Li2OLiFZnF2B2O3P2O5: MnO glasses – Thermal, structural, optical and luminescence characteristics

Fluoride-Sulfophosphate/Silica Hybrid Fiber as a Platform for Optically Active Materials

“…The key spectroscopic parameters are also summarized in Table 4. The broadband absorption peak at ∼488 nm and its two shoulder peaks at 405 and 607 nm are assigned to the electronic transitions of 5 E g → 5 T 2g of Mn 3+ (3d 4 configuration, with the characteristic purple coloration), and 6 A 1 ( 6 S) → 4 A 1 ( 4 G), 4 E g ( 4 G), and 6 A 1 ( 6 S) → 4 T 2 ( 4 G) of Mn 2+ (3d 5 configuration), respectively (Reddy et al, 2016). With increasing S/P ratio, the ultraviolet cutoff sideband of the Mn-doped glass shows a distinct blue shift.…”

Excitation‐dependent energy transfer and color tunability in Dy3+/Eu3+ co‐doped multi‐component borophosphate glasses

“…30 The host matrix plays an important role in providing a suitable environment to achieve efficient luminescence through ET. Over the decades, alkaline and alkalisupported mixed glass formers, such as borotellurites, 31 borophosphates, 32 and borosilicates, 33 have been extensively investigated by research fraternity. It is well known that pure borates and phosphates are two different glass network formers.…”

“…In tetrahedral coordination, a negatively charged boron ion is balanced by the phosphorous ion with positive charge, yielding a strong P + -O-Bpair. [32][33][34]35 Notably, borophosphate glass formed by a combination of two glass formers (borate and phosphate) exhibit properties, such as high transparency, transmission in the ultraviolet (UV) to mid-infrared (MIR) range, enhanced thermal stability and ionic conductivity, high glass-transition temperature, wider glass-forming range, and moderately low phonon energy compared with borate-and phosphate-based glasses. [36][37][38][39][40] The addition of an alkali metal oxide (K 2 O) as glass modifier to phosphate glass results in the creation of non-bridging oxygens (NBOs), while the addition of a modifier to borate glass transforms the trigonal (BO 3 ) to tetrahedral (BO 4 ) groups.…”

“…In addition, ZnF 2 enables strong optical transmission in the ultraviolet region and reduces hygroscopicity because of the formation of HF owing to the reaction between OH and F, as well as lowoptical losses in the near-and mid-infrared regions. 32,38 Therefore, considering these interesting features, we chose dual-glass former-based borophosphate (potassium zinc borophosphate) glass and investigated the ET-based luminescence properties by incorporating Dy 3+ and Eu 3+ ion in single and dual combinations as well as their suitability in multicolor-emitting devices. In addition, thermal stability and quantum yield measurements were performed to understand the potential applications of such RE ion combinations in the SSL field as warm white light-emitting devices.…”

“…It has been demonstrated that the addition of B 2 O 3 to a phosphate network results in the transition of long chains of meta‐phosphates into a 3D network of borophosphate glass upon incorporating borate, because of intermixing of $${\rm{BO}}_4^ - $$ and $${\rm{PO}}_4^ + $$ tetrahedral units. In tetrahedral coordination, a negatively charged boron ion is balanced by the phosphorous ion with positive charge, yielding a strong P + ‒O‒B ‒ pair 32–34,35 . Notably, borophosphate glass formed by a combination of two glass formers (borate and phosphate) exhibit properties, such as high transparency, transmission in the ultraviolet (UV) to mid‐infrared (MIR) range, enhanced thermal stability and ionic conductivity, high glass‐transition temperature, wider glass‐forming range, and moderately low phonon energy compared with borate‐ and phosphate‐based glasses 36–40 .…”