Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo 315201, China.
University of Chinese Academy of Sciences , Beijing 100049, China.
ACS Appl Mater Interfaces. 2017 Sep 20;9(37):31357-31361. doi: 10.1021/acsami.7b11977. Epub 2017 Sep 8.
Here, we report that the performance of perovskite solar cells (PSCs) can be improved by aggregation control in polyelectrolytes interlayer. Through counterions tailoring and solvent optimization, the strong aggregation of polyelectrolytes P3CT-Na can be broken up by P3CT-CHNH. When using P3CT-CHNH to replace P3CT-Na as hole transport layer, the average efficiency is greatly improved from 16.9 to 18.9% (highest 19.6%). Importantly, efficiency over 15% is obtained in 1 cm devices with P3CT-CHNH, ∼50% higher than that with P3CT-Na (10.3%). Our work demonstrates the important role of aggregation control in polyelectrolytes interlayer, providing new opportunities to promote its application in PSCs.
在这里，我们报告说，通过在聚电解质层中进行聚集控制，可以提高钙钛矿太阳能电池（PSCs）的性能。通过反离子剪裁和溶剂优化，可以破坏聚电解质 P3CT-Na 的强聚集，当使用 P3CT-CHNH 代替 P3CT-Na 作为空穴传输层时，平均效率从 16.9%大幅提高到 18.9%（最高 19.6%）。重要的是，使用 P3CT-CHNH 可以在 1 cm 的器件中获得超过 15%的效率，比使用 P3CT-Na（10.3%）高约 50%。我们的工作证明了聚电解质层中聚集控制的重要作用，为在 PSCs 中推广它的应用提供了新的机会。
