Photoluminescence properties and effects of dopant concentration in Bi2ZnB2O7:Tb3+ phosphor

Controlling the structure and morphology of zinc borate by adjusting the reaction temperature and pH value: formation mechanisms and luminescent properties

“…24 Therefore, through tuning the reaction conditions, various forms of metal borate have been obtained with different chemical compositions and structures. An example is zinc borate, which can be categorized as hydrous zinc borate: 39 Thulasiramudu, A. et al obtained Eu 3+ /Tb 3+ -doped heavy metal oxide (HMO)-based zinc lead borate glasses by a solidstate reaction method. 40 Therefore, previous research on Tb 3+ doped zinc borate generally involved preparation by a conventional solid-state reaction method, which required high temperatures as well as thorough grinding, and usually resulted in a poor morphology.…”

A new melilite-type rare-earth borate CdTbGaB2O7 and multicolor tunable emission in the CdTb1−xSmxGaB2O7 (0 ≤ x ≤ 0.2) phosphors

“…[25][26][27] Both Ga and B atoms adopt a tetrahedral coordination conguration. However, the Ga atom is located on the 4 axis, thereby resulting in four equal Ga-O bond lengths of 1.824(3) Å and two groups of O-Ga-O bond angles of 107.90 (10)°and 112.7(2)°, while the B atom lies on a mirror plane, giving three groups of B-O distances of 1.419 (7), 1.492 (7) S3 †). Similar GaO 4 and BO 4 groups have already been identied in K 2 Ga 2 O(BO 3 ) 2 and In 4 O 2 B 2 O 7 , respectively.…”

“…For instance, Tb 3+ , Sm 3+ , Eu 3+ and Dy 3+ -doped Bi 2 ZnB 2 O 7 phosphors were synthesized and their luminescent properties were investigated. [10][11][12] When active laser medium (such as Er 3+ , Nd 3+ or Pr 3+ ions) are doped into this crystal structure, the obtained crystals may show both luminescence and NLO properties, which makes them very attractive for the new generation of laser frequency converters, the representative crystals including Bi 2 ZnOB 2 O 6 :-Yb 3+ /Er 3+ , Bi 2 ZnOB 2 O 6 :Nd 3+ and Bi 2 ZnOB 2 O 6 :Pr 3+ . [13][14][15] In addition, not long ago, two new melilite-type borogermanates, Ca 2 GeB 2 O 7 and Ca 1.78 Cd 0.22 GeB 2 O 7 , were also reported, among which Ca 2 GeB 2 O 7 has a short UV cutoff edge (<200 nm), indicating its potential as an optical material in the UV or DUV region.…”

Achieving Multimodal Emission in Zn4B6O13:Tb3+,Yb3+ for Information Encryption and Anti-counterfeiting

“…Tb 3+ ions are considered to be one of the promising species providing optical devices in green and blue regions and have been extensively studied in kinds of compounds. 28 For a green emitting phosphor, Tb 3+ -doped compounds are considered as attractive candidates because the 5 D 4 → 7 F 5 transition of Tb 3+ is around 540 nm. In principle, Tb 3+ has a lower threshold pump power as a green activator than Er 3+ and shorter decay time than Mn 2+ .…”