Down and upconversion luminescence in Pr3+/Yb3+-codoped α-NaYF4 nanocrystals

被引：0

作者：

Cheroura, Y. ^{[2
]}

Smara, Z. ^{[2
]}

Boyer, D. ^{[1
]}

Potdevin, A. ^{[1
]}

Chafa, A. ^{[3
]}

Ziane, O. ^{[2
]}

Mahiou, R. ^{[1
]}

机构：

[1] Univ Clermont Auvergne, Inst Chim Clermont Ferrand, Sigma Clermont, UMR 6296,CNRS,UCA, Campus Cezeaux,TSA 60026 CS 60026, F-63000 Clermont Ferrand, France

[2] USTHB, Lab Elect Quant, Fac Phys, Algiers 16111, Algeria

[3] USTHB, Fac Phys, Lab Sci Nucl & Interact Rayonnement Matiere, Algiers 16111, Algeria

来源：

OPTICAL MATERIALS | 2025年 / 165卷

关键词：

Nanoparticles; Fluorides; Luminescence; Down-conversion; Up-conversion; ENERGY-TRANSFER; ETHYLENE-GLYCOL; NANOPARTICLES; EMISSION; PR3+; SIZE; YB3+; PHASE; STATE; IONS;

D O I：

10.1016/j.optmat.2025.117140

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cubic alpha-NaYF4 nanometer-sized crystals singly doped with Pr3+ and codoped with Pr3+ and 20 % Yb3+ were synthesized by an original coprecipitation route at 60 degrees C during 1 h. The obtained nanoparticles exhibited primary particles showing cubic shape with mean sizes around similar to 49 nm. Down and up-conversion mechanisms were studied versus the Pr3+ concentration in singly Pr3+ doped and Pr3+, Yb3+ codoped materials. Blue/red and NIR excited emission spectra as well as kinetics of both P-3(0) and D-1(2) levels of Pr3+ have been studied qualitatively. DC and UC were evidenced indicating that Pr3+ -> Pr3+ and Pr3+ -> Yb3+ energy transfers occur, which are strongly dependent on the Pr3+ concentration. The obtained results indicate that both Pr3+ and Yb3+ play the role of sensitizer or acceptor, leading to the modification of the DC/UC efficiency ratio due to a feedback energy transfer. Such assumption is discussed in the frame of three levels system. It gives insights into factors involved in the concentration quenching in both DC and UC materials based on the Pr3+/Yb3+ pairs.

引用

页数：9

共 43 条

[41] Use of colloidal upconversion nanocrystals for energy relay solar cell light harvesting in the near-infrared region [J].

Yuan, Chunze ;

Chen, Guanying ;

Prasad, Paras N. ;

Ohulchanskyy, Tymish Y. ;

Ning, Zhijun ;

Tian, Haining ;

Sun, Licheng ;

Agren, Hans .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (33) :16709-16713

[42] Femtosecond pulsed laser induced synthesis of ultrafine Y2O3: Pr, Yb nanoparticles with improved upconversion efficiency [J].

Zheng, C. B. ;

Xia, Y. Q. ;

Qin, F. ;

Yu, Y. ;

Miao, J. P. ;

Zhang, Z. G. ;

Cao, W. W. .

CHEMICAL PHYSICS LETTERS, 2010, 496 (4-6) :316-320

[43] Broadband dye-sensitized upconversion of near-infrared light [J].

Zou, Wenqiang ;

Visser, Cindy ;

Maduro, Jeremio A. ;

Pshenichnikov, Maxim S. ;

Hummelen, Jan C. .

NATURE PHOTONICS, 2012, 6 (08) :560-564

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