Highly efficient fullerene and non-fullerene based ternary organic solar cells incorporating a new tetrathiocin-cored semiconductor
Journal article
Jagadamma, LK, Taylor, RGD, Kanibolotsky, AL, Sajjad, T, Wright, IA, Horton, PN, Coles, SJ, Samuel, IDW and Skabara, Peter J (2019). Highly efficient fullerene and non-fullerene based ternary organic solar cells incorporating a new tetrathiocin-cored semiconductor. Sustainable Energy & Fuels. 3 (8), pp. 2087-2099. https://doi.org/10.1039/C9SE00343F
Authors | Jagadamma, LK, Taylor, RGD, Kanibolotsky, AL, Sajjad, T, Wright, IA, Horton, PN, Coles, SJ, Samuel, IDW and Skabara, Peter J |
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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. |
Year | 2019 |
Journal | Sustainable Energy & Fuels |
Journal citation | 3 (8), pp. 2087-2099 |
Publisher | Royal Society of Chemistry (RSC) |
ISSN | 2398-4902 |
Digital Object Identifier (DOI) | https://doi.org/10.1039/C9SE00343F |
Publication dates | |
18 Jun 2019 | |
Online | 18 Jun 2019 |
Publication process dates | |
Accepted | 03 Jun 2019 |
Deposited | 12 Feb 2020 |
Publisher's version | License File Access Level Open |
https://openresearch.lsbu.ac.uk/item/88z76
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