Preparation of thin films of perovskite-type YAlO 3 :Gd 3+ –Pr 3+ UV phosphors

Shimizu, Yoshiaki; Ueda, Kazushige; Massuyeau, Florian; Jobic, Stéphane

doi:10.1016/j.tsf.2014.09.075

Cited by 12 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Intense visible luminescence was observed in perovskite-type stannates and zirconates [9,10], while intense UV luminescence was observed in perovskite-type alminates such as YAlO 3 :Gd 3 þ and YAlO 3 :Gd 3 þ -Pr 3 þ [11,12]. To understand the mechanisms of the luminescence, analysis of Ln 3 þ 4f energy levels in some perovskite-type oxides will be essential.…”

Section: Introductionmentioning

confidence: 99%

Lanthanide 4f energy levels in perovskite-type YAlO3

Shimizu

Ueda

2015

Journal of Luminescence

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Lanthanide 4f energy levels in perovskite-type YAlO3

Shimizu

Ueda

2015

Journal of Luminescence

Self Cite

View full text Add to dashboard Cite

“…with the 6 P 7/2 → 8 S 7/2 4f-4f transition. In several inorganic rare-earth (RE) compounds doped with both Gd 3+ and Pr 3+ ions, including REPO 4 [4][5][6][7][8], BaRE 4 Si 5 O 17 [9], RE 3 Al 5 O 12 [10], REBO 3 [11,12], Ca 3 RE 3 (BO 3 ) 5 [12], REF 3 [13], and REAlO 3 [14,15], photoexcitation into the 4f-5d transition of Pr 3+ ions results in an efficient photosensitisation of the UVB PL band of Gd 3+ ions.…”

Section: Introductionmentioning

confidence: 99%

Temperature dependence of narrow-band UVB photoluminescence of silica–(Gd,Pr)PO₄ transparent glass-ceramic phosphors

Kajihara,

Nakagawa,

Nakagawa

et al. 2023

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The effect of temperature on photoluminescence (PL) due to the 6P j → 8S7/2 (j = 5/2, 7/2) transitions of Gd3+ ions was examined between 200 and 500 K for a sol–gel-derived silica–(Gd,Pr)PO4 transparent glass-ceramic phosphor with negligible concentration quenching under excitation into the 5d–4f transition of Pr3+ ions at 220 nm. The intensity of the narrow-band ultraviolet B (UVB) PL at ∼313 nm associated with the 6P7/2 → 8S7/2 transition slightly increased between 200 and 300 K, but was decreased to ∼86% and ∼62% of that at 300 K when temperature was raised to 400 and 500 K, respectively. The observed magnitude of the thermal quenching of the UVB PL intensity was agreed well with that recorded in a prototype narrow-band UVB lamp consisting of another silica–(Gd,Pr)PO4 transparent glass-ceramic window and a KrCl excimer lamp as a light source at 222 nm. The silica–(Gd,Pr)PO4 transparent glass-ceramics was more resistant to the thermal quenching of the narrow-band UVB PL than a conventional powder phosphor, probably because of the encapsulation of (Gd,Pr)PO4 nanocrystals with low quenching centre concentrations in inert silica glass matrix.

show abstract

“…The PL of Gd 3+ doped YAlO 3 was recently examined and Pr 3+ co‐doping was found to enhance the UV PL of Gd 3+ . To develop surface emitting devices or other optoelectronic application, the examinations of cathodoluminescence (CL), as well as PL, of the Gd 3+ doped YAlO 3 phosphors are important.…”

Section: Introductionmentioning

confidence: 99%

UV cathodoluminescence of Gd³⁺doped and Gd³⁺Pr³⁺co-doped YAlO₃epitaxial thin films

Shimizu

Ueda

Takashima

et al. 2015

Phys. Status Solidi A

Self Cite

View full text Add to dashboard Cite

film. The PL excitation spectrum of YAlO 3 :Gd 3þ in vacuum UV region revealed the presence of an intense excitation band at 155 nm assignable to YAlO 3 host absorption. This observation implied that the energy of accelerated electrons was absorbed by the host and then transferred to Gd 3þ . Pr 3þ co-doping was found to weaken the Gd 3þ emission in CL because the excitation energy absorbed by the host was transferred to not only Gd 3þ but also Pr 3þ accompanying visible emission and nonradiative transition in Pr 3þ .

show abstract

Preparation of thin films of perovskite-type YAlO 3 :Gd 3+ –Pr 3+ UV phosphors

Cited by 12 publications

References 51 publications

Lanthanide 4f energy levels in perovskite-type YAlO3

Lanthanide 4f energy levels in perovskite-type YAlO3

Temperature dependence of narrow-band UVB photoluminescence of silica–(Gd,Pr)PO₄ transparent glass-ceramic phosphors

UV cathodoluminescence of Gd³⁺doped and Gd³⁺Pr³⁺co-doped YAlO₃epitaxial thin films

Contact Info

Product

Resources

About

Preparation of thin films of perovskite-type YAlO 3 :Gd 3+ –Pr 3+ UV phosphors

Cited by 12 publications

References 51 publications

Lanthanide 4f energy levels in perovskite-type YAlO3

Lanthanide 4f energy levels in perovskite-type YAlO3

Temperature dependence of narrow-band UVB photoluminescence of silica–(Gd,Pr)PO4 transparent glass-ceramic phosphors

UV cathodoluminescence of Gd3+doped and Gd3+Pr3+co-doped YAlO3epitaxial thin films

Contact Info

Product

Resources

About

Temperature dependence of narrow-band UVB photoluminescence of silica–(Gd,Pr)PO₄ transparent glass-ceramic phosphors

UV cathodoluminescence of Gd³⁺doped and Gd³⁺Pr³⁺co-doped YAlO₃epitaxial thin films