In the present work,an improved hot injection technique,namely microwave-assisted hot injection,for mass production of Mn^(2+)-doped CsPbCl_(3)(Mn^(2+):CsPbCl_(3))perovskite nanocrystals(NCs)was reported.This strategy...In the present work,an improved hot injection technique,namely microwave-assisted hot injection,for mass production of Mn^(2+)-doped CsPbCl_(3)(Mn^(2+):CsPbCl_(3))perovskite nanocrystals(NCs)was reported.This strategy combines the advantages of both microwave irradiation and hot injection,which represents characteristics such as homogeneous heating and rapid production of Mn^(2+):CsPbCl_(3)NCs with a homogeneous size distribution.Meanwhile,it exhibits the capacity for gram-scale synthesis of Mn^(2+):CsPbCl_(3)NCs.The Mn^(2+)doping concentrations can be facilely tailored by controlling the reaction temperatures and feed ratios of the MnCl_(2)precursor,resulting in their enhanced optical properties with a PL QY up to 65%,which is the highest among the Mn^(2+)-doped perovskite NCs ever reported.The as-constructed light emitting diodes(LEDs)based on Mn^(2+):CsPbCl_(3)NCs emit highly bright white light,suggesting their potential applications in optoelectronic devices.展开更多
基金supported by the National Natural Science Foundation for Excellent Young Scholars of China(Grant No.51522402)the National Natural Science Foundation of China(NSFC,Grant No.51572133,51672137 and 51702175)+1 种基金the Zhejiang Provincial Nature Science Foundation(Grant No.LQ17E020002)the and Natural Science Foundation of Ningbo Municipal Government(Grant No.2017A610002).
文摘In the present work,an improved hot injection technique,namely microwave-assisted hot injection,for mass production of Mn^(2+)-doped CsPbCl_(3)(Mn^(2+):CsPbCl_(3))perovskite nanocrystals(NCs)was reported.This strategy combines the advantages of both microwave irradiation and hot injection,which represents characteristics such as homogeneous heating and rapid production of Mn^(2+):CsPbCl_(3)NCs with a homogeneous size distribution.Meanwhile,it exhibits the capacity for gram-scale synthesis of Mn^(2+):CsPbCl_(3)NCs.The Mn^(2+)doping concentrations can be facilely tailored by controlling the reaction temperatures and feed ratios of the MnCl_(2)precursor,resulting in their enhanced optical properties with a PL QY up to 65%,which is the highest among the Mn^(2+)-doped perovskite NCs ever reported.The as-constructed light emitting diodes(LEDs)based on Mn^(2+):CsPbCl_(3)NCs emit highly bright white light,suggesting their potential applications in optoelectronic devices.
