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Title: | Ternary polymer solar cells with iridium-based polymer PM6Ir1 as a donor and N3:ITIC-Th as an acceptor exhibiting over 17.2% efficiency | Authors: | Zhang, S Zhang, M Wang, X Xu, C Xu, W Gao, J Wang, J Wong, WY Son, JH Jeong, SY Woo, HY Zhang, F |
Issue Date: | 21-Nov-2021 | Source: | Sustainable energy & fuels, 21 Nov. 2021, v. 5, no. 22, p. 5825-5832 | Abstract: | Iridium-based polymer PM6Ir1 as an electron donor and two nonfullerene materials N3and ITIC-Th as electron acceptors were selected to prepare efficient polymer solar cells (PSCs). ITIC-Th was used as the third component to enhance photon harvesting and as a morphology regulator to optimize molecular arrangement and phase separation in the ternary active layer. Improvements in open circuit voltage (0.86 Vvs.0.84 V), short circuit current density (26.53 mA cm−2vs.26.13 mA cm−2) and fill factor (75.47%vs.74.11%) are simultaneously obtained for the PSCs with 10 wt% ITIC-Th in the acceptor mixture, leading to a power conversion efficiency (PCE) enhancement from 16.27% to 17.22%. The charge mobility and charge transport balance in the ternary active layer can be enhanced by incorporating ITIC-Th, resulting from the optimized phase separation and molecular arrangement with ITIC-Th as a morphology regulator. The positive effect of ITIC-Th incorporation on PCE improvement can be demonstrated by the relatively high external quantum efficiency values of the optimal ternary PSCs in the spectral range from 300 to 820 nm. | Publisher: | Royal Society of Chemistry | Journal: | Sustainable energy & fuels | EISSN: | 2398-4902 | DOI: | 10.1039/d1se01258d | Rights: | This journal is © The Royal Society of Chemistry 2021 The following publication Zhang, S., Zhang, M., Wang, X., Xu, C., Xu, W., Gao, J., ... & Zhang, F. (2021). Ternary polymer solar cells with iridium-based polymer PM6Ir1 as a donor and N 3: ITIC-Th as an acceptor exhibiting over 17.2% efficiency. Sustainable Energy & Fuels, 5(22), 5825-5832 is available at https://doi.org/10.1039/d1se01258d. |
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Zhang_Ternary_Polymer_Solar.pdf | Pre-Published version | 1.06 MB | Adobe PDF | View/Open |
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