Anionic Aliovalent Substitution from Structure Models of ZnS: Novel Defect Diamond‐like Halopnictide Infrared Nonlinear Optical Materials with Wide Band Gaps and Large SHG Effects
作者:Jindong Chen、Chensheng Lin、Dan Zhao、Min Luo、Guang Peng、Bingxuan Li、Shunda Yang、Yingshuang Sun、Ning Ye
DOI:10.1002/anie.202010319
日期:2020.12.21
parallel‐oriented [MIIPnI3] mixed‐anionic tetrahedral groups, leading to excellent physical properties including wide band gaps (2.38–2.85 eV), large second harmonic generation responses (2.7–5.1×AgGaS2), high laser‐induced damage thresholds (5.5–10.7×AgGaS2), and good IR transparency. In particular, Cd3PI3 and Cd3AsI3 achieved phase‐matching (Δn=0.035 and 0.031) that their template β‐ZnS could not do.
为了设计具有宽禁带宽度和较大二次谐波生成量的光子非线性光学材料,通过以钻石状ZnS作为模板的阴离子异价取代将重卤素I引入到光子中。因此,获得了四种出色的基于卤虫肽的红外非线性光学晶体M II 3 PnI 3(M II = Zn,Cd; Pn = P,As)。它们都显示出具有高度平行[M II PnI 3 ]混合阴离子四面体基团的缺陷类金刚石结构,从而导致出色的物理性能,包括宽带隙(2.38–2.85 eV),大的二次谐波响应(2.7–5.1) ×AgGaS 2),高激光诱导损伤阈值(5.5-10.7×AgGaS2),以及良好的红外透明性。特别是Cd 3 PI 3和Cd 3 AsI 3实现了模板β-ZnS不能实现的相位匹配(Δn = 0.035和0.031)。阴离子异价取代为设计新颖的有希望的卤代核苷酸IR NLO材料提供了可行的策略。