Phase formation and photoluminescence properties of Sm3+ doped Al5BO9 phosphor

Al5BO9: A Wide Band Gap, Damage‐Tolerant, and Thermal Insulating Lightweight Material for High‐Temperature Applications

“…[7][8][9][10] Among the B-containing mullite ceramics, Al 5 BO 9 is intriguing because it has a low theoretical density of 2.95 g/cm 3 and is promising for applications as substrates for catalytic converters, optically translucent ceramics for high-temperature windows, neutron absorbers in nuclear plant, thermal sealing and insulating materials in hypersonic vehicles, and reinforcements for soft metals and ceramics. [11][12][13] A number of efforts have been devoted to fabricate Al 5 BO 9 powders, whisker, and nanowires, [14][15][16][17][18][19] and to investigate the mechanical and thermal properties of Al 5 BO 9 . Gatta et al 9,10 investigated the phase stability of Al 5 BO 9 under high pressure of up to 25.6 GPa by in situ single-crystal synchrotron X-ray diffraction with a diamond anvil cell under hydrostatic conditions.…”

Structural and optical properties of a new Milarite type Na3Mg4LiSi12O30:Eu3+ phosphor

“…This resulted in a process of cross‐relaxation. The critical energy transfer distance (R c ), defined by Blasse as the average smallest separation between adjacent Eu 3+ ions, can be estimated using Equation 6: [ 81–83 ] where x c = 0.11 (critical activator ion concentration at which quenching occurs), N = 2 (number of substitutable sites in the unit cell), and V = 1266.67 Å 3 (volume of the unit cell). According to Blasse, nonradiative energy transmission in oxidic phosphor relies on resonance transfer via exchange interactions or electric multipole–multipole interactions.…”

“…This resulted in a process of cross-relaxation. The critical energy transfer distance (R c ), defined by Blasse as the average smallest separation between adjacent Eu 3+ ions, can be estimated using Equation 6: [81][82][83]…”

Synthesis, characterization, and thermoluminescence‐based high‐dose neutron and gamma dosimetry study of Al5BO9: Mn, Li nanophosphor

“…Aluminum borate (Al 5 BO 9 ), a special class of material with a mullite‐type structure (more specifically called “boromullite”) gained significant importance in ceramic industry due to its low density, high mechanical strength, low thermal expansion coefficient, damage tolerance, and so on 1–7 . Al 5 BO 9 was investigated widely for its crystal structure, physical, thermal properties, and its applications in various fields, namely, nonlinear optics, solid‐state lighting, and so on 8–18 . However, till date there were no reports in the field of radiation dosimetry where thermoluminescence (TL) is one of the most widely used techniques that covers personnel, clinical, and food irradiation dosimetry 19 .…”

“…[1][2][3][4][5][6][7] Al 5 BO 9 was investigated widely for its crystal structure, physical, thermal properties, and its applications in various fields, namely, nonlinear optics, solid-state lighting, and so on. [8][9][10][11][12][13][14][15][16][17][18] However, till date there were no reports in the field of radiation dosimetry where thermoluminescence (TL) is one of the most widely used techniques that covers personnel, clinical, and food irradiation dosimetry. 19 Interestingly, Al 5 BO 9 host matrix offers several desirable and advantageous features: (i) it is a near-tissue-equivalent material with Z eff = 10.8 (Section SI-1), which is close to human tissue (Z eff = 7.42); (ii) it is an insulator having a bandgap of 5.95 eV, which is highly desirable for TL dosimetry applications.…”