Zhang R, Su X, Zhang J, Wen D, Huang Y. Ba
2Zn
2B
6O
13: coplanar [B
2O
5] in unnoted U-shaped [B
6O
13] groups achieving large birefringence.
Chem Commun (Camb) 2022;
58:10182-10185. [PMID:
36000291 DOI:
10.1039/d2cc03529d]
[Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Currently, π-conjugated [B2O5] moieties are rarely studied for designing deep-UV birefringent crystals. Here, we report a new deep-UV birefringent crystal Ba2Zn2B6O13 with a deep-UV cut-off edge of 190 nm and large birefringence (Δn = 0.085@ 532 nm), indicating that it can be used as the birefringent material in the DUV area. The first-principles calculation analyses suggest that its large birefringence mainly originates from the coplanar [B2O5] dimers in the unnoted U-shaped [B6O13].
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