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Issue 47, 2019
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Mesoporous silica hybrids as an antireflective coating to enhance light harvesting and achieve over 16% efficiency of organic solar cells

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Abstract

Grafted with hexamethyldisiloxane (HMDS), mesoporous silica nanoparticle (MSN) hybrids have been synthesized and explored as an antireflective coating (ARC) to enhance the power conversion efficiency (PCE) of non-fullerene organic solar cells (OSCs). The ARC consisting of HMDS–MSN hybrids and silica oligomer binders can increase the transmittance of the OSC glass substrate from a maximum value of around 90% to 95%, allowing more visible light to be absorbed by the photoactive layer of OSCs and be converted to free charges. After coating of an ARC, the short-circuit current density and PCE of PBDB-T:ITIC OSCs increased from 15.5 mA cm−2 and 9.7% to 16.1 mA cm−2 and 10.1%, with those of PBDB-T-2F:BTP-4F OSCs increasing from 25.2 mA cm−2 and 15.4% to 26.7 mA cm−2 and 16.2%, which is among the highest reported efficiency of single-junction OSCs in the literature. Meanwhile, the fill factor and open-circuit voltage of those OSCs remain unaffected. Our results suggest that an ARC is a superior approach to enhance the efficiency of organic solar cells.

Graphical abstract: Mesoporous silica hybrids as an antireflective coating to enhance light harvesting and achieve over 16% efficiency of organic solar cells

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Publication details

The article was received on 27 Sep 2019, accepted on 06 Nov 2019 and first published on 07 Nov 2019


Article type: Paper
DOI: 10.1039/C9TC05301H
J. Mater. Chem. C, 2019,7, 14962-14969

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    Mesoporous silica hybrids as an antireflective coating to enhance light harvesting and achieve over 16% efficiency of organic solar cells

    Y. Wang, M. Chen, D. Li, Z. Huang, Y. Mao, W. Han, T. Wang and D. Liu, J. Mater. Chem. C, 2019, 7, 14962
    DOI: 10.1039/C9TC05301H

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