Longitudinal Through-Hole Architecture for Efficient and Thickness-Insensitive Semitransparent Organic Solar Cells,Advanced Materials

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Longitudinal Through-Hole Architecture for Efficient and Thickness-Insensitive Semitransparent Organic Solar Cells
Advanced Materials ( IF 27.4 ) Pub Date : 2023-05-13 , DOI: 10.1002/adma.202302927
Xiaopeng Duan ₁ , Chunhui Liu ₁ , Yunhao Cai ₁ , Linglong Ye ₁ , Jingwei Xue ₂ , Yinuo Yang ₁ , Wei Ma ₂ , Yanming Sun ₁

Affiliation

Semi-transparent organic solar cells (ST-OSCs) have great potential for application in vehicle- or building-integrated solar energy harvesting. Ultrathin active layers and electrodes are typically utilized to guarantee high power conversion efficiency (PCE) and high average visible transmittance (AVT) simultaneously; however, such ultrathin parts are unsuitable for industrial high-throughput manufacturing. In this study, ST-OSCs are fabricated using a longitudinal through-hole architecture to achieve functional region division and to eliminate the dependence on ultrathin films. A complete circuit that vertically corresponds to the silver grid is responsible for obtaining high PCE, and the longitudinal through-holes embedded in it allow most of the light to pass through,where the overall transparency is associated with the through-hole specification rather than the thicknesses of active layer and electrode. Excellent photovoltaic performance over a wide range of transparency (9.80–60.03%), with PCEs ranging from 6.04% to 15.34% is achieved. More critically, this architecture allows printable 300-nm-thick devices to achieve a record-breaking light utilization efficiency (LUE) of 3.25%, and enables flexible ST-OSCs to exhibit better flexural endurance by dispersing the extrusion stress into the through-holes. This study paves the way for fabricating high-performance ST-OSCs and shows great promise for the commercialization of organic photovoltaics.

中文翻译：

用于高效且对厚度不敏感的半透明有机太阳能电池的纵向通孔结构

半透明有机太阳能电池（ST-OSC）在车辆或建筑一体化太阳能收集方面具有巨大的应用潜力。通常采用超薄有源层和电极来同时保证高功率转换效率（PCE）和高平均可见光透过率（AVT）；然而，这种超薄零件不适合工业高通量制造。在这项研究中，ST-OSC采用纵向通孔架构制造，以实现功能区域划分并消除对超薄膜的依赖。垂直对应银栅的完整电路负责获得高PCE，其中嵌入的纵向通孔允许大部分光线通过，其中整体透明度与通孔规格相关，而不是与有源层和电极的厚度。在较宽的透明度范围（9.80-60.03%）内实现了优异的光伏性能，PCE 范围为 6.04% 至 15.34%。更关键的是，这种架构使可印刷的300纳米厚的器件能够实现破纪录的3.25%的光利用率（LUE），并通过将挤压应力分散到通孔中，使柔性ST-OSC表现出更好的抗弯能力。这项研究为制造高性能 ST-OSC 铺平了道路，并为有机光伏的商业化展现了巨大的前景。

更新日期：2023-05-13

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