UV–VUV-excited photoluminescence of Tm3+ substituted β-rhenanite as a blue-emitting phosphor

Luminescence properties of Ca10K(PO4)7:RE3+ (RE=Ce, Tb, Dy, Tm and Sm) under vacuum ultraviolet excitation

“…Upon 172 nm excitation, the predominant emission peak is located at 453 nm, attributed to the 1 D 2 -3 F 4 transition of Tm 3+ [24]. Besides, there is a weak emission at about 478 nm, and it could be ascribed to the 1 G 4 -3 H 6 transition of Tm 3+ [24]. As a whole, the brightness of CKP:Tm 3+ is somewhat low.…”

“…In the UV region, there are a group of excitation peaks existing between 260 and 300 nm that can be assigned to the 3 H 6 -3 P J (J = 2, 1, 0) transitions [24]. Upon 172 nm excitation, the predominant emission peak is located at 453 nm, attributed to the 1 D 2 -3 F 4 transition of Tm 3+ [24]. Besides, there is a weak emission at about 478 nm, and it could be ascribed to the 1 G 4 -3 H 6 transition of Tm 3+ [24].…”

A Single‐Phase Phosphor NaLa9 (GeO4)6O2: Tm3+, Dy3+ for Near Ultraviolet‐White LED and Field‐Emission Display

“…On the other hand, phosphors activated with Dy 3+ mainly produce two emissions, the blue one ( 4 F 9/2 – 6 H 13/2 ) and the yellow one ( 4 F 9/2 – 6 H 15/2 ), are used to compound white light . Tm 3+ ion always emits blue light when doped into a matrix due to its 1 D 2 – 3 F 4 or 1 G 4 – 3 H 6 transition depending on the host environment. Thus, tunable white light can be realized by codoping Dy 3+ with Tm 3+ .…”

Enhanced Photoluminescent Properties and Crystalline Morphology of LiBaPO4:Tm3+ Phosphor through Microwave Sintering Method

“…Phosphates with a general formula like ABPO 4 , where A is a mono-valent cation and B is a divalent cation, are interesting because of their optical, ferroelectric properties, excellent thermal and hydrolytic stability [ 2 , 3 , 4 , 5 , 6 , 7 ]. Therefore, many studies have concentrated on ABPO 4 phosphate by solid-state reaction for WLEDs [ 2 , 3 , 4 , 5 , 6 , 7 ]. Among them, Tm 3+ -doped materials have been widely adopted as blue emitting phosphors because of their intense 1 D 2 → 3 F 4 emission.…”

“…Among them, Tm 3+ -doped materials have been widely adopted as blue emitting phosphors because of their intense 1 D 2 → 3 F 4 emission. The investigation from Li et al has shown that Tm 3+ -doped NaCaPO 4 phosphor exhibits relatively strong absorption in near-UV region of 356 nm and intense blue emission of 451 nm with excellent color purity [ 7 ].…”