Na2BaMQ4(M=Ge,Sn; Q=S,Se):Infrared Nonlinear Optical Materials with Excellent Performances and that Undergo Structural Transformations
Infrared nonlinear optical(IR NLO)materials with excellent performances are particularly important in laser technology.However,to design and synthesize an efficient IR NLO material with a balance between the optical band gap and the NLO coefficient is still a huge challenge.With this in mind,four new IR NLO materials Na2BaSnS4,Na2 BaSnSe4,Na2BaGeS4,and Na2BaGeSe4 were successfully designed and synthesized.The compounds exhibit excellent properties with a suitable balance of band gap and NLO coefficient measured for Na2BaSnS4(3.27 eV and about 17 ×KDP,that is,about 17 times that of KH2PO4(KDP))and Na2BaGeS4(3.7 eV and about 10 × KDP),demonstrating that the systems satisfy the key requirements as promising IR NLO candidates.Remarkably,the new compounds also undergo a novel structural transformation from tetragonal to trigonal systems,the first time that this has been reported for quaternary metal chalcogenides.
Kui Wu Zhihua Yang Shilie Pan
Key Laboratory of Functional Materials and Devices for SpecialEnvironments of CAS;Xinjiang Technical Institute of Physics & Chemistry of CAS;Xinjiang Key Laboratory of Electronic Information Materials andDevices
国内会议
大连
英文
913-916
2016-09-24（万方平台首次上网日期，不代表论文的发表时间）