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Optical dispersion and bandgap of pure and Mn-doped 0.92Na(0.5)Bi(0.5)TiO(3)-0.08K(0.5)Bi(0.5)TiO(3) lead-free single crystals
Wu, Yang; Hu, Yuqing; Xue, Saidong; Zhao, Xiangyong; Wang, Feifei; Tang, Yanxue; Duan, Zhihua; Shi, Wangzhou; Luo, Haosu; Sun, Renbing
2019-12-31
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
SubtypeArticle; Early Access
AbstractOptical properties of lead-free ferroelectric pure and Mn-doped 0.92Na(0.5)Bi(0.5)TiO(3)-0.08K(0.5)Bi(0.5)TiO(3) (NBT-8KBT) single crystals have been investigated systematically. Refractive index and extinction coefficient were measured and the critical parameters are obtained by modified Sellmeier dispersion equations and single-oscillator dispersion relation. The decline of refractive index for Mn:NBT-8KBT could be related to the lattice distortion of the Mn ions doping. High transmittance (>70%) over the transparent region (>400 nm) was found in the pure NBT-8KBT, higher than that of Mn:NBT-8KBT, which could be caused by the increase of domain wall density. An about 100 nm red-shift of absorption edge was observed in the Mn:NBT-8KBT single crystal, which is located in the visible region. Optical bandgap energies calculated through Tauc equation and a large bandgap difference of 2.96 and 2.62 eV occurs in the NBT-8KBT and Mn:NBT-8KBT, respectively, which illustrates the modulation of the band structures by Mn doping.
Keywordbandgap Mn dopant NBT-KBT single crystal optical properties
DOI10.1111/jace.16823
WOS KeywordELECTRICAL-PROPERTIES ; GROWTH ; GAP
Language英语
WOS Research AreaMaterials Science
PublisherWILEY
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27525
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Wu, Yang,Hu, Yuqing,Xue, Saidong,et al. Optical dispersion and bandgap of pure and Mn-doped 0.92Na(0.5)Bi(0.5)TiO(3)-0.08K(0.5)Bi(0.5)TiO(3) lead-free single crystals[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2019.
APA Wu, Yang.,Hu, Yuqing.,Xue, Saidong.,Zhao, Xiangyong.,Wang, Feifei.,...&Sun, Renbing.(2019).Optical dispersion and bandgap of pure and Mn-doped 0.92Na(0.5)Bi(0.5)TiO(3)-0.08K(0.5)Bi(0.5)TiO(3) lead-free single crystals.JOURNAL OF THE AMERICAN CERAMIC SOCIETY.
MLA Wu, Yang,et al."Optical dispersion and bandgap of pure and Mn-doped 0.92Na(0.5)Bi(0.5)TiO(3)-0.08K(0.5)Bi(0.5)TiO(3) lead-free single crystals".JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2019).
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