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首页> 外文期刊>ACS applied materials & interfaces >Solution-Processed Organic Solar Cells from Dye Molecules: An Investigation of Diketopyrrolopyrrole:Vinazene Heterojunctions
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Solution-Processed Organic Solar Cells from Dye Molecules: An Investigation of Diketopyrrolopyrrole:Vinazene Heterojunctions

机译：染料分子溶液处理的有机太阳能电池：二酮吡咯并吡咯：杂芳烃异质结的研究

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摘要

Although one of the most attractive aspects of organic solar cells is their low cost and ease of fabrication, the active materials incorporated into the vast majority of reported bulk heterojunction (BHJ) solar cells include a semiconducting polymer and a fullerene derivative, classes of materials which are both typically difficult and expensive to prepare. In this study, we demonstrate that effective BHjs can be fabricated from two easily synthesized dye molecules. Solar cells incorporating a diketopyrrolopyrrole (DPP)-based molecule as a donor and a dicyanoimidazole (Vinazene) acceptor function as an active layer in BHJ solar cells, producing relatively high open circuit voltages and power conversion efficiencies (PCEs) up to 1.1%. Atomic force microscope images of the films show that active layers are rough and apparently have large donor and acceptor domains on the surface, whereas photoluminescence of the blends is incompletely quenched, suggesting that higher PCEs might be obtained if the morphology could be improved to yield smaller domain sizes and a larger interfacial area between donor and acceptor phases.
机译：尽管有机太阳能电池最吸引人的方面之一是其低成本和易于制造，但已纳入绝大多数已报道的体异质结（BHJ）太阳能电池的活性材料包括半导体聚合物和富勒烯衍生物。准备通常既困难又昂贵。在这项研究中，我们证明了可以由两个易于合成的染料分子制造有效的BHjs。结合了基于二酮基吡咯并吡咯（DPP）的分子作为供体和双氰基咪唑（Vinazene）受体的太阳能电池在BHJ太阳能电池中用作活性层，产生相对较高的开路电压，功率转换效率（PCE）高达1.1％。薄膜的原子力显微镜图像显示，活性层很粗糙，表面上显然具有较大的供体和受体结构域，而共混物的光致发光未完全淬灭，这表明如果可以改善形态以产生较小的分子，则可以获得更高的PCE。区域大小以及供体和受体相之间的较大界面面积。

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