化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (6) : 153-156.

科学研究

有机-无机CH₃NH₃PbX₃材料的合成及表征

于嫚, 程睿璞

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Synthesis and characterization of organic-inorganic CH₃NH₃PbX₃ material

Yu Man, Cheng Ruipu

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文章历史 +

Received		Published
2019-10-29		2020-06-20
Issue Date	Revised Date
2020-07-02	2019-10-29

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摘要

采用配体辅助再沉淀法来制备钙钛矿材料CH₃NH₃PbX₃(X=Cl、Br、I),通过优化调控添加剂油胺的量,由产率进行比较分析,确定了3种钙钛矿材料的最佳制备条件。对合成的每种钙钛矿材料,利用扫描电子显微镜(SEM)对其进行组织形貌分析。X射线衍射仪(XRD)发现钙钛矿材料在(110)和(220)晶面存在明显的衍射峰。吸收光谱和荧光光谱的表征结果发现随着CH₃NH₃PbX₃中X原子序数的增大,吸收带边红移和荧光发射峰均呈现红移,CH₃NH₃PbCl₃、CH₃NH₃PbBr₃和CH₃NH₃PbI₃特征荧光发射峰分别在446nm、478nm和774nm附近。

Abstract

The perovskite CH₃NH₃PbX₃ (x=Cl,Br,I) was prepared by the ligand-assisted reprecipitation method.The optimum preparation conditions of three perovskite materials were determined by optimizing the amount of additive oleamine and comparing the yield.The microstructure of each synthesized perovskite materials was analyzed by scanning electron microscopy (SEM).X-ray diffractometer (XRD) found that the material had obvious diffraction peaks on the (110) and (220) crystal faces.The characterization of absorption and fluorescence spectra showed that with the increase of X atomic number in CH₃NH₃PbX₃,the red shift of the absorption band and the fluorescence emission peak showed red shift.The characteristic fluorescence emission peaks of CH₃NH₃PbCl₃,CH₃NH₃PbBr₃ and CH₃NH₃PbI₃ were at 446nm,478nm and 774nm,respectively.

关键词

钙钛矿材料 / 合成 / CH₃NH₃PbX₃(X=Cl、Br、I) / 光谱性能

Key words

perovskite material / synthesis / CH₃NH₃PbX₃ (X=Cl,Br,I) / spectral property

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有机-无机CH₃NH₃PbX₃材料的合成及表征[J]. 化工新型材料, 2020, 48(6): 153-156 DOI:

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