Recent advances and prospects of persistent luminescent materials as inner secondary self-luminous light source for photocatalytic applications

Abstract

 Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

Luminescence in external dopant-free scandium-phosphorus vanadate solid solution: a spectroscopic and theoretical investigation

“…81 However, this situation is reasonable and can be understandable because the Sc(P x ,V 1Àx )O 4 solid solutions belong to the family of selfactivated phosphors whose luminescence is mainly due to the existence of complex groups and/or defects. 82 As a result, in most cases, the self-activated phosphors usually can only show QE values less than 50%, such as those summarized by Dang et al, 83 Huang et al, 84 and Zhou et al, 85 83 and those summarized by Huang et al, 84 and Zhou et al 85 Looking into the IQE and/or EQE values we obtained, it is obvious that some of them, typically for the Sc(P 0.3 ,V 0.7 )O 4 sample, are comparable to and can even be higher than those of many reported self-activated phosphors and some other RE/non-RE doped crystals, such as ScVO 4 :0.02Bi 3+ (l ex = 330 nm xenon lamp, EQE = 35%), 25 CsPbCl 3 (l ex = 360 nm xenon lamp, QY = 26.0 AE 0.3%), 90 Cs x K 1Àx PbCl 3 :Eu 3+ (l ex = 365 nm xenon lamp, EQE = 31.2%), 91 and CsPbCl 3 :Mn 2+ (l ex = 360 nm xenon lamp, QY = 27%). 92 Moreover, the improved thermal stability (T 50% ) of 480.15 K and/ or activation energies (DE a ) of 0.51 eV for the Sc(P 0.4 ,V 0.6 )O 4 solutions are also higher than or comparable to those of some RE/non-RE doped phosphors, for example, La 2 MgTiO 6 :0.005Bi 3+ (l ex = 350 nm xenon lamp, T 50% = B175 1C, DE a = 0.27 eV), 4 La 2 MgTiO 6 :0.005Bi 3+ (l ex = 410 nm xenon lamp, T 50% = B250 1C, DE a = 0.252 eV), 6 CaSc 2 O 4 :Ce 3+ (l ex = 437 nm, T 50% = B225 1C, DE a = 0.195 eV), 60 (DE a = 0.469 eV, T 50% = B60 1C), 94 CsVO 3 (DE a = 0.31 eV).…”

Microwave-Assisted Preparation of Luminescent Inorganic Materials: A Fast Route to Light Conversion and Storage Phosphors

“…However, other examples can be easily found in trivalent rare earths, Eu 3+ , Tb 3+ , Pr 3+ , Dy 3+ , and d-metals (Mn 4+ ) doped materials [5,7,[41][42][43][44]. PeL materials are in evidence nowadays due to vast and unexplored bioimaging applications [37], theranostics [45], and photocatalysis [46]. When it comes to application, persistent phosphors must have high quantum yield and high storage capacity [47,48].…”

Synthesis, luminescence and persistent luminescence of europium-doped strontium aluminates

“…The persistent afterglow of Sr4Al14O25:Eu 2+ can be used to reduce the flicker for white LED's [20]. Composite materials including strontium aluminate persistent phosphors can be applied as photocatalysts [21][22][23][24], improve solar cell performance [25,26], anticounterfeiting [27], fingerprint detection [28,29], or oxygen sensing [30]. The use of persistent strontium aluminates as road markings for improved safety has also been addressed [31,32].…”