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所属单位：航天学院

发表刊物：CRYSTAL RESEARCH AND TECHNOLOGY

关键字：dispersion equation perovskites refractive index

摘要：Optical dispersion properties are indispensable in the thorough design of modern perovskite-based photonics devices. Based on inverse temperature crystallization (ITC) method, here, CH3NH3PbX3 (CH(3)NH(3)MA, XCl, Br, I) bulk single crystals are grown from precursor solution. X-ray patterns indicate that the perovskite crystals have good crystallinity. MAPbCl(3), MAPbBr(3), and MAPbI(3) crystals are transparent above 427, 574, and 823 nm, respectively. Refractive indices of MAPbX(3) crystals are measured with different wavelength at 24 degrees C and reduced dramatically with the wavelength increase. Sellmeier dispersion equation fitted by least squares can be used to calculate the refractive index above the absorption edges. Refractive indices rank in the order of MAPbI(3) > MAPbBr(3) > MAPbCl(3) at the same wavelength. The halogen elements have great influence on refractive indices. These results play a vital role in studying MAPbX(3) nonlinear optical properties as well as in further designing photoelectric devices.

ISSN号：0232-1300

是否译文：否

发表时间：2019-05-01

合写作者：Zha, Guoan,Deng, Chenguang,An, Yang,杨文安,Mao, Rong,刘友文,路元刚,Chen, Ziyun

通讯作者：赫崇君,刘友文,赫崇君