Reducing energy and voltage loss is an imperative area of improvement for the design of organic solar cells (OSCs). Both in the context of charge generation and charge recombination, significant amounts of energy are lost even in state-of-the-art OSCs compared with their inorganic counterparts. Through a set of recent examples, however, we show that (1) charge generation can proceed with high quantum efficiency even in the absence of an offset energy at the donor-acceptor interface and (2) non-radiative charge recombination may be mitigated by considering systems with distinct properties of the interfacial charge-transfer state. To capitalize on these recent advances in understanding, we provide three actionable paths forward that aim to better identify, process, and characterize low energy loss systems: incorporating consistent and accurate measurements for energy levels, moving away from photoluminescence quenching, and exploring blends with reduced miscibility.

减少能量和电压损耗是有机太阳能电池（OSC）设计的必要改进领域。在电荷产生和电荷复合的背景下，即使是最先进的OSC，与无机类似物相比，也会损失大量能量。然而，通过一系列最新的例子，我们表明（1）即使在供体-受体界面处不存在偏移能量的情况下，电荷产生也可以高量子效率进行，并且（2）非辐射电荷复合可通过考虑具有界面电荷转移状态的不同特性的系统。为了利用这些最新的理解进展，我们提供了三种可行的途径，旨在更好地识别，处理和表征低能耗系统：