Nontoxic KBBF Family Member Zn₂BO₃(OH): Balance between Beneficial Layered Structure and Layer Tendency.

ABSTRACT: The conflict between beneficial layered structure for performances and layered growth habits in KBe₂BO₃F₂ (KBBF) always restricts its practical applications. A beryllium-free KBBF family member, Zn₂BO₃(OH), is explored to feature the same topological layer with KBBF by replacing [BeO₃F]^5- with [ZnO₃(OH)]^5- and excellent UV performances. It exhibits a second harmonic generation response of about 1.5 × KH₂PO₄ with the UV cutoff edge of 204 nm. The birefringence of Zn₂BO₃(OH) in the visible region is about 0.067, which is larger than those of commercial UV crystals LiB₃O₅, CsB₃O₅, and CsLiB₆O₁₀. Additionally, it has excellent thermal and water-resistant stabilities. Owing to the removal of interlayer cations, Zn₂BO₃(OH) shows better growth habits than KBBF while achieving the balance between beneficial layered structure and layer tendency.

SUBMITTER: Wang X 

PROVIDER: S-EPMC6864501 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature