Structural optimization of thiophene-(N-aryl)pyrrole-thiophene-based metal-free organic sensitizer for the enhanced dye-sensitized solar cell performance

Title
Structural optimization of thiophene-(N-aryl)pyrrole-thiophene-based metal-free organic sensitizer for the enhanced dye-sensitized solar cell performance
Author(s)
강미숙김아영현명호[현명호]Vellaiappillai Tamilavan[Vellaiappillai Tamilavan]김혜빈[김혜빈]
Keywords
EFFICIENT MOLECULAR PHOTOVOLTAICS; ACCEPTOR DYES; COUMARIN-DYE; DONOR; DESIGN; FILMS
Issue Date
201401
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
TETRAHEDRON, v.70, no.2, pp.371 - 379
Abstract
In this study, we prepared thiophene-(N-aryl)pyrrole-thiophene (TPT)-based two new metal-free organic sensitizers (TPTDYE 2 and TPTDYE 3) with the aim of improving the dye-sensitized solar cell (DSSC) performance of recently reported TPT-based organic sensitizer (TPTDYE 1). The molecular structure of TPTDYE 1 was tuned by decreasing the distance between the donor and acceptor groups (TPTDYE 2) or by introducing a fluoride atom on the phenyl ring near to the electron accepting cyanoacrylic acid group (TPTDYE 3). The photophysical and electrochemical studies of the newly synthesized sensitizers revealed that their absorption and energy levels were significantly altered compared to those of TPTDYE 1. The DSSC performance of each of sensitizers TPTDYE 2 and TPTDYE 3 was investigated with and without coadsorbent and compared with those of TPTDYE 1 and standard N719. Between the two DSSCs, the one sensitized by TPTDYE 2 offered greatly improved solar to electrical energy conversion efficiency of 6.85% without coadsorbent and 7.06% with coadsorbent The overall conversion efficiency of the DSSC sensitized by TPTDYE 2 without and with coadsorbent was found to be improved by 32% and 20%, respectively, compared with that of the DSSC sensitized by TPTDYE 1 and almost equal (98.7%) to that of the standard cell prepared from N719 under an identical condition. (C) 2013 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/33547http://dx.doi.org/10.1016/j.tet.2013.11.050
ISSN
0040-4020
Appears in Collections:
이과대학 > 화학생화학부 > Articles
문과대학 > 중국언어문화학과 > Articles
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