The broadband emissions related to self-trapped excitons(STEs)have attracted considerable attention due to their potential wide application in optoelectronics.Yet,such materials require appropriate band gaps,which are...The broadband emissions related to self-trapped excitons(STEs)have attracted considerable attention due to their potential wide application in optoelectronics.Yet,such materials require appropriate band gaps,which are significantly related to the structural geometry.Herein,a new 3D lead chloride hybrid,(H_(2)MPP)_(2)Pb_(5)Cl_(14),where H_(2)MPP=1-methylpiperidinium-4-amine,consisting of face,corner and edgesharing lead chloride polyhedra,has been successfully isolated.Interestingly,in addition to its semiconducting properties,(H_(2)MPP)_(2)Pb_(5)Cl_(14) exhibits broadband white-red light emission with a large Stokes shift,a high color rendering index,and a nanosecond lifetime,which is mainly attributed to the STE mechanism.Moreover,(H_(2)MPP)_(2)Pb_(5)Cl_(14) exhibits higher stability under moisture,UV light and heat.展开更多
基金supported by the National Natural Science Foundation of China(No.21971203)the Key Scientific and Technological Innovation Team of Shaanxi Province(No.2020TD-001)+1 种基金the Fundamental Research Funds for Central Universities,State Key Laboratory of Electrical Insulation and Power Equipment(No.EIPE23409)the Instrument Analysis Center of Xi’an Jiaotong University for assistance.
文摘The broadband emissions related to self-trapped excitons(STEs)have attracted considerable attention due to their potential wide application in optoelectronics.Yet,such materials require appropriate band gaps,which are significantly related to the structural geometry.Herein,a new 3D lead chloride hybrid,(H_(2)MPP)_(2)Pb_(5)Cl_(14),where H_(2)MPP=1-methylpiperidinium-4-amine,consisting of face,corner and edgesharing lead chloride polyhedra,has been successfully isolated.Interestingly,in addition to its semiconducting properties,(H_(2)MPP)_(2)Pb_(5)Cl_(14) exhibits broadband white-red light emission with a large Stokes shift,a high color rendering index,and a nanosecond lifetime,which is mainly attributed to the STE mechanism.Moreover,(H_(2)MPP)_(2)Pb_(5)Cl_(14) exhibits higher stability under moisture,UV light and heat.
