Synthesis and characterization of layered perovskite-type organic-inorganic hybrids (R-NH3)2(CH3NH3)Pb2I7

Liling Guo; Zhang Sun; Guanghui Zhao; Xing Li; Hanxing Liu

doi:10.1007/s11595-012-0581-5

Journal of Wuhan University of Technology Materials Science Edition ›› 2012, Vol. 27 ›› Issue (5) : 957 -961. DOI: 10.1007/s11595-012-0581-5

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Synthesis and characterization of layered perovskite-type organic-inorganic hybrids (R-NH₃)₂(CH₃NH₃)Pb₂I₇

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Abstract

Layered organic-inorganic hybrids containing bilayer perovsikte (R-NH₃)₂(CH₃NH₃)Pb₂I₇ (where R=C₁₂H₂₅,C₆H₅C₂H₄) were synthesized by reactions in solution. The influences of the solvents and the reactant ratio on the structures of the products were investigated. The structures and the properties of the hybrids were characterized using X-ray diffraction (XRD) and ultraviolet and visible (UV) adsorption spectra. For comparing with the bilayer perovskite hybrids in structure and band gap magnitude, the hybrids containing monolayer perovskite (R-NH₃)₂PbI₄ were also synthesized and characterized. The results demonstrate that the thickness of inorganic layer has obvious effect on the tunneling magnitude of the band gap but the organic part can be micro actuator of band gap.

Keywords

layered structure / organic-inorganic perovskite-type hybrid / band gap

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Liling Guo, Zhang Sun, Guanghui Zhao, Xing Li, Hanxing Liu. Synthesis and characterization of layered perovskite-type organic-inorganic hybrids (R-NH₃)₂(CH₃NH₃)Pb₂I₇. Journal of Wuhan University of Technology Materials Science Edition, 2012, 27(5): 957-961 DOI:10.1007/s11595-012-0581-5

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