通过 SnF₂-吡嗪配合物制备高效甲脒碘化锡钙钛矿太阳能电池。
Fabrication of Efficient Formamidinium Tin Iodide Perovskite Solar Cells through SnF₂-Pyrazine Complex.
机构信息
Division of Advanced Materials, Korea Research Institute of Chemical Technology , 141 Gajeong-Ro, Yuseong-Gu, Daejeon 305-600, Republic of Korea.
School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 689-798, Republic of Korea.
出版信息
J Am Chem Soc. 2016 Mar 30;138(12):3974-7. doi: 10.1021/jacs.6b00142. Epub 2016 Mar 17.
To fabricate efficient formamidinium tin iodide (FASnI3) perovskite solar cells (PSCs), it is essential to deposit uniform and dense perovskite layers and reduce Sn(4+) content. Here we used solvent-engineering and nonsolvent dripping process with SnF2 as an inhibitor of Sn(4+). However, excess SnF2 induces phase separation on the surface of the perovskite film. In this work, we report the homogeneous dispersion of SnF2 via the formation of the SnF2-pyrazine complex. Consequently, we fabricated FASnI3 PSCs with high reproducibility, achieving a high power conversion efficiency of 4.8%. Furthermore, the encapsulated device showed a stable performance for over 100 days, maintaining 98% of its initial efficiency.
为了制备高效的甲脒碘化锡（FASnI3）钙钛矿太阳能电池（PSCs），沉积均匀致密的钙钛矿层并降低 Sn(4+) 含量是至关重要的。在这里，我们使用溶剂工程和非溶剂滴落工艺，使用 SnF2 作为 Sn(4+) 的抑制剂。然而，过量的 SnF2 会导致钙钛矿薄膜表面的相分离。在这项工作中，我们通过形成 SnF2-吡嗪配合物来实现 SnF2 的均匀分散。因此，我们制备了具有高重复性的 FASnI3 PSCs，获得了 4.8%的高光功率转换效率。此外，封装器件的性能稳定超过 100 天，保持了初始效率的 98%。
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