title: K3B3O4(OH)4·2H2O: A UV Nonlinear Optical Crystal with Isolated [B3O4(OH)4](3-) Anion Groups.
abstract: A potential ultraviolet (UV) nonlinear optical (NLO) material, K3B3O4(OH)4·2H2O, was successfully synthesized by hydrothermal methods. The compound crystallizes into the Cmc21 space group and exhibits isolated [B3O4(OH)4](3-) anion groups connected by O-H···O hydrogen bonds. The UV-vis diffuse reflectance spectrum shows that K3B3O4(OH)4·2H2O has a wide transparency range with an absorption edge below 190 nm. Powder second harmonic generation (SHG) measurements using 1064 nm radiation revealed a moderate efficiency, 0.8 × KDP. Additional particle size vs SHG efficiency measurements indicate that K3B3O4(OH)4·2H2O is type I phase-matchable. Our calculated results show that the borate groups as well as the waters of hydration determine the NLO properties of K3B3O4(OH)4·2H2O.
authors: 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.|University of Chinese Academy of Sciences , Beijing 100049, China.
authors: Qiong
authors: Q
authors: Liu
authors: 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.
authors: Xiangyu
authors: X
authors: Zhang
authors: 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.
authors: Zhihua
authors: Z
authors: Yang
authors: 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.
authors: Fangfang
authors: F
authors: Zhang
authors: 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.|University of Chinese Academy of Sciences , Beijing 100049, China.
authors: Lili
authors: L
authors: Liu
authors: 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.
authors: Jian
authors: J
authors: Han
authors: 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.
authors: Zhi
authors: Z
authors: Li
authors: 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.
authors: Shilie
authors: S
authors: Pan