A Synergy Effect of Coadditives for Vertical Orientation of Two-Dimensional Perovskite Solar Cells Based on Butylammonium Iodide with Improved Efficiency,ACS Applied Energy Materials

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A Synergy Effect of Coadditives for Vertical Orientation of Two-Dimensional Perovskite Solar Cells Based on Butylammonium Iodide with Improved Efficiency
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-10-15 , DOI: 10.1021/acsaem.1c02812
Maurice Davy Malouangou ₁ , Jadel Tsiba Matondo ₁ , Luyun Bai ₁ , Manala Mbumba ₁ , YiFan Yang ₁ , Muhammad Waleed Akram ₁ , Mina Guli ₁

Affiliation

Two-dimensional (2D) perovskites show better resistance and optoelectronic characteristics than three-dimensional compounds. However, the high exciton energy and insufficient interfacial charge flow significantly reduce perovskite device performance. In this regard, a strategy to obtain high-performance 2D perovskite solar cells employing synergistic impact of coadditives (NH₄SCN and HCl) to enable the proper alignment of perovskite films through the substrate, which eventually increases crystallinity and charge transport of 2D perovskites and reduces defect states, is presented. This coadditive method successfully generates homogeneous 2D perovskite films with consistent crystal structures and higher film quality. The champion 2D perovskite device exhibited a photovoltaic performance of 16.45% with an improved J_sc. These results suggest that developing additive engineering might result in remarkably stable and efficient 2D perovskite materials.

中文翻译：

共添加剂对基于碘化丁基铵的二维钙钛矿太阳能电池垂直取向的协同效应提高效率

二维 (2D) 钙钛矿显示出比三维化合物更好的电阻和光电特性。然而，高激子能量和不足的界面电荷流显着降低了钙钛矿器件的性能。在这方面，利用共添加剂（NH ₄SCN 和 HCl) 使钙钛矿薄膜通过基板正确排列，最终增加了 2D 钙钛矿的结晶度和电荷传输并减少了缺陷状态。这种共加法成功地生成了具有一致晶体结构和更高薄膜质量的均匀二维钙钛矿薄膜。冠军 2D 钙钛矿设备表现出 16.45% 的光伏性能和改进的J _sc。这些结果表明，开发增材工程可能会产生非常稳定和高效的二维钙钛矿材料。

更新日期：2021-11-22

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