Division of Advanced Materials, Korea Research Institute of Chemical Technology , 141 Gajeong-Ro, Yuseong-Gu, Daejeon 305-600, Republic of Korea.
J Am Chem Soc. 2013 Dec 26;135(51):19087-90. doi: 10.1021/ja410659k. Epub 2013 Dec 12.
A set of three N,N-di-p-methoxyphenylamine-substituted pyrene derivatives have successfully been synthesized and characterized by (1)H/(13)C NMR spectroscopy, mass spectrometry, and elemental analysis. The optical and electronic structures of the pyrene derivatives were adjusted by controlling the ratio of N,N-di-p-methoxyphenylamine to pyrene, and investigated by UV/vis spectroscopy and cyclic voltammetry. The pyrene derivatives were employed as hole-transporting materials (HTMs) in fabricating mesoporous TiO2/CH3NH3PbI3/HTMs/Au solar cells. The pyrene-based derivative Py-C exhibited a short-circuit current density of 20.2 mA/cm(2), an open-circuit voltage (Voc) of 0.886 V, and a fill factor of 69.4% under an illumination of 1 sun (100 mW/cm(2)), resulting in an overall power conversion efficiency of 12.4%. The performance is comparable to that of the well-studied spiro-OMeTAD, even though the Voc is slightly lower. Thus, this newly synthesized pyrene derivative holds promise as a HTM for highly efficient perovskite-based solar cells.
成功合成了一组三种 N,N-二对甲氧基苯胺取代的并苯衍生物，并通过（1）H/（13）C NMR 光谱、质谱和元素分析进行了表征。通过控制 N,N-二对甲氧基苯胺与并苯的比例来调节并苯衍生物的光学和电子结构，并通过紫外/可见光谱和循环伏安法进行了研究。将这些并苯衍生物用作介孔 TiO2/CH3NH3PbI3/HTMs/Au 太阳能电池中的空穴传输材料（HTMs）。基于并苯的衍生物 Py-C 在 1 太阳（100 mW/cm2）光照下表现出 20.2 mA/cm2 的短路电流密度、0.886 V 的开路电压（Voc）和 69.4%的填充因子，导致整体功率转换效率为 12.4%。其性能可与经过充分研究的 spiro-OMeTAD 相媲美，尽管 Voc 略低。因此，这种新合成的并苯衍生物有望成为高效钙钛矿基太阳能电池的 HTM。
