Highly efficient fullerene and non-fullerene based ternary organic solar cells incorporating a new tetrathiocin-cored semiconductor

Lethy Krishnan Jagadamma, Rupert G. D. Taylor, Alexander L. Kanibolotsky, Muhammad Tariq Sajjad, Iain A. Wright, Peter N. Horton, Simon J. Coles, Ifor D. W. Samuel, Peter J. Skabara

Research output: Contribution to journalArticle

Abstract

A new dual-chain oligothiophene-based organic semiconductor, EH-5T-TTC, is presented. The molecule contains two conjugated chains linked by a fused tetrathiocin core. X-ray crystallography reveals a boat conformation within the 8-membered sulfur heterocycle core and extensive π-π and intermolecular sulfur-sulfur interactions in the bulk, leading to a 2-dimensional structure. This unusual molecule has been studied as a ternary component in organic solar cell blends containing the electron donor PTB7-Th and both fullerene (PC71BM) and non-fullerene acceptors ITIC and EH-IDTBR. By incorporating EH-5T-TTC as a ternary component, the power conversion efficiency of the binary blends containing non-fullerene acceptor increases by 17% (from 7.8% to 9.2%) and by 85% for the binary blend with fullerene acceptor (from 3.3% to 6.3%). Detailed characterisation of the ternary blend systems implies that the ternary small molecule EH-5T-TTC functions differently in polymer:fullerene and polymer:non-fullerene blends and has dual functions of morphology modification and complementary spectral absorption.

LanguageEnglish
Pages2087-2099
Number of pages13
JournalSustainable Energy and Fuels
Volume3
Issue number8
Early online date18 Jun 2019
DOIs
Publication statusPublished - 1 Aug 2019

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Fullerenes
Sulfur
Semiconductor materials
Molecules
Polymers
Semiconducting organic compounds
X ray crystallography
Boats
Polymer blends
Conversion efficiency
Conformations
Electrons
Organic solar cells

Keywords

  • organic semiconductor
  • organic solar cell
  • organic photovoltaic devices

Cite this

Krishnan Jagadamma, L., Taylor, R. G. D., Kanibolotsky, A. L., Sajjad, M. T., Wright, I. A., Horton, P. N., ... Skabara, P. J. (2019). Highly efficient fullerene and non-fullerene based ternary organic solar cells incorporating a new tetrathiocin-cored semiconductor. 3(8), 2087-2099. https://doi.org/10.1039/c9se00343f
Krishnan Jagadamma, Lethy ; Taylor, Rupert G. D. ; Kanibolotsky, Alexander L. ; Sajjad, Muhammad Tariq ; Wright, Iain A. ; Horton, Peter N. ; Coles, Simon J. ; Samuel, Ifor D. W. ; Skabara, Peter J. / Highly efficient fullerene and non-fullerene based ternary organic solar cells incorporating a new tetrathiocin-cored semiconductor. 2019 ; Vol. 3, No. 8. pp. 2087-2099.
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Krishnan Jagadamma, L, Taylor, RGD, Kanibolotsky, AL, Sajjad, MT, Wright, IA, Horton, PN, Coles, SJ, Samuel, IDW & Skabara, PJ 2019, 'Highly efficient fullerene and non-fullerene based ternary organic solar cells incorporating a new tetrathiocin-cored semiconductor' vol. 3, no. 8, pp. 2087-2099. https://doi.org/10.1039/c9se00343f

Highly efficient fullerene and non-fullerene based ternary organic solar cells incorporating a new tetrathiocin-cored semiconductor. / Krishnan Jagadamma, Lethy; Taylor, Rupert G. D.; Kanibolotsky, Alexander L.; Sajjad, Muhammad Tariq; Wright, Iain A.; Horton, Peter N.; Coles, Simon J.; Samuel, Ifor D. W.; Skabara, Peter J.

Vol. 3, No. 8, 01.08.2019, p. 2087-2099.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Highly efficient fullerene and non-fullerene based ternary organic solar cells incorporating a new tetrathiocin-cored semiconductor

AU - Krishnan Jagadamma, Lethy

AU - Taylor, Rupert G. D.

AU - Kanibolotsky, Alexander L.

AU - Sajjad, Muhammad Tariq

AU - Wright, Iain A.

AU - Horton, Peter N.

AU - Coles, Simon J.

AU - Samuel, Ifor D. W.

AU - Skabara, Peter J.

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Y1 - 2019/8/1

N2 - A new dual-chain oligothiophene-based organic semiconductor, EH-5T-TTC, is presented. The molecule contains two conjugated chains linked by a fused tetrathiocin core. X-ray crystallography reveals a boat conformation within the 8-membered sulfur heterocycle core and extensive π-π and intermolecular sulfur-sulfur interactions in the bulk, leading to a 2-dimensional structure. This unusual molecule has been studied as a ternary component in organic solar cell blends containing the electron donor PTB7-Th and both fullerene (PC71BM) and non-fullerene acceptors ITIC and EH-IDTBR. By incorporating EH-5T-TTC as a ternary component, the power conversion efficiency of the binary blends containing non-fullerene acceptor increases by 17% (from 7.8% to 9.2%) and by 85% for the binary blend with fullerene acceptor (from 3.3% to 6.3%). Detailed characterisation of the ternary blend systems implies that the ternary small molecule EH-5T-TTC functions differently in polymer:fullerene and polymer:non-fullerene blends and has dual functions of morphology modification and complementary spectral absorption.

AB - A new dual-chain oligothiophene-based organic semiconductor, EH-5T-TTC, is presented. The molecule contains two conjugated chains linked by a fused tetrathiocin core. X-ray crystallography reveals a boat conformation within the 8-membered sulfur heterocycle core and extensive π-π and intermolecular sulfur-sulfur interactions in the bulk, leading to a 2-dimensional structure. This unusual molecule has been studied as a ternary component in organic solar cell blends containing the electron donor PTB7-Th and both fullerene (PC71BM) and non-fullerene acceptors ITIC and EH-IDTBR. By incorporating EH-5T-TTC as a ternary component, the power conversion efficiency of the binary blends containing non-fullerene acceptor increases by 17% (from 7.8% to 9.2%) and by 85% for the binary blend with fullerene acceptor (from 3.3% to 6.3%). Detailed characterisation of the ternary blend systems implies that the ternary small molecule EH-5T-TTC functions differently in polymer:fullerene and polymer:non-fullerene blends and has dual functions of morphology modification and complementary spectral absorption.

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KW - organic solar cell

KW - organic photovoltaic devices

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U2 - 10.1039/c9se00343f

DO - 10.1039/c9se00343f

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Krishnan Jagadamma L, Taylor RGD, Kanibolotsky AL, Sajjad MT, Wright IA, Horton PN et al. Highly efficient fullerene and non-fullerene based ternary organic solar cells incorporating a new tetrathiocin-cored semiconductor. 2019 Aug 1;3(8):2087-2099. https://doi.org/10.1039/c9se00343f