Aktas Ece, Jiménez-López Jesús, Azizi Kobra, Torres Tomas, Palomares Emilio
Institute of Chemical Research of Catalonia (ICIQ-BIST), Avda. PaÏsos Catalans, 16, Tarragona, E-43007, Spain.
Nanoscale Horiz. 2020 Oct 1;5(10):1415-1419. doi: 10.1039/d0nh00443j. Epub 2020 Aug 28.
The use of self-assembled monolayers (SAMs) as selective charge extracting layers in perovskite solar cells is a great approach to replace the commonly used charge selective contacts, as they can easily modify the interface to enhance the final solar cell performance. Here, we report a novel synthetic approach of the commonly known zinc phtalocyanine (ZnPc) molecule TT1, widely employed in dye-sensitized solar cells and previously used in perovskite solar cells. TT1 is used as a p-type selective contact, and it demonstrates its ability to form SAM on top of the indium tin oxide (ITO) transparent electrode, obtaining higher efficiencies compared to Pedot:PSS based perovskite solar cells. The differences observed, with an enhanced open-circuit voltage and overall efficiency in TT1 devices are correlated with differences in energetics rather than recombination kinetics.
在钙钛矿太阳能电池中使用自组装单分子层（SAMs）作为选择性电荷提取层是取代常用电荷选择性接触的一种好方法，因为它们可以轻松修饰界面以提高最终的太阳能电池性能。在此，我们报告了一种已知的锌酞菁（ZnPc）分子TT1的新型合成方法，该分子广泛应用于染料敏化太阳能电池，之前也用于钙钛矿太阳能电池。TT1用作p型选择性接触，它展示了在氧化铟锡（ITO）透明电极顶部形成SAM的能力，与基于聚（3,4-乙撑二氧噻吩）：聚苯乙烯磺酸盐（Pedot:PSS）的钙钛矿太阳能电池相比，获得了更高的效率。在TT1器件中观察到的差异，即开路电压和整体效率的提高，与能量学差异而非复合动力学差异相关。
