MgSiAs: An Unexplored System with Promising Nonlinear Optical Properties
Woo, KE (Woo, Katherine E.); Wang, J (Wang, Jian); Wu, K (Wu, Kui); Lee, K (Lee, Kathleen); Dolyniuk, JA (Dolyniuk, Juli-Anna); Pan, SL (Pan, Shilie); Kovnir, K (Kovnir, Kirill)
2018
Source PublicationADVANCED FUNCTIONAL MATERIALS
ISSN1616-301X
Volume28Issue:30Pages:1-10
Abstract

Two new non-centrosymmetric ternary compounds, MgSiAs2 and Mg3Si6As8, are discovered via metal flux and solid-state synthetic methods. MgSiAs2 belongs to the well-known II-IV-V-2 family, which is extensively studied experimentally and computationally for their optical properties. MgSiAs2 is computationally predicted but not experimentally known prior to this work. Mg3Si6As8 crystallizes in a new non-centrosymmetric cubic chiral structure type with the Pearson symbol cP68. The syntheses, crystal structure, thermal and chemical stabilities, electronic structures, and optical properties of these two new compounds are investigated in this work. Optical absorption measurements and electronic structure calculations reveal the two compounds to be direct or pseudo-direct bandgap semiconductors (1.8-2 eV). The crystal structures of both compounds are non-centrosymmetric, though Mg3Si6As8 belongs to the 432 chiral crystal class, which is optically active but does not exhibit second harmonic generation (SHG) behavior. The SHG response of MgSiAs2 is 60% of that for AgGaS2, but MgSiAs2 exhibits a higher laser damage threshold than AgGaS2 at 33.2 MW cm(-2).

KeywordChirality Crystal Structures Non-centrosymmetric Materials Second Harmonic Generation Semiconductors
DOI10.1002/adfm.201801589
Indexed BySCI
WOS IDWOS:000439738200022
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Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/5516
Collection中国科学院特殊环境功能材料与器件重点试验室
材料物理与化学研究室
Affiliation1.Iowa State Univ, Dept Chem, Ames, IA 50011 USA
2.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, 40-1 South Beijing Rd, Urumqi 830011, Peoples R China
3.Univ Calif Davis, Davis, CA 95616 USA
4.US DOE, Ames Lab, Ames, IA 50011 USA
Recommended Citation
GB/T 7714
Woo, KE ,Wang, J ,Wu, K ,et al. MgSiAs: An Unexplored System with Promising Nonlinear Optical Properties[J]. ADVANCED FUNCTIONAL MATERIALS,2018,28(30):1-10.
APA Woo, KE .,Wang, J .,Wu, K .,Lee, K .,Dolyniuk, JA .,...&Kovnir, K .(2018).MgSiAs: An Unexplored System with Promising Nonlinear Optical Properties.ADVANCED FUNCTIONAL MATERIALS,28(30),1-10.
MLA Woo, KE ,et al."MgSiAs: An Unexplored System with Promising Nonlinear Optical Properties".ADVANCED FUNCTIONAL MATERIALS 28.30(2018):1-10.
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