Novel efficient hole-transporting materials based on a 1,1′-bi-2-naphthol core for perovskite solar cells
作者:Wenhua Qiao、Yu Chen、Fusheng Li、Xueping Zong、Zhe Sun、Mao Liang、Song Xue
DOI:10.1039/c6ra25606f
日期:——
efficient hole-transporting materials based on a 1,1′-bi-2-naphthol central core for perovskite solar cells are developed via facile synthesis. The 1,1′-bi-2-naphthol is first applied into the field of perovskite solar cells. The 2,7-carbazole-bis(4-methoxy-phenyl)-amine and 3,6-carbazole-bis(4-methoxy-phenyl)-amine are used as end groups. A reference compound based on a 3,3′-biphenyl core is prepared
通过简便的合成方法,开发了一种基于1,1'-bi-2-萘酚中心核的新型星形高效空穴传输材料,用于钙钛矿型太阳能电池。1,1'-bi-2-萘酚首先应用于钙钛矿太阳能电池领域。2,7-咔唑-双(4-甲氧基-苯基)-胺和3,6-咔唑-双(4-甲氧基-苯基)-胺用作端基。还制备了基于3,3'-联苯核的参考化合物。新材料具有合适的最高占据分子轨道能级,以与CH 3 NH 3 PbI 3的价带很好地匹配,它们的玻璃化转变温度都高于160°C。由基于1,1'-联-2-萘酚和2,7-咔唑-双(4-甲氧基-苯基)-胺的空穴传输材料与碳对电极结合制成的器件可实现最高的功率转换效率在100 mW cm -2的光照下,其光强为8.38%,这与商用螺旋-OMeTAD制成的光强(8.73%)相当。还讨论了暗电流,IPCE和IMVS测量。在1,1'-bi-2-萘酚中央核上引入2,7-咔唑-双(4-甲氧基-苯基)-胺往往会增强器件的J