The first and only commercially available Ca（OH）? crystals were grown using float zone synthesis technique to yield perfectly layered, large size, highly crystalline vdW layered crystals.

The first and only commercially available Ca(OH)? 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