Crystal structure and optical performance analysis of a new type of persistent luminescence material with multi-functional application prospects

Ding, Songsong; Chen, Pohua; Guo, Haijie; Peng, Feng; Zhou, Yunpeng; Wang, Yuhua; Sun, Junliang

doi:10.1016/j.jechem.2021.12.047

Cited by 11 publications

(8 citation statements)

References 42 publications

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“…Similarly, the O 1s peak in Figure S13b, Supporting Information can be well fitted into three peaks, whose binding energy of ≈531.90 and ≈530.28 eV respectively belong to O 1 , O 2 atoms, and the highest one (≈533.42 eV) correspondingly owns the highest oxidation states can be considered as the non-bridge oxygen. [28] When Δ values enhance, the XPS peaks shift towards lower energy indicating the cationic ligands around each O 2− are lessened to varying degrees (reduction of the oxidation state of O elements), which is consistent with the reduction of the stoichiometric ratio of Sr 2+ . In this case, the lack of Sr, Li atoms will weaken the attraction to the surrounding oxygen atoms, resulting the growth of bond lengths of LiO and SrO, and decrease of the SiO bond lengths as mentioned above.…”

Section: Wwwadvopticalmatdesupporting

confidence: 62%

Local Structure and Self‐Defect Evolution under Nonstoichiometric Effect Unlock Zero‐Thermal‐Quenching

Wang

2023

Advanced Optical Materials

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chip + yellow phosphors, (b) NUV LED chip + red-green-blue (RGB) phosphors. However, the former type features a low color rendering index (Ra) and residual rich blue light, which is not suitable to meet the increasingly prominent demand for human-centric health lighting. [2] NUVactivated w-LED shows a preponderance, for the acquisition of high-quality white light through the combination of different phosphors, meanwhile, the blue light can be minimized.In addition, during the working process, the Ohm effect caused by the current will unavoidably increase the temperature, then the emission intensity of phosphors will drop, and Stokes shift will drift, which is so-called thermal quenching. [3] This effect seriously drags down the overall luminescent efficiency and the total life of the devices, as well as the imbalance of white light. Therefore, the development of phosphors with high brightness and thermal stability is still a key challenge.Very recently, researchers have made positive efforts to explore low thermal quenching phosphors and delved novel strategies which can be summarized as follows: i) defect level regulation: as the defect levels make the supplement with emission center during high-temperature emission. [4] Kim et al. obtained a blue emitting zero-thermal quenching phosphor Na 3 Sc 2 (PO4) 3 :Eu 2+ via its polymorphism transition (α−β−γ) and their defects correspondingly. [5] Wu et al. explored an antithermal quenching red emitting NaZn(PO 3 ) 3 :Mn 2+ and discovered the trap compensation effect during the self-reduction process. [6] However, one must concern about the lack of certain common principles and the uncertainty of traps in different hosts. ii) Structural modulation, which begins from the structure itself, searching or enhancing the rigidness of crystal structure to reduce thermally activated phonons-assisted non-radiative process under high temperature. [7] For instance, this is discovered in some UCr 4 C 4 type structures (e.g., RbLi(Li 3 SiO 4 ) 2 :Eu 2+ , NaK 2 Li(Li 3 SiO 4 ) 4 :Eu 2+ , NaK 7 (Li 3 SiO 4 ) 8 :Eu 2+ et al.), however, this is limited in its poor chemical stability. [8] iii) Surface and interface engineering, which is constructed by making phosphors into a core-shell structure or making phosphors-in-glass for higher chemical and thermal stability. Although effective, such as Ca 3 SiO 4 Cl 2 :Eu 2+ @SiO 2 , RbLi(Li 3 SiO 4 ) 2 :Eu 2+ @ Al 2 O 3 @ODTMS, the complexity, and extensibility of the process still limit practical production. [9] Therefore, newly efficient

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Section: Wwwadvopticalmatdesupporting

confidence: 62%

Local Structure and Self‐Defect Evolution under Nonstoichiometric Effect Unlock Zero‐Thermal‐Quenching

Wang

2023

Advanced Optical Materials

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“…4,5 Applied in coatings, inks and glass ceramics at first, PersL materials are now being used in fields including emergency escape, defence and military, information encryption and light storage as research develops. [6][7][8] In the current research studies, among PersL materials, which mainly emit short wavelength visible light, SrAl 2 O 4 :Eu 2+ ,Dy 3+ (green, 424 h), 9 CaAl 2 O 4 :Eu 2+ ,Nd 3+ (blue, 419 h) 10 and Y 2 O 2 S:Eu 3+ , Mg 2+ ,Ti 4+ (orange-red, 45 h) 11 are more mature. These three commercial phosphors can cause damage to human eyes because most of them are cool-coloured phosphors.…”

Section: Introductionmentioning

confidence: 79%

Enhancing the luminescence performance of Ca_2−xSr_xBO₃Cl:Eu²⁺,Dy³⁺ by substitution of Sr²⁺ for Ca²⁺

et al. 2022

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“…Photostimulated luminescence (PSL) is a phenomenon that uses low-energy light to stimulate materials excited by high-energy light to emit light. 42 It has been used in the latest technology for optical information storage. Similar to LPL, charge carriers are trapped by the traps of the PSL material; however, they cannot be activated at RT.…”

Section: Resultsmentioning

confidence: 99%

Co-doped long persistent luminescence materials LiSr₃SiO₄Cl₃:Eu²⁺,Ln³⁺ (Ln = Dy, Ho, Er): construction and verification of VRBE and HRBE scheme and their multifunctional applications

Lin¹,

Ming²,

zhenbin³

et al. 2023

Inorg. Chem. Front.

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Crystal structure and optical performance analysis of a new type of persistent luminescence material with multi-functional application prospects

Cited by 11 publications

References 42 publications

Local Structure and Self‐Defect Evolution under Nonstoichiometric Effect Unlock Zero‐Thermal‐Quenching

Local Structure and Self‐Defect Evolution under Nonstoichiometric Effect Unlock Zero‐Thermal‐Quenching

Enhancing the luminescence performance of Ca_2−xSr_xBO₃Cl:Eu²⁺,Dy³⁺ by substitution of Sr²⁺ for Ca²⁺

Co-doped long persistent luminescence materials LiSr₃SiO₄Cl₃:Eu²⁺,Ln³⁺ (Ln = Dy, Ho, Er): construction and verification of VRBE and HRBE scheme and their multifunctional applications

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Crystal structure and optical performance analysis of a new type of persistent luminescence material with multi-functional application prospects

Cited by 11 publications

References 42 publications

Local Structure and Self‐Defect Evolution under Nonstoichiometric Effect Unlock Zero‐Thermal‐Quenching

Local Structure and Self‐Defect Evolution under Nonstoichiometric Effect Unlock Zero‐Thermal‐Quenching

Enhancing the luminescence performance of Ca2−xSrxBO3Cl:Eu2+,Dy3+ by substitution of Sr2+ for Ca2+

Co-doped long persistent luminescence materials LiSr3SiO4Cl3:Eu2+,Ln3+ (Ln = Dy, Ho, Er): construction and verification of VRBE and HRBE scheme and their multifunctional applications

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Enhancing the luminescence performance of Ca_2−xSr_xBO₃Cl:Eu²⁺,Dy³⁺ by substitution of Sr²⁺ for Ca²⁺

Co-doped long persistent luminescence materials LiSr₃SiO₄Cl₃:Eu²⁺,Ln³⁺ (Ln = Dy, Ho, Er): construction and verification of VRBE and HRBE scheme and their multifunctional applications