Na4MgM2Se6 (M = Si, Ge): The First Noncentrosymmetric Compounds with Special Ethane-like [M2Se6](6-) Units Exhibiting Large Laser-Damage Thresholds.
Two new noncentrosymmetric compounds, Na4MgM2Se6 (I, M = Si; II, M = Ge), that contain special ethane-like [M2Se6](6-) units were reported for the first time. Remarkably, they exhibit high laser-damage thresholds [9 (I) and 7 (II) × benchmark AgGaS2] and moderate second-harmonic-generation responses with type I phase matching.
Key Laboratory of Functional Materials and Devices for Special Environments of CAS; Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics & Chemistry of CAS , 40-1 South Beijing Road, Urumqi 830011, China.
Kui
K
Wu
Key Laboratory of Functional Materials and Devices for Special Environments of CAS; Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics & Chemistry of CAS , 40-1 South Beijing Road, Urumqi 830011, China.
Zhihua
Z
Yang
Key Laboratory of Functional Materials and Devices for Special Environments of CAS; Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics & Chemistry of CAS , 40-1 South Beijing Road, Urumqi 830011, China.
Shilie
S
Pan