室温下快速合成均质大颗粒有机-无机杂化钙钛矿薄膜  

Fast Synthesis of Homogenous Bulky Grain Organic-Inorganic Hybrid Perovskite Thin Films at Room Temperature

作　　者：李新利[1] 李丽华[1] 马战红[1] 黄金亮[1] 任凤章[1] 

机构地区：[1]河南科技大学材料科学与工程学院,洛阳471023

出　　处：《人工晶体学报》2016年第5期1365-1369,共5页Journal of Synthetic Crystals

基　　金：河南省高校重点科研项目(15A430023);河南省国际合作项目(152102410035);河南省科技创新人才计划(144200510001);河南科技大学青年基金(2015QN015)

摘　　要：在室温下,采用超声辅助液相法快速合成了有机-无机杂化钙钛矿薄膜。碘化铅和甲基碘化氨的摩尔比为1∶1,通过超声振荡法溶于γ-丁内酯(GBL)溶液,得到黄色透明液体。采用荧光分光光度计对溶液的光发射谱进行表征,发现在495 nm和826 nm出现特征峰;采用滴涂法以及溶剂蒸发来制备有机-无机杂化钙钛矿薄膜,通过XRD和SEM对薄膜结构和形貌进行分析。结果表明,获得的钙钛矿薄膜是四方晶系,薄膜的晶粒呈现不规则的六边形且尺寸达到微米量级。The organic-inorganic hybrid perovskite thin films were prepared with ultrasonic assisted solution method at room temperature.The molar ratio of lead iodide and methyl iodide ammonia is 1 to 1.Let the reactant dissolve in butyrrolactone solvent with ultrasonic oscillation method,then get yellow transparent liquid.The optical emission spectrum of yellow transparent liquid was characterized by fluorescence spectrophotometer.It is found that there are two characteristic peaks at 495 nm and 826 nm.The organic-inorganic hybrid perovskite thin films were prepared by drop coating and solvent evaporation method.The morphology and microstructure were described via SEM and XRD.The results show that the obtained perovskite films are tetragonal,and the micrometer-scale grains showing irregular hexagon.

关 键 词：液相法 有机-无机杂化钙钛矿薄膜 光发射谱 

分 类 号：O484.1[理学—固体物理]