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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3293
Title: Effect of electron-deficient linkers on the physical and photovoltaic properties of dithienopyrrole-based organic dyes
Authors: Kumar S.
Thomas K.R.J.
Li C.-T.
Ho K.-C.
Published in: Journal of Materials Science: Materials in Electronics
Abstract: Organic sensitizers containing dithienopyrrole donor, benzotriazole or quinoxaline in the conjugation pathway, and cyanoacrylic acid acceptor featured in a donor–acceptor-π–acceptor configuration are reported. The effect of the nature of different conjugating bridges on photophysical, electrochemical and photovoltaic properties was systematically evaluated. The incorporation auxiliary acceptors broadened the absorption spectra and modulated the excited state energy levels. The DFT calculation unraveled a significant overlap of HOMO and LUMO orbitals in benzotriazole-containing dyes and the charge transfer character for the longer wavelength absorption. Among the dyes, a dye containing benzotriazole and thiophene in the conjugation pathway exhibited highest power conversion efficiency attributable to efficient electron injection and pronounced inhibition of electron recombination. © 2017, Springer Science+Business Media, LLC.
Citation: Journal of Materials Science: Materials in Electronics (2017), 28(24): 18404-18417
URI: https://doi.org/10.1007/s10854-017-7787-4
http://repository.iitr.ac.in/handle/123456789/3293
Issue Date: 2017
Publisher: Springer New York LLC
ISSN: 9574522
Author Scopus IDs: 57197739056
57203389297
55507636700
56962715200
Author Affiliations: Kumar, S., Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
Thomas, K.R.J., Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
Li, C.-T., Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
Ho, K.-C., Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
Funding Details: Acknowledgements K.R.J.T. is thankful to CSIR (Ref. 02/(0230)/15/ EMR-II dated 05-06-2015), New Delhi and Department of Science and Technology (Ref. DST/TSG/PT/2013/09), New Delhi, India for financial support. S.K. acknowledges a Senior Research Fellowship from UGC, New Delhi. Financial support from DST, New Delhi for the
Corresponding Author: Thomas, K.R.J.; Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology RoorkeeIndia; email: krjt8fcy@iitr.ac.in
Appears in Collections:Journal Publications [CY]

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