Three novel asymmetrical substituted phthalocyaninecobalt with nitro and (4-butyl formate) phenoxy, (4-propenyl-2-methoxy) phenoxy or (4-methyl formate) phenoxy as different bulky peripheral groups (CoPcNO₂-OBFPh, CoPcNO₂-OPMPh, CoPcNO₂-OMFPh) are successfully developed and applied as dopant-free hole-transporting materials (HTMs) in perovskite solar cells (PSCs). The impact of the different peripheral groups on properties of these phthalocyanines is also investigated. For the modification of bulky aroxy peripheral groups, all of the three metallophthalocyanines exhibit good solubility, suitable hole mobility, high thermal stability, and appropriate HOMO and LUMO energy levels. The most effective device based on CoPcNO₂-OBFPh demonstrates an impressive power conversion efficiency (PCE) of 13.91% under AM 1.5G standard conditions, while CoPcNO₂-OPMPh and CoPcNO₂-OMFPh devices exhibit relative lower PCE of 11.81% and 9.47% respectively. In addition, CoPcNO₂-OBFPh-based PSC shows the best stability after 1008 h in air with 50% relative humidity at room temperature.

三个新颖的不对称取代的酞菁钴，分别具有硝基和（4-丁基甲酸）苯氧基，（4-丙烯基-2-甲氧基）苯氧基或（4-甲基甲酸）苯氧基作为不同的大体积外围基团（CoPcNO ₂ -OBFPh，CoPcNO ₂ -OPMPh， CoPcNO ₂ -OMFPh）已成功开发并用作钙钛矿型太阳能电池（PSC）中的无掺杂空穴传输材料（HTM）。还研究了不同外围基团对这些酞菁性能的影响。为了修饰大体积的芳氧基外围基团，所有三种金属酞菁均显示出良好的溶解性，合适的空穴迁移率，高的热稳定性以及合适的HOMO和LUMO能级。基于CoPcNO ₂的最有效的设备-OBFPh在AM 1.5G标准条件下显示出令人印象深刻的13.91％的功率转换效率（PCE），而CoPcNO ₂ -OPMPh和CoPcNO ₂ -OMFPh器件的相对PCE分别较低，分别为11.81％和9.47％。此外，基于CoPcNO ₂ -OBFPh的PSC在室温下相对湿度为50％的空气中1008小时后显示出最佳稳定性。