Synthesis and Photoluminescence Properties of the Red‐Emitting Phosphor Mg₃(BN₂)N Doped with Eu²⁺

Abstract

Mg 3 (BN 2 )N was prepared by solid state metathesis reactions and several europium (Eu 2+ ) doped samples were prepared to discover novel red-emitting photoluminescent (PL) materials. It turned out that the undoped and doped samples showed very broad deep-red photoluminescence ranging from about 500 nm into the near infrared. Due to

Defect‐Related Luminescence in ­Nitridoborate Nitride, Mg3Ga(BN2)N2

“…The transitions arising from deep‐level defects with strong electron–phonon couplings usually results in broad bands. Defect luminescence has already been reported for another nitridoborate nitride, namely Mg 3 (BN 2 )N 21. Furthermore, our recent studies also reveal defect‐related emission from undoped Mg 7 Si(BN 2 ) 2 N 4 and Mg 3 Al(BN 2 ) 2 N 4 .…”

“…The splitting is caused by the different chemical surroundings of the [N=B=N] 3– ions. Given that no splitting was observed in the Raman spectra of Mg 3 (BN 2 )N,21 which shows strong defect luminescence, it can be concluded that defects present in the material do not contribute to any splitting.…”

“…Recently, new nitridoborate‐nitrides, namely Mg 3 (BN 2 )N, Mg 7 Si(BN 2 ) 2 N 4 , and Mg 3 Al(BN 2 ) 2 N 4 have been synthesized within our research group 21,22. Following our previous studies we have extended the nitridoborate‐nitride family by introducing a new member, Mg 3 Ga(BN 2 )N 2 .…”

Li4Ba[BN2]2 – Structure and Vibrational Spectra

“…[10] Slightly lower magnetic ordering temperatures (possibly antiferromagnetic ordering) of 9.7, respectively 7.3 K have been reported for Eu 2 [20] Most recent studies concern the luminescence properties of undoped and Eu 2+ doped nitridoborates mainly with respect to red emission. [27][28][29] [2] and Ba 3 [BN 2 ] 2 [9] in the molar ratio of 4:1 in an arc-welded niobium ampoule, which in turn was encapsulated in an evacuated and sealed silica tube to avoid oxidation (typical batch: 0.75-1.5 g). The sample was heated to 1173 K during 4 h, annealed for 10 h and finally cooled down to room temperature within 24 h. The final product consists of transparent white to gray crystallites, which decompose readily under release of NH 3 gas when exposed to air and moisture.…”

Lithium Ion Motion in Lithium Nitridoborate Chalcogenides Li5(BN2)Ch (Ch = Se, Te)

“…For the sake of simplicity we use the distances of Li 5 (BN 2 )Se throughout structural discussions. It may be noted that the telluride was refined on a specimen showing an inverted orientation and due to the single crystal refinement data is supposed to crystallize racemic [refined Flack parameter for this structure 0.7 (3)]. For the sake of a better coherence of the atomic postions in both structures, values for the inverted orientation are given for Li 5 (BN 2 )Te in Table 2.…”