The first and only commercially available Ca(OH)2 crystals were grown using float zone synthesis technique to yield perfectly layered, large size, highly crystalline vdW layered crystals. Ca(OH)2 crystals exhibit ~4 eV direct gap and is considered 2D widegap material with exciting applications in photonics, optoelectronics, and high power devices. 
Sample size: ~5-8 mm or larger

Crystal symmetry and Space group: P-3m1

Nature: Layered crystal; can be isolated to monolayers rather easily 

Band gap: ~4.5 eV (bulk) monolayer behavior unknown

Purity: Semiconductor grade (6N) 99.9999%

Growth technique: Float zone technique

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