Fan Jing-Yuan, Liu Zhi-Xi, Rao Jack, Yan Kangrong, Chen Zeng, Ran Yixin, Yan Buyi, Yao Jizhong, Lu Guanghao, Zhu Haiming, Li Chang-Zhi, Chen Hongzheng
State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
Hangzhou Microquanta Semiconductor Co. LTD., Hangzhou, 310027, P. R. China.
Adv Mater. 2022 Jul;34(28):e2110569. doi: 10.1002/adma.202110569. Epub 2022 Jun 6.
Although encouraging progress is being made on spin-coated prototype cells, organic solar cells (OSCs) still face significant challenges, yet to be explored, for upscaling the multi-stacked photoactive layers in the construction of large-area modules. Herein, high-performance opaque and semitransparent organic solar modules are developed via a bilayer-merged-annealing (BMA)-assisted blade-coating strategy, achieving impressive efficiencies of 14.79% and 12.01% with respect to active area of 18.73 cm , which represent the best organic solar minimodules so far. It is revealed that the BMA strategy effectively resolves the de-wetting issues between polar charge transport layer solution and non-polar bulk heterojunction blends, hence improving the film coverage, along with electronic and electric contacts of multi-stacked photoactive layers. As result, organic solar modules coated under ambient conditions successfully retain the high-efficiency of small-area cells upon 312 times area scaling-up. Overall, this work provides a facile and effective method to fabricate high-performance organic solar modules under ambient conditions.
尽管在旋涂原型电池方面取得了令人鼓舞的进展，但有机太阳能电池（OSC）在扩大大面积模块结构中的多堆叠光活性层规模方面仍面临重大挑战，有待探索。在此，通过双层合并退火（BMA）辅助刮涂策略开发了高性能不透明和半透明有机太阳能模块，相对于18.73平方厘米的有源面积，实现了14.79%和12.01%的令人印象深刻的效率，这代表了迄今为止最好的有机太阳能微型模块。研究表明，BMA策略有效地解决了极性电荷传输层溶液与非极性本体异质结共混物之间的去湿问题，从而提高了膜覆盖率，以及多堆叠光活性层的电子和电接触。结果，在环境条件下涂覆的有机太阳能模块在面积扩大312倍后成功保持了小面积电池的高效率。总体而言，这项工作提供了一种在环境条件下制造高性能有机太阳能模块的简便有效方法。
