Non-linear infrared inorganic optical crystal and its preparing process
A technology of nonlinear optics and crystal materials, applied to the growth of polycrystalline materials, active dielectric materials, chemical instruments and methods, etc., can solve the problems of laser damage, small bandwidth of semiconductor materials, etc., and achieve air stability and good thermal stability Effect
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Embodiment 1
[0017] 0.81g (4mmol) CsBr and 1.46g (4mmol) CdI 2 Mix in about 3ml of double-distilled water, stir at 100°C for 3 hours, cool to room temperature naturally, and gradually precipitate a large number of colorless rod-shaped crystals. Suction filtration, and dry the product under an infrared lamp. Example 2: CsCdBr 3 single crystal growth
Embodiment 2
[0017] 0.81g (4mmol) CsBr and 1.46g (4mmol) CdI 2 Mix in about 3ml of double-distilled water, stir at 100°C for 3 hours, cool to room temperature naturally, and gradually precipitate a large number of colorless rod-shaped crystals. Suction filtration, and dry the product under an infrared lamp. Example 2: CsCdBr 3 single crystal growth
[0018] CsCdBr 3 The aqueous solution was placed in a 35°C incubator. Add small transparent seeds with no obvious defects. After 1 to 2 months, the hexagonal column-shaped transparent single crystal that grows into a larger size is the desired crystal material.
[0019] The obtained compound has been determined by X-ray single crystal structure, and its crystal structure arrangement is shown in the accompanying drawing. It can be seen that the anionic groups of this compound are in octahedral configuration, and form a one-dimensional chain structure in the form of coplanarity. The bond length analysis shows that the six Cd-Br bond length...
Embodiment 3
[0021] CsCdBr 3 Preparation: equimolar amounts of CsBr and CdI 2 Dissolve in double distilled water, reflux until the solution becomes transparent, filter, cool naturally, separate the precipitate and dry to obtain CsCdBr 3 .
[0022] CsCdBr 3 Single crystal growth: the resulting CsCdBr 3 Put it in a container, add twice-distilled water, heat to dissolve, put it in a constant temperature bath at 60°C, add a small transparent seed crystal without obvious defects, and after 15 days, it will grow into a larger-sized hexagonal column-shaped transparent single crystal. required crystal material.
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