A series of new infrared NLO semiconductors, ZnY6Si2S14, Al(x)Dy3(Si(y)Al(1-y))S7, and Al0.33Sm3SiS7.
A series of new infrared NLO semiconductors, ZnY6Si2S14, Al(x)Dy3(Si(y)Al(1-y))S7, and Al0.33Sm3SiS7.
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DOI：
10.1021/ic802443n
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发表时间：
2009-07
影响因子：
4.6
通讯作者：
Sheng-ping Guo;G. Guo;Ming‐Sheng Wang;J. Zou;Gang Xu;Guojian Wang;X. Long;Jin-shun Huang
中科院分区：
文献类型：
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作者：
Sheng-ping Guo;G. Guo;Ming‐Sheng Wang;J. Zou;Gang Xu;Guojian Wang;X. Long;Jin-shun Huang
四个新的四元等结构稀土硫代硅酸盐，Zny(6)Si(2)S(14)(1)，Al(0.50)Dy(3)(Si(0.50)Al(0.50))S(7)(2)，Al(0.38)Dy(3)(Si(0.85)Al(0.15))S(7)(3)，Al(0.33)Sm(3)SiS(7)(4)，在手性和极性空间群P6(3)中结晶，都是通过一种简单的合成程序准备的。化合物1-3在2.1 nm处表现出较强的倍频效应，其中1、2、3的倍频强度分别约为KTP(KTiOPO(4))的2、2、1倍。1的能带结构表明，BLN(6)M(2)Q(14)和AlN(3)MQ(7)族化合物的光吸收主要归因于从Q-p到Ln-4f(Y为4d)的电荷跃迁。化合物2-4表现出类反铁磁相互作用。
Four new quaternary isostructural rare-earth thiosilicates, ZnY(6)Si(2)S(14) (1), Al(0.50)Dy(3)(Si(0.50)Al(0.50))S(7) (2), Al(0.38)Dy(3)(Si(0.85)Al(0.15))S(7) (3), and Al(0.33)Sm(3)SiS(7) (4), crystallized in the chiral and polar space group P6(3), have been prepared by a facile synthetic routine. Compounds 1-3 show strong second harmonic generation effects at 2.1 um with the intensities of 1, 2, and 3 being about 2, 2, and 1 times that of KTP (KTiOPO(4)), respectively. The calculated band structure of 1 implies that the optical absorptions of BLn(6)M(2)Q(14) and ALn(3)MQ(7) family compounds are mainly ascribed to the charge transitions from Q-p to Ln-4f (4d for Y) states. Compounds 2-4 exhibit antiferromagnetic-like interactions.