Anchoring number-performance relationship of zinc-porphyrin sensitizers for dye-sensitized solar cells: A combined experimental and theoretical study

© 2016 Elsevier Ltd Porphyrin dyes have received much attention recently, due to their excellent photovoltaic performances in dye-sensitized solar cell (DSSC) applications. In this study, a series of zinc-porphyrin sensitizers, 1PEP, 2PEP, and 3PEP were synthesized with 1, 2, or 3 anchoring groups,...

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Main Authors: Keawin T., Tarsang R., Sirithip K., Prachumrak N., Sudyoadsuk T., Namuangruk S., Roncali J., Kungwan N., Promarak V., Jungsuttiwong S.
Format: Journal
Published: 2017
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/41172
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spelling th-cmuir.6653943832-411722017-09-28T04:15:56Z Anchoring number-performance relationship of zinc-porphyrin sensitizers for dye-sensitized solar cells: A combined experimental and theoretical study Keawin T. Tarsang R. Sirithip K. Prachumrak N. Sudyoadsuk T. Namuangruk S. Roncali J. Kungwan N. Promarak V. Jungsuttiwong S. © 2016 Elsevier Ltd Porphyrin dyes have received much attention recently, due to their excellent photovoltaic performances in dye-sensitized solar cell (DSSC) applications. In this study, a series of zinc-porphyrin sensitizers, 1PEP, 2PEP, and 3PEP were synthesized with 1, 2, or 3 anchoring groups, respectively, at meso-positions on the porphyrin ring, and their photophysical, electrochemical, and photovoltaic properties were investigated. Our results reveal that different numbers of anchoring groups significantly affect cell performance. We found that DSSC conversion efficiency decreases with increasing numbers of anchoring groups present on the porphyrin ring, and that the presence of 2 and 3 carboxyl anchors have an electron withdrawing effect on the porphyrin macrocycle. Compared to 1PEP, there is a reduction in 2PEP and 3PEP power conversion efficiency (η) values as a consequence of lower electron-injection efficiency, which is apparent from the weaker photocurrents (Jsc) exhibited by these compounds. 1 PEP, produces the greatest η value of 4.01%. We performed theoretical calculations for the dyes and dye@TiO 2 complexes to further investigate the reduction in η values that occurs with increasing numbers of anchoring groups. Calculated results reveal that 2PEP and 3PEP, bearing greater numbers of anchoring groups, suppress electron injection into the TiO 2 conduction band (CB), resulting in reduced Jsc currents and power-conversion efficiency. 2017-09-28T04:15:56Z 2017-09-28T04:15:56Z 2017-01-01 Journal 01437208 2-s2.0-84988474879 10.1016/j.dyepig.2016.09.035 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84988474879&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/41172
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description © 2016 Elsevier Ltd Porphyrin dyes have received much attention recently, due to their excellent photovoltaic performances in dye-sensitized solar cell (DSSC) applications. In this study, a series of zinc-porphyrin sensitizers, 1PEP, 2PEP, and 3PEP were synthesized with 1, 2, or 3 anchoring groups, respectively, at meso-positions on the porphyrin ring, and their photophysical, electrochemical, and photovoltaic properties were investigated. Our results reveal that different numbers of anchoring groups significantly affect cell performance. We found that DSSC conversion efficiency decreases with increasing numbers of anchoring groups present on the porphyrin ring, and that the presence of 2 and 3 carboxyl anchors have an electron withdrawing effect on the porphyrin macrocycle. Compared to 1PEP, there is a reduction in 2PEP and 3PEP power conversion efficiency (η) values as a consequence of lower electron-injection efficiency, which is apparent from the weaker photocurrents (Jsc) exhibited by these compounds. 1 PEP, produces the greatest η value of 4.01%. We performed theoretical calculations for the dyes and dye@TiO 2 complexes to further investigate the reduction in η values that occurs with increasing numbers of anchoring groups. Calculated results reveal that 2PEP and 3PEP, bearing greater numbers of anchoring groups, suppress electron injection into the TiO 2 conduction band (CB), resulting in reduced Jsc currents and power-conversion efficiency.
format Journal
author Keawin T.
Tarsang R.
Sirithip K.
Prachumrak N.
Sudyoadsuk T.
Namuangruk S.
Roncali J.
Kungwan N.
Promarak V.
Jungsuttiwong S.
spellingShingle Keawin T.
Tarsang R.
Sirithip K.
Prachumrak N.
Sudyoadsuk T.
Namuangruk S.
Roncali J.
Kungwan N.
Promarak V.
Jungsuttiwong S.
Anchoring number-performance relationship of zinc-porphyrin sensitizers for dye-sensitized solar cells: A combined experimental and theoretical study
author_facet Keawin T.
Tarsang R.
Sirithip K.
Prachumrak N.
Sudyoadsuk T.
Namuangruk S.
Roncali J.
Kungwan N.
Promarak V.
Jungsuttiwong S.
author_sort Keawin T.
title Anchoring number-performance relationship of zinc-porphyrin sensitizers for dye-sensitized solar cells: A combined experimental and theoretical study
title_short Anchoring number-performance relationship of zinc-porphyrin sensitizers for dye-sensitized solar cells: A combined experimental and theoretical study
title_full Anchoring number-performance relationship of zinc-porphyrin sensitizers for dye-sensitized solar cells: A combined experimental and theoretical study
title_fullStr Anchoring number-performance relationship of zinc-porphyrin sensitizers for dye-sensitized solar cells: A combined experimental and theoretical study
title_full_unstemmed Anchoring number-performance relationship of zinc-porphyrin sensitizers for dye-sensitized solar cells: A combined experimental and theoretical study
title_sort anchoring number-performance relationship of zinc-porphyrin sensitizers for dye-sensitized solar cells: a combined experimental and theoretical study
publishDate 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84988474879&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/41172
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