Ethynyl thiophene-appended unsymmetrical zinc porphyrin sensitizers for dye-sensitized solar cells

P. Silviya Reeta; L. Giribabu; S. Senthilarasu; Min Hung Hsu; D. Kishore Kumar; Hari M. Upadhyaya; Neil Robertson; Tracy Hewat

doi:10.1039/c3ra47948j

Ethynyl thiophene-appended unsymmetrical zinc porphyrin sensitizers for dye-sensitized solar cells

P. Silviya Reeta, L. Giribabu^*, S. Senthilarasu, Min Hung Hsu, D. Kishore Kumar, Hari M. Upadhyaya, Neil Robertson, Tracy Hewat

^*Corresponding author for this work

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Four unsymmetrical porphyrins of A2B donor-π-acceptor type have been designed, synthesized, characterized and their photovoltaic properties explored. Polycyclic aromatic hydrocarbons (PAH), such as pyrene or fluorene, act as a donor, the porphyrin is the π-spacer, appended with an ethynyl thiophene linker, and either cyanoacrylic acid or malonic acid acts as the acceptor. All of the compounds were characterized by ¹H NMR and mass spectrometry. UV-Vis absorption spectra and B or Soret (λ_ex at 440 nm for the four sensitizers reported) band-excited fluorescence emission spectra were also obtained. The electrochemical properties suggest that the first oxidation is ring-centred, which is supported by in situ spectro-electrochemical and DFT computational studies. The synthesized porphyrins were applied in dye-sensitized solar cells (DSSCs). A conversion efficiency of up to 3.14%was realized for PYR-Por-MA under our experimental conditions.

Original language	English
Pages (from-to)	14165-14175
Number of pages	11
Journal	RSC Advances
Volume	4
Issue number	27
DOIs	https://doi.org/10.1039/c3ra47948j
Publication status	Published - 2014

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@article{b3cd61c57c01496881cec265184cbb22,

title = "Ethynyl thiophene-appended unsymmetrical zinc porphyrin sensitizers for dye-sensitized solar cells",

abstract = "Four unsymmetrical porphyrins of A2B donor-π-acceptor type have been designed, synthesized, characterized and their photovoltaic properties explored. Polycyclic aromatic hydrocarbons (PAH), such as pyrene or fluorene, act as a donor, the porphyrin is the π-spacer, appended with an ethynyl thiophene linker, and either cyanoacrylic acid or malonic acid acts as the acceptor. All of the compounds were characterized by 1H NMR and mass spectrometry. UV-Vis absorption spectra and B or Soret (λex at 440 nm for the four sensitizers reported) band-excited fluorescence emission spectra were also obtained. The electrochemical properties suggest that the first oxidation is ring-centred, which is supported by in situ spectro-electrochemical and DFT computational studies. The synthesized porphyrins were applied in dye-sensitized solar cells (DSSCs). A conversion efficiency of up to 3.14%was realized for PYR-Por-MA under our experimental conditions.",

author = "Reeta, {P. Silviya} and L. Giribabu and S. Senthilarasu and Hsu, {Min Hung} and Kumar, {D. Kishore} and Upadhyaya, {Hari M.} and Neil Robertson and Tracy Hewat",

year = "2014",

doi = "10.1039/c3ra47948j",

language = "English",

volume = "4",

pages = "14165--14175",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

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T1 - Ethynyl thiophene-appended unsymmetrical zinc porphyrin sensitizers for dye-sensitized solar cells

AU - Reeta, P. Silviya

AU - Giribabu, L.

AU - Senthilarasu, S.

AU - Hsu, Min Hung

AU - Kumar, D. Kishore

AU - Upadhyaya, Hari M.

AU - Robertson, Neil

AU - Hewat, Tracy

PY - 2014

Y1 - 2014

N2 - Four unsymmetrical porphyrins of A2B donor-π-acceptor type have been designed, synthesized, characterized and their photovoltaic properties explored. Polycyclic aromatic hydrocarbons (PAH), such as pyrene or fluorene, act as a donor, the porphyrin is the π-spacer, appended with an ethynyl thiophene linker, and either cyanoacrylic acid or malonic acid acts as the acceptor. All of the compounds were characterized by 1H NMR and mass spectrometry. UV-Vis absorption spectra and B or Soret (λex at 440 nm for the four sensitizers reported) band-excited fluorescence emission spectra were also obtained. The electrochemical properties suggest that the first oxidation is ring-centred, which is supported by in situ spectro-electrochemical and DFT computational studies. The synthesized porphyrins were applied in dye-sensitized solar cells (DSSCs). A conversion efficiency of up to 3.14%was realized for PYR-Por-MA under our experimental conditions.

AB - Four unsymmetrical porphyrins of A2B donor-π-acceptor type have been designed, synthesized, characterized and their photovoltaic properties explored. Polycyclic aromatic hydrocarbons (PAH), such as pyrene or fluorene, act as a donor, the porphyrin is the π-spacer, appended with an ethynyl thiophene linker, and either cyanoacrylic acid or malonic acid acts as the acceptor. All of the compounds were characterized by 1H NMR and mass spectrometry. UV-Vis absorption spectra and B or Soret (λex at 440 nm for the four sensitizers reported) band-excited fluorescence emission spectra were also obtained. The electrochemical properties suggest that the first oxidation is ring-centred, which is supported by in situ spectro-electrochemical and DFT computational studies. The synthesized porphyrins were applied in dye-sensitized solar cells (DSSCs). A conversion efficiency of up to 3.14%was realized for PYR-Por-MA under our experimental conditions.

U2 - 10.1039/c3ra47948j

DO - 10.1039/c3ra47948j

M3 - Article

AN - SCOPUS:84896967189

SN - 2046-2069

VL - 4

SP - 14165

EP - 14175

JO - RSC Advances

JF - RSC Advances

IS - 27

ER -

Ethynyl thiophene-appended unsymmetrical zinc porphyrin sensitizers for dye-sensitized solar cells

Abstract

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