Structures, photoluminescence, and principles of self-activated phosphors

Abstract

The self-activated phosphors without any luminescent dopants, usually displaying excellent optical properties, such as high oscillator strength, large stokes shift and strong luminescence efficiency, have been widely investigated by researchers...

Characteristics of planar and planar layer-stacked CHON-containing molecules

“…18,41 Additionally, -NH 2 is helpful for increasing the internal energy of molecules compared with CrystEngComm Paper -OH, as the N atom is usually regarded as an isolating atom. 42 All these factors could be the root of the dominance of -NH 2 . -CN is much like the halogen atom Cl in introducing saturated bonds into ring structures, thereby enhancing stability, and it serve as a fuel group or intermediate for further synthesis.…”

“…Even though many of the molecules have OBs that fall in the range of those of hazardous materials, −120% to +80%, most of them can hardly serve as energetic compounds, as the O atoms have been directly linked with C and H atoms, i.e., they are typically stable ones. 42 3.1.3. Bonding patterns of H atoms.…”

Trap engineering through chemical doping for ultralong X-ray persistent luminescence and anti-thermal quenching in Zn2GeO4

“…Native defect phosphors are an ideal candidate for applications such as solid-state lighting, medical diagnosis, optical tagging, optical storage, photocatalysis and anti-counterfeiting. 1 Over the past decades, native defect phosphors have attracted scientific attention owing to the wide scope for modulating the emission output, photoluminescence quantum yield (PLQY), afterglow, and thermal quenching (TQ) via defect engineering. 2,3 In the past, the trap-tuning strategy was investigated in several native defect phosphors to achieve improved PLQY and afterglow.…”

Multifaceted insight into the cation-disordered self-activated luminescence of Zn3V2O8 compositions for lighting and pigment applications

“…The inherent luminescence properties of self-activated phosphors containing metal-oxygen groups, such as VO 4 3À , NbO , MoO 4 2À , etc., opened new avenues in the fields of solid-state lighting, displays, lasers, sensors, and bio-medical imaging, among others. [1][2][3][4][5] The above-mentioned groups show broadband emission in the visible region due to O 2À -M x+ (M x+ = Ti 4+ , V 5+ , Nb 5+ , Ta 5+ , W 6+ , and Mo 6+ ) charge transfer bands that are associated with the respective metal-oxygen polyhedra. 6,12,32 These groups show negligible overlapping of their broadband absorption and emission in the visible region due to the minor visible photon reabsorption.…”