Luminescence of Ce‐doped borate‐oxyfluoride glass ceramics

Abstract

PACS 78.40. Pg, 78.55.Qr In the present work we studied the possibility to obtain oxyfluoride glass ceramics based on a lithium and potassium borate glasses with addition of fluorides. Lithium-borate glasses without lanthanum fluoride are transparent up to 275 nm. In samples with LaF 3 doped with Ce-activator, an additional absorption at about 300 nm and intense photoluminescence could be observed. Ce-doped potassium-borate glass with addition of fluorides LaF 3 , LiF and GdF 3 was milky and not transparent, an intense photoluminescence has been observed, X-ray diffraction measurements showed a presence of well-pronounced crystalline phases of LiF as well as of GdBO 3 .

Transparent oxyfluoride glass ceramics

“…A c c e p t e d M a n u s c r i p t 34 UV-luminescence of Ce 3+ [59], thermoluminescence of CaF 2 :Eu 3+ and CaF 2 :Sm 3+ [50], X-ray luminescence of CaF 2 :Tb 3+ , Gd 3+ [38] were also observed in oxyfluoride glass ceramics.…”

“…1200 o C for germinate or borate glasses. Preparation of glass ceramics from of aluminosilicate [35-A c c e p t e d M a n u s c r i p t 6 40], silicate [41], silicoborate [42][43][44], lead-silicate [45][46][47], quartz [48][49][50][51][52][53], lead-germanate [54][55][56], tellurate-germanate [57], zinc-tellurate [58], lithiumborate, potassium-borate, barium-borate [59,60], tungsten-lead-phosphate [61] and others glasses with high metal fluoride content is thoroughly described in the literature (see Table 1). …”

Erbium energy bridging upconversion mechanism studies on BAKL:Er3+/Yb3+ glass-ceramics and simultaneous enhancement of color purity of the green luminescence

“…17 The structural properties of these conventional oxyfluoride borate GCs have been explored widely by researchers. 18,19 However, among the existing reported borate GCs, oxyfluoride boroaluminate GCs are seldom reported; however, they have a strong advantage in terms of their composition. Thus, we tried to shed some more light into this quaternary GC composition and chose B 2 O 3 -Al 2 O 3 -KF-LiO (BAKL) GCs, hoping that this could be used as an excellent luminescent host material.…”