A significant enhancement in ultraviolet (UV)‐durable indium tin oxide (ITO)‐free flexible nonfullerene organic solar cells (OSCs) is demonstrated using a hybrid nanostructured flexible transparent electrode (FTE), comprising a mixture of 0D silver nanoparticles, 1D Ag nanowires, and 2D exfoliated graphene sheets. The FTE exhibits high optical transparency and electric conductivity, good air stability, and full solution fabrication capability at a low processing temperature. An average power convention efficiency of 8.15% is 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 with the ITO‐based control cell, realized by incorporating an FTE with a tailored absorption at wavelengths <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.

中文翻译：

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通过混合纳米结构透明电极实现的耐紫外线柔性非富勒烯有机太阳能电池

使用混合纳米结构柔性透明电极（FTE）证明了无紫外线（UV）耐用的无铟锡氧化物（ITO）的柔性非富勒烯有机太阳能电池（OSC）的显着增强，该电极包括0D银纳米颗粒，1D Ag纳米线的混合物，以及2D脱落的石墨烯片。FTE在较低的处理温度下显示出高的光学透明性和导电性，良好的空气稳定性以及完整的溶液制造能力。基于聚[（2,6-（4,8-双（5-（2-乙基己基）噻吩-2-基）基苯并]的混合物，柔性非富勒烯OSC的平均功率转换效率为8.15％ [1,2- b：4,5- b ']二噻吩））-alt-（5,5-（1'，3'-di-2--2-噻吩基-5'，7'-双（2-乙基己基）苯并[1'，2'- c：4'，5'- c′] dithiophene‐4,8‐dione）]（PBDB‐T）：3,9‐bis（2 -‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 3 ‐‐‐‐‐‐‐‐‐‐‐‐ phen ‐‐‐‐ one–‐andanone）〕-5,5,11,11‐‐四（4-己基苯基）-二硫代[2,3- d：2'，3'- d ']- s-茚满[1,2- b：5,6- b ']二噻吩（ITIC）。柔性PBDB-T：ITIC OSC与基于ITO的控制单元相比，具有出色的紫外线耐久性，这是通过结合FTE并在波长小于380 nm的波长上实现定制吸收而实现的。在这项工作中开发的新型FTE提供了一种有前途的替代品，可用于ITO耐用的柔性OSC中，用作内置的UV过滤器，以防止ITO导致的OSC中不可避免的UV降解。