|Title:||Effect of electron rich π-linkers on the functional properties of dyes featuring dithieno[3,2-b:2′,3′-d]pyrrole donor|
Justin Thomas, K. R.
|Published in:||Dyes and Pigments|
|Abstract:||In this paper, organic dyes containing dithienopyrrole (DTP) donor, linkers such as thiophene or dithienopyrrole and cyanoacrylic acid acceptor are reported. The impact of different Ï€-linkers on photophysical, electrochemical and photovoltaic properties is studied. The dyes containing dithienopyrrole linker showed improved light harvesting efficiency and reduced oxidation potentials than the thiophene analogs. The major absorption originates from the charge transfer transition, which shifts progressively to red region on increasing the number of heteroaromatic linkers. Additionally, the presence of N-fluorenyldithieonopyrrole in the conjugation bridge is beneficial to retard the charge recombination process. Therefore, the dye containing a dithienopyrrole linker showed the highest efficiency of 5.94% in the series attributable to its high JSC and VOC values. However, a dye containing two dithienopyrrole units in the conjugation pathway exhibited low power conversion efficiency irrespective of its intense absorption attributable to the low charge collection efficiency and reduced electron lifetime. Â© 2018 Elsevier Ltd|
|Citation:||Dyes and Pigments (2019), 160(): 614-623|
Dye sensitized solar cells
|Author Scopus IDs:||57197739056|
|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
Fan, M.-S., 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:||K.R.J.T. is thankful to Council of Scientific and Industrial Research , New Delhi, India for financial support (Ref. No. 02/(0230)/15/EMR-II dated 05-06-2015 ). We are thankful to DST for the purchase of ESI mass spectrometer through FIST grant to the Chemistry Department, IIT Roorkee. Appendix A|
|Corresponding Author:||Thomas, K.R.J.; Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology RoorkeeIndia; email: firstname.lastname@example.org|
|Appears in Collections:||Journal Publications [CY]|
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