Asymmetric Additive-Assisted Organic Solar Cells with Much Better Energy Harvesting and Wireless Communication Performance,Advanced Energy Materials

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Asymmetric Additive-Assisted Organic Solar Cells with Much Better Energy Harvesting and Wireless Communication Performance
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2023-09-13 , DOI: 10.1002/aenm.202301755
Wen Lei ₁ , Yufei Wang ₁ , Zezhou Liang ₂ , Junyi Feng ₃ , Wei Zhang ₃ , Junbin Fang ₁ , Zhe Chen ₁ , Lintao Hou ₁

Affiliation

Organic solar cells (OSCs), exhibiting better sensitivity to different light intensities and higher power conversion efficiencies (PCEs) under indoor illumination, have great potential to be simultaneously used for solar energy harvesting and optical communication. However, the poor intrinsic molecular stacking and phase separation in active layers significantly hinder the charge transport and extraction in OSCs for achieving this aim. Here, an effective heterohalogen-substitution asymmetric additive strategy is proposed to fine-tune the non-covalent interaction with nonfullerene molecules and optimize the morphology of active layer, which greatly boosts both the OSC photovoltaic performance with the PCEs of up to 18.30% and 29.52% under AM 1.5G and indoor light illumination respectively, and the ‒3 dB communication bandwidths of 4.11, 3.14, and 3.04 MHz at red, green, and blue (RGB) wavelengths respectively. Of particular note, combining the wavelength division multiplexing and adaptive bit-loading technologies, the visible light communication system comprised of the RGB light sources and additive-treated OSCs delivers more remarkable data throughput of 302.7 Mb s⁻¹ and higher harvesting power of 7.38 mW simultaneously, presenting an excellent self-powered capability for enhanced endurance. This work demonstrates that high-performance OSCs with excellent energy harvesting and wireless communication capacity can be perfectly achieved by a heterohalogen-substitution asymmetric additive strategy.

中文翻译：

具有更好能量收集和无线通信性能的不对称添加剂辅助有机太阳能电池

有机太阳能电池（OSC）在室内照明下对不同的光强度表现出更好的敏感性和更高的功率转换效率（PCE），在同时用于太阳能收集和光通信方面具有巨大的潜力。然而，活性层中较差的固有分子堆积和相分离严重阻碍了 OSC 中实现这一目标的电荷传输和提取。在此，提出了一种有效的异卤素取代不对称添加剂策略，以微调与非富勒烯分子的非共价相互作用并优化活性层的形貌，从而极大地提高了OSC光伏性能，PCE高达18.30％和29.52分别在 AM 1.5G 和室内光照明下，以及红色、绿色和蓝色 (RGB) 波长下分别为 4.11、3.14 和 3.04 MHz 的 3 dB 通信带宽。特别值得注意的是，结合波分复用和自适应比特加载技术，由RGB光源和添加剂处理的OSC组成的可见光通信系统可提供更出色的302.7 Mb s -1 数据吞吐量和7.38 mW的更高^收集功率同时，具有出色的自供电能力，增强了续航能力。这项工作表明，通过异卤素取代不对称添加剂策略可以完美实现具有出色能量收集和无线通信能力的高性能OSC。

更新日期：2023-09-13

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