Chen Zhihao, Yin Hang, Wen Zhenchuan, So Shu Kong, Hao Xiaotao
School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
Sci Bull (Beijing). 2021 Aug 30;66(16):1641-1648. doi: 10.1016/j.scib.2021.04.010. Epub 2021 Apr 13.
Organic photovoltaic (OPV) cells have found their potential applications in the harvest of indoor light photons. However, the output power of such indoor devices is usually far from the demand of the internet of things. Therefore, it is essential to boost the output power of indoor organic photovoltaics to a much higher level. As wildly deployed among industrial and civil luminous environments, thermal radiation-based indoor light sources are alternative candidates to supply the essential power of the off-grid electronics with a broad consecutive emission spectrum. In this work, we evaluated the photovoltaic performance of organic solar cells under indoor incandescent and halogen illuminations. Impressively, under such thermal radiations, an improvement over 500% of the output power density can be achieved in comparison with that under light-emitting diodes and fluorescent lamps, reaching a record high value of 279.1 μW cm by the PM6:Y6-based device. The remarkable power output is originated from the extra near-infrared spectrum of indoor thermal lights, which restricts the effective area under 10 cm in achieving 1 mW output power. This work clarifies the feasibility of collecting photons radiated from indoor thermal light sources through OPV cells, and enlightens the further applications of indoor OPV cells under multiple illumination environments.
有机光伏（OPV）电池已在室内光子捕获方面展现出潜在应用。然而，此类室内设备的输出功率通常远不能满足物联网的需求。因此，将室内有机光伏的输出功率提升至更高水平至关重要。作为广泛应用于工业和民用发光环境的室内光源，基于热辐射的光源是为离网电子设备提供基本电力的替代选择，其具有连续的宽发射光谱。在这项工作中，我们评估了有机太阳能电池在室内白炽灯和卤素灯照明下的光伏性能。令人印象深刻的是，在这种热辐射下，与发光二极管和荧光灯照明相比，输出功率密度可提高500%以上，基于PM6:Y6的器件达到了创纪录的279.1 μW/cm²的高值。显著的功率输出源自室内热光额外的近红外光谱，这使得在实现1 mW输出功率时有效面积限制在10 cm²以下。这项工作阐明了通过OPV电池收集室内热光源辐射光子的可行性，并为室内OPV电池在多种照明环境下的进一步应用提供了启示。
