The host structure of the new phosphor Sr 6 (BO 3 ) 3 BN 2 :Eu 2+ crystallizes tetragonally (Sr 6 (BO 3 ) 3 BN 2 , P4 2 / mbc, Z = 8, a = 12.8173(3) Å, b = 14.0740(5) Å, R int = 0.037, R 1 = 0.052, and wR 2 = 0.121) and features the two borate anions BN 2 3− localized within a channel formed by Sr 2+ and BO 3 3− in the same material. Furthermore, spectroscopic data (infrared, Raman, and UV−vis) are discussed, and the first results on the luminescence properties of Sr 6 (BO 3 ) 3 BN 2 :Eu 2+ with an emission−emission peaking at 618 nm upon excitation peaking at 465 nm are presented. Electronic structure calculations yield a band gap of 3.91 eVwith the nitrogen atoms being responsible for the smaller band gap than oxoboratesand confirm the disorder of the BN 2 3− ions.

No abstract