Graduate School of Carbon Neutrality, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan44919, Republic of Korea.
Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute, Miryang50463, Republic of Korea.
ACS Appl Mater Interfaces. 2023 Feb 1;15(4):5378-5386. doi: 10.1021/acsami.2c22047. Epub 2023 Jan 21.
Enhanced device performance of flexible organic solar cells (FOSCs) was achieved according to the development of organic solar cells (OSCs). OSCs are promising candidates as energy sources for low-power supply systems such as the Internet of Things (IoT) under indoor lighting environments. To apply FOSCs to flexible or wearable applications, they must be mechanically stable. In this study, we fabricated FOSCs with silver nanomesh (AgNM) as the bottom transparent conductive electrode (TCE). Instead of indium tin oxide (ITO), AgNMs were prepared using three pitches of 25, 50, and 100 μm with a square pattern, using a poly(ethylene terephthalate) (PET) substrate. Notably, the device using AgNMs with a pitch of 25 μm exhibited a power conversion efficiency (PCE) of 14.93% under 1 sun illumination and 17.91% under 1000 lux of light-emitting diode (LED) light conditions. Flexible devices using AgNMs maintained over 92% of their initial PCE under 1 sun illumination (PCE decreased to 12.98 from 14.04%) and over 92% when tested under 1000 lux of LED light illumination (PCE decreased to 16.57 from 17.91%) after 1000 instances of bending. These results demonstrate the advantages of using AgNMs as an alternative TCE under both 1 sun and indoor lightning environments and are promising candidates for flexible applications.
根据有机太阳能电池（OSC）的发展，提高了柔性有机太阳能电池（FOSC）的器件性能。OSC 作为物联网（IoT）等低功耗供电系统的能源具有很大的应用潜力，在室内光照环境下使用。为了将 FOSC 应用于柔性或可穿戴应用，它们必须具有机械稳定性。在这项研究中，我们使用银纳米网（AgNM）作为底部透明导电电极（TCE）来制备 FOSC。AgNMs 是使用 25、50 和 100μm 三种线距的正方形图案的聚对苯二甲酸乙二醇酯（PET）基底制备的，而不是使用铟锡氧化物（ITO）。值得注意的是，在 1 个太阳光照射和 1000 lux 发光二极管（LED）光条件下，AgNM 线距为 25μm 的器件的功率转换效率（PCE）分别为 14.93%和 17.91%。在 1 个太阳光照射下，使用 AgNMs 的柔性器件的初始 PCE 保持在 92%以上（从 14.04%下降到 12.98%），在 1000 lux LED 光照射下测试时保持在 92%以上（从 17.91%下降到 16.57%），经过 1000 次弯曲后。这些结果表明，在 1 个太阳和室内闪电环境下，AgNMs 作为替代 TCE 具有优势，是柔性应用的有前途的候选材料。
