Ternary polymer solar cells (PSCs) have been widely demonstrated as an effective method to improve device performance. Meanwhile, the simple fabrication technology can be well kept with a single bulk heterojunction active layer, which is beneficial to the potential industrialization of PSCs. The photovoltaic parameters, such as short-circuit current density, open-circuit voltage, and fill factor, of ternary PSCs can be simultaneously improved by appropriately incorporating the third component, resulting in the increased power conversion efficiency (PCE) compared with the corresponding binary PSCs. To date, the PCE of ternary PSCs has exceeded 17% with the development of effective donors and non-fullerene acceptors. The fundamental designing rules of ternary PSCs are summarized to give some available guidelines for material selection. Next, the recent progress of efficient ternary PSCs based on various types is investigated. Then, some methods are introduced to investigate the working mechanisms of ternary PSCs. At length, the perspective toward the future development of ternary PSCs is discussed.

中文翻译：

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实现高效三元聚合物太阳能电池的智能策略综述

三元聚合物太阳能电池 (PSC) 已被广泛证明是提高器件性能的有效方法。同时，单一的体异质结活性层可以很好地保持简单的制造技术，有利于PSC的潜在产业化。通过适当掺入第三组分，三元PSCs的短路电流密度、开路电压和填充因子等光伏参数可以同时得到改善，从而与相应的二元PSC相比提高了功率转换效率（PCE）。 PSC。迄今为止，随着有效供体和非富勒烯受体的发展，三元 PSC 的 PCE 已超过 17%。总结了三元 PSC 的基本设计规则，以提供一些可用的材料选择指南。下一个，研究了基于各种类型的高效三元 PSC 的最新进展。然后，介绍了一些方法来研究三元 PSC 的工作机制。最后，讨论了三元 PSC 未来发展的前景。