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Insoluble Organics as Electron-Transporting Materials Enabled by Solvothermal Technology for Solution-Processable Perovskite Solar Cells
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-01-17 , DOI: 10.1021/acs.jpcc.2c07281
Jian Kong 1 , Xiaoqing Cao 1 , Lingwei Kong 1 , Wenying Shi 1 , Chao Lu 1
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-01-17 , DOI: 10.1021/acs.jpcc.2c07281
Jian Kong 1 , Xiaoqing Cao 1 , Lingwei Kong 1 , Wenying Shi 1 , Chao Lu 1
Affiliation
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Introducing electron transport materials (ETMs) into perovskite solar cells (PSCs) has opened up a new avenue to improve device efficiency. However, the most commonly used method of introducing ETMs still relies on a high-vacuum process due to their poor solubility, which prevents the application of ETMs in full solution-processable PSCs. Here, solvothermal technology is employed to treat the insoluble perylene diimide (PDI) molecule, giving the typical n-type organic semiconductor its soluble properties. The as-obtained products (PDI-CDs) as ETMs not only are suitable for the preparation of solution-processable PSCs but also have matched energy levels with adjacent components in the device. The appearance of oxygen-containing functional groups enables PDI-CDs to chelate uncoordinated Pb, suppressing interfacial recombination and improving efficiency by passivating the surface defects of perovskite crystals. The all-air processed carbon-based PSCs modified with PDI-CDs achieved a respectable power conversion efficiency of 11.90%.
中文翻译:
溶剂热技术支持不溶性有机物作为电子传输材料,用于可溶液加工的钙钛矿太阳能电池
将电子传输材料 (ETM) 引入钙钛矿太阳能电池 (PSC) 开辟了一条提高器件效率的新途径。然而,由于 ETM 的溶解性差,最常用的引入 ETM 的方法仍然依赖于高真空工艺,这阻碍了 ETM 在完全可溶液加工的 PSC 中的应用。在这里,溶剂热技术用于处理不溶性苝二酰亚胺 (PDI) 分子,赋予典型的 n 型有机半导体可溶性。作为 ETM 的所得产品 (PDI-CD) 不仅适用于制备可溶液加工的 PSC,而且还具有与设备中相邻组件相匹配的能级。含氧官能团的出现使 PDI-CD 能够螯合未配位的 Pb,通过钝化钙钛矿晶体的表面缺陷来抑制界面复合并提高效率。用 PDI-CD 改性的全空气处理碳基 PSC 实现了 11.90% 的可观功率转换效率。
更新日期:2023-01-17
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
溶剂热技术支持不溶性有机物作为电子传输材料,用于可溶液加工的钙钛矿太阳能电池
将电子传输材料 (ETM) 引入钙钛矿太阳能电池 (PSC) 开辟了一条提高器件效率的新途径。然而,由于 ETM 的溶解性差,最常用的引入 ETM 的方法仍然依赖于高真空工艺,这阻碍了 ETM 在完全可溶液加工的 PSC 中的应用。在这里,溶剂热技术用于处理不溶性苝二酰亚胺 (PDI) 分子,赋予典型的 n 型有机半导体可溶性。作为 ETM 的所得产品 (PDI-CD) 不仅适用于制备可溶液加工的 PSC,而且还具有与设备中相邻组件相匹配的能级。含氧官能团的出现使 PDI-CD 能够螯合未配位的 Pb,通过钝化钙钛矿晶体的表面缺陷来抑制界面复合并提高效率。用 PDI-CD 改性的全空气处理碳基 PSC 实现了 11.90% 的可观功率转换效率。