‐phenanthroline (phen), Fcdtc=N‐ferrocenyl‐N‐pyridin‐3‐ylmethyl dithiocarbamate (KL1) Cd 1 ; 2,2’‐bipyridyl (bpy), N‐ferrocenyl‐N‐pyridin‐4‐ylmethyl dithiocarbamate (KL2) Cd 2 ; bpy, (KL1) Cd 3 and phen, (KL2) Cd 4 ) have been synthesised and characterized by elemental analyses, spectroscopy (IR, UV‐Vis., 1 H and 13 C { 1 H} NMR) and their structures have been revealed by X‐ray crystallography. These complexes have been explored as co‐sensitizers with N719 over TiO 2 for application as dye sensitized solar cells (DSSC) photoanodes. The use of these complexes as co‐sensitizers resulted in extended UV‐Visible spectral response, greater dye loading, enhanced electron life time, reduced charge recombination and thermodynamically more facile charge transfer in the DSSC. Among all the co‐sensitized cells (Cd 1 /N719, Cd 2 /N719, Cd 3 /N719 and Cd 4 /N719), the Cd 1‐ based cell demonstrated not only the highest incident photon to current efficiency (IPCE) 47% but the obtained current conversion efficiency 3.84%, was much higher than that of the N719 based cell (2.70%) under the same illumination condition.