The organic-inorganic hybrid perovskite CH_(3)NH_(3)PbI_(3) has been a good candidate for many optoelectronic applications such as light-emitting diodes due to its unique properties.Optimizing the optical properties o...The organic-inorganic hybrid perovskite CH_(3)NH_(3)PbI_(3) has been a good candidate for many optoelectronic applications such as light-emitting diodes due to its unique properties.Optimizing the optical properties of the CH_(3)NH_(3)PbI_(3) material to improve the device performance is a hot topic.Herein,a new strategy is proposed to enhance the light emission of CH_(3)NH_(3)PbI_(3) phosphor effectively.By adding the reactant CH_(3)NH_(3)I powder in an appropriate proportion and simply grinding,the emission intensity of CH_(3)NH_(3)PbI_(3) is greatly improved.The advantages of the proposed method are swiftness,simplicity and reproducibility,and no requirement for a complex organic ligand.The mechanism of this phenomenon is revealed by x-ray diffraction,scanning electron microscopy,energy dispersive spectroscopy,photoluminescence,and temperature-dependent photoluminescence.This study offers a unique insight for optimizing the optical properties of halide perovskite materials.展开更多
基金the National Natural Science Foundation of China(Grant Nos.11774187 and U1902218)the National Key R&D Program of China(Grant No.2018YFE0203400)+1 种基金the Natural Science Foundation of Tianjin City(Grant No.19JCYBJC17600)the 111 Project(Grant No.B07013)。
文摘The organic-inorganic hybrid perovskite CH_(3)NH_(3)PbI_(3) has been a good candidate for many optoelectronic applications such as light-emitting diodes due to its unique properties.Optimizing the optical properties of the CH_(3)NH_(3)PbI_(3) material to improve the device performance is a hot topic.Herein,a new strategy is proposed to enhance the light emission of CH_(3)NH_(3)PbI_(3) phosphor effectively.By adding the reactant CH_(3)NH_(3)I powder in an appropriate proportion and simply grinding,the emission intensity of CH_(3)NH_(3)PbI_(3) is greatly improved.The advantages of the proposed method are swiftness,simplicity and reproducibility,and no requirement for a complex organic ligand.The mechanism of this phenomenon is revealed by x-ray diffraction,scanning electron microscopy,energy dispersive spectroscopy,photoluminescence,and temperature-dependent photoluminescence.This study offers a unique insight for optimizing the optical properties of halide perovskite materials.
