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Surfactant Sodium Dodecyl Benzene Sulfonate Improves the Efficiency and Stability of Air‐Processed Perovskite Solar Cells with Negligible Hysteresis
Solar RRL ( IF 7.9 ) Pub Date : 2020-09-10 , DOI: 10.1002/solr.202000376
Wenyuan Zhang 1 , Lang He 2 , Dongyan Tang 1 , Xin Li 1
Affiliation  

The device performance of organic–inorganic hybrid halide perovskite solar cells (PSCs) is highly dependent on the quality of perovskite layer. Herein, a multifunctional chemical additive strategy is reported to simultaneously improve the efficiency and stability of fully air‐processed PSCs. The planner methylammonium lead trihalide (MAPbI3)‐based PSCs incorporating sodium dodecyl benzene sulfonate (SDBS) exhibit a champion power conversion efficiency (PCE) of 19.20% and negligible hysteresis, which is one of the top efficiencies of MAPbI3‐based PSCs made in air. The increased efficiency is due to the reduction of defects and inhibition of ion migration in the perovskite films. Furthermore, the enhancement of device performance and stability can also be ascribed to highly preferred and efficient perovskite crystals protecting the perovskite films from humidity. The corresponding unencapsulated device retains 92.34% of its initial efficiency after 90 days (>2100 h) storage in air and maintains 85.20% of its original PCE after being exposed to 85 °C for 27 h. The results indicate that SDBS is a promising chemical additive to enhance the performance of air‐processed PSCs for future applications.

中文翻译:

表面活性剂十二烷基苯磺酸钠提高了滞后作用可忽略不计的空气处理钙钛矿太阳能电池的效率和稳定性

有机-无机混合卤化物钙钛矿太阳能电池(PSC)的器件性能高度依赖于钙钛矿层的质量。本文报道了一种多功能化学添加剂策略,可同时提高完全空气处理的PSC的效率和稳定性。基于规划剂甲基铵三卤化铅(MAPbI 3)的PSC结合了十二烷基苯磺酸钠(SDBS),具有19.20%的最佳功率转换效率(PCE)和可忽略的磁滞,这是MAPbI 3的最高效率之一基于空气的PSC。效率的提高归因于钙钛矿薄膜中缺陷的减少和离子迁移的抑制。此外,装置性能和稳定性的提高也可以归因于高度优选和有效的钙钛矿晶体,其保护钙钛矿膜不受潮。相应的未封装设备在空气中存储90天(> 2100小时)后,保留其初始效率的92.34%,并在暴露于85°C下27小时后,其原始PCE保持85.20%。结果表明,SDBS是一种有前途的化学添加剂,可增强空气处理的PSC的性能,以备将来使用。
更新日期:2020-11-06
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