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Analyzing the efficiency, stability and cost potential for fullerene-free organic photovoltaics in one figure of merit†
Energy & Environmental Science ( IF 32.5 ) Pub Date : 2018-03-16 00:00:00 , DOI: 10.1039/c8ee00151k
Ning Li 1, 2, 3, 4 , Iain McCulloch 5, 6, 7, 8, 9 , Christoph J. Brabec 1, 2, 3, 4, 10
Affiliation  

The power conversion efficiencies (PCEs) of solution-processed organic photovoltaic (OPV) devices continue increasing towards the 15% milestone. Recently-emerging non-fullerene acceptors (NFAs) have significantly accelerated this development. Most of the efficiency analyses performed previously are based on a fullerene acceptor without considering its contribution to the enhancement of photo-absorption and PCE. Moreover, the stability and cost potential of OPV devices are usually not discussed, which sometimes makes the efficiency prediction less representative for broad interest. In this work, we effectively combine the prediction of efficiencies with experimentally determined stability data to analyze and predict the commercial potential of a NFA-based OPV product. Assuming that NFAs dominate the blend near IR absorption, the efficiency limit of OPV devices is predicted to be close to 20% and is found to be insensitive to the donor bandgap. With the excellent photo-stability observed for state-of-the-art NFA-based OPV devices, it is suggested that the corresponding customized donors with promising processing properties, excellent environmental stability and low synthesis complexity be designed as realistic material pairs for large-scale production and commercialization.

中文翻译:

通过一个品质因数分析无富勒烯有机光伏的效率,稳定性和成本潜力

溶液处理的有机光伏(OPV)器件的功率转换效率(PCE)继续朝着15%的里程碑增长。最近出现的非富勒烯受体(NFA)大大加速了这一发展。先前进行的大多数效率分析均基于富勒烯受体,而未考虑其对增强光吸收和PCE的贡献。此外,通常不会讨论OPV器件的稳定性和成本潜力,这有时会使效率预测无法代表广泛的兴趣。在这项工作中,我们将效率的预测与实验确定的稳定性数据有效地结合在一起,以分析和预测基于NFA的OPV产品的商业潜力。假设NFA在红外吸收附近占混合气体的主导地位,预测OPV器件的效率极限接近20%,并且发现它对施主带隙不敏感。鉴于对基于NFA的最先进的OPV器件观察到的优异的光稳定性,建议将具有前途的加工性能,优异的环境稳定性和较低的合成复杂性的相应定制供体设计为适合大批量生产的实际材料对。规模化生产和商业化。
更新日期:2018-03-16
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