Large‐Grained Perovskite Films Enabled by One‐Step Meniscus‐Assisted Solution Printing of Cross‐Aligned Conductive Nanowires for Biodegradable Flexible Solar Cells
Large‐Grained Perovskite Films Enabled by One‐Step Meniscus‐Assisted Solution Printing of Cross‐Aligned Conductive Nanowires for Biodegradable Flexible Solar Cells
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DOI：
10.1002/aenm.202001185
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发表时间：
2020-08
影响因子：
27.8
通讯作者：
Jiabin Qi;Shuo Chen;C. Lan;A. Wang;Xun Cui;Zhengwei You;Qinghong Zhang;Yaogang Li;Zhong Lin Wang;Hongzhi Wang;Zhiqun Lin
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文献类型：
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作者：
Jiabin Qi;Shuo Chen;C. Lan;A. Wang;Xun Cui;Zhengwei You;Qinghong Zhang;Yaogang Li;Zhong Lin Wang;Hongzhi Wang;Zhiqun Lin
消费电子产品使用寿命短，对性能的要求不断提高，引发了电子废物的快速增长，导致全球面临严重的生态挑战。在此，报告了一种明智地构建可方便生物降解的柔性钙钛矿太阳能电池（PSC）的稳健策略。这一策略的关键是利用弯月面辅助溶液印刷（MASP）作为一种简便的方法，一步生成交叉排列的银纳米线，然后将其浸渍在可生物降解的弹性体聚酯中。有趣的是，所制作的混合可生物降解电极极大地限制了钙钛矿前驱体溶液的溶剂蒸发，从而产生更少的核，进而沉积出大晶粒致密钙钛矿薄膜，该薄膜表现出优异的光电性能，在PSC中的功率转换效率为17.51%。更重要的是，基于混合生物可降解电极的设备还表现出令人印象深刻的抗机械变形鲁棒性，并且在使用后可以彻底生物降解。这些结果表明 MASP 在可控组装定向导电纳米材料用于可生物降解电极方面具有巨大潜力。因此，它代表了对环保、多功能和柔性电子、光电、光子和传感材料和器件的重要努力。
Increasing performance demand associated with the short lifetime of consumer electronics has triggered fast growth in electronic waste, leading to serious ecological challenges worldwide. Herein, a robust strategy for judiciously constructing flexible perovskite solar cells (PSCs) that can be conveniently biodegraded is reported. The key to this strategy is to capitalize on meniscus‐assisted solution printing (MASP) as a facile means of yielding cross‐aligned silver nanowires in one‐step, which are subsequently impregnated in a biodegradable elastomeric polyester. Intriguingly, the as‐crafted hybrid biodegradable electrode greatly constrains the solvent evaporation of the perovskite precursor solution, thereby generating fewer nuclei and in turn resulting in the deposition of a large‐grained dense perovskite film that exhibits excellent optoelectronic properties with a power conversion efficiency of 17.51% in PSCs. More importantly, the hybrid biodegradable electrode‐based devices also manifest impressive robustness against mechanical deformation and can be thoroughly biodegraded after use. These results signify the great potential of MASP for controllably assembling aligned conductive nanomaterials for biodegradable electrodes. As such, it represents an important endeavor toward environmentally friendly, multifunctional and flexible electronic, optoelectronic, photonic, and sensory materials and devices.