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Ultraviolet Durable Flexible Nonfullerene Organic Solar Cells Realized by a Hybrid Nanostructured Transparent Electrode

Abstract : A significant enhancement in ultraviolet (UV) durable indium tin oxide (ITO)‐free flexible nonfullerene organic solar cells (OSCs) has been demonstrated using a hybrid nanostructured flexible transparent electrode (FTE), comprising a mixture of 0D silver nanoparticles (AgNPs), 1D Ag nanowires (AgNWs) and 2D exfoliated graphene sheets. The FTE possesses high optical transparency and electric conductivity, good air stability and full‐solution fabrication capability at a low processing temperature. An average power convention efficiency (PCE) of 8.15% has been obtained for the flexible nonfullerene OSCs, based on the blend of poly[(2,6‐(4, 8‐bis(5‐(2‐ethylhexyl)thiophen‐2‐yl)‐benzo[1,2‐b:4,5‐b’]dithiophene))‐alt‐(5,5‐(1’,3’‐di‐2‐thienyl‐5’,7’‐bis(2‐ethylhexyl)benzo[1’,2’‐c:4’,5’‐c’] dithiophene‐4,8‐dione)] (PBDB‐T): 3,9‐ bis(2‐methylene‐(3‐(1,1‐dicyanomethylene)‐indanone))‐5,5,11,11‐tetrakis(4‐hexylphenyl)‐dithieno[2,3‐d:2’,3’‐d’]‐s‐indaceno[1,2‐b:5,6‐b’] dithiophene (ITIC). The flexible PBDB‐T:ITIC OSCs exhibit an excellent UV durability compared to the ITO‐based control cell, realized by incorporating a FTE with a tailored absorption in wavelength < 380 nm. The novel FTE developed in this work provides a promising alternative to ITO for use in UV durable flexible OSCs, serving as a built‐in UV filter to impede an inevitable UV‐induced degradation in ITO‐based OSCs.
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https://hal-utt.archives-ouvertes.fr/hal-02439215
Contributor : Jean-Baptiste Vu Van <>
Submitted on : Tuesday, January 14, 2020 - 3:06:01 PM
Last modification on : Monday, March 2, 2020 - 1:38:09 PM

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Tao Xu, Chunliu Gong, Shuanglong Wang, Hong Lian, Weixia Lan, et al.. Ultraviolet Durable Flexible Nonfullerene Organic Solar Cells Realized by a Hybrid Nanostructured Transparent Electrode. Solar RRL, Wiley, 2020, ⟨10.1002/solr.201900522⟩. ⟨hal-02439215⟩

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