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An Efficient Aniline‐Based Co‐Sensitizer for High Performance N3‐Sensitized Solar Cells
Author(s) -
Naik Praveen,
Abdellah Islam M.,
AbdelShakour M. ,
Acharaya Madhukara,
Pilicode Naveenchandra,
ElShafei Ahmed,
Adhikari Airody Vasudeva
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201802232
Subject(s) - dye sensitized solar cell , aniline , energy conversion efficiency , photochemistry , photovoltaic system , acceptor , chemistry , absorption (acoustics) , materials science , yield (engineering) , dimethylaniline , nuclear chemistry , optoelectronics , organic chemistry , electrode , ecology , physics , metallurgy , electrolyte , composite material , biology , condensed matter physics
In this work, we report a comprehensive photovoltaic investigation of a structurally simple Donor‐Acceptor (D−A) configured organic dye, N,N‐PABA as an active co‐sensitizer in DSSCs sensitized with well‐known Ru (II) based N3 dye. This effective co‐sensitizer ( N,N‐PABA ) comprises N , N ‐dimethylaniline system as a donor scaffold linked with 4‐aminobenzoic acid as an electron withdrawing functionality. In the present study, we have demonstrated the profound effect of concentration of sensitizer, i. e . N3 based dye as well as co‐sensitizer, i. e . N,N‐PABA on the photovoltaic performance characteristics of solar cells. Interestingly, the best photovoltaic performance was obtained for the co‐sensitized device fabricated using 0.2 mM of N,N‐PABA along with 0.3 mM of N3 sensitizer, in presence of 20 mM of CDCA. It displayed power conversion efficiency ( PCE) of 5.82% with J SC of 14.35 mA.cm −2 , V OC of 0.626 V and FF of 64.85%. Here, the N,N‐PABA effectively filled the absorption valley, avoided the dye aggregation and reduced the charge recombination in the co‐sensitized devices. Thus, the results ameliorate the role of efficient co‐sensitizers to yield DSSC with improved performance by the selection of a matchable co‐sensitizer at an appropriate concentration.