2012
DOI: 10.1111/j.1551-2916.2012.05306.x
|View full text |Cite
|
Sign up to set email alerts
|

Comparative Investigation of Green and Red Upconversion Luminescence in Er3+ Doped and Yb3+/Er3+ Codoped LaOCl

Abstract: Pure tetragonal LaOCl:Er 3+ and LaOCl:Yb 3+ /Er 3+ samples possessing upconversion (UC) luminescence behavior were synthesized using a simple solid-state reaction method and the structural properties were investigated using X-ray diffraction, crystal structure analysis, and SEM, respectively. The UC spectroscopic properties of Er 3+ doped and Yb 3+ /Er 3+ codoped LaOCl were studied in terms of UC emission spectra. The intense green and red emissions around 528, 550, and 662 nm corresponding to the 2 H 11/2 ?4I… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

0
24
0
1

Year Published

2013
2013
2022
2022

Publication Types

Select...
8
1

Relationship

0
9

Authors

Journals

citations
Cited by 58 publications
(25 citation statements)
references
References 21 publications
0
24
0
1
Order By: Relevance
“…From the above result, it has been proved that the green and red emissions The upconversion excitation processes can be composed by several well-known mechanisms: (1) ground state absorption (GSA); (2) excited state absorption (ESA), (3) energy transfer (ET), and (4) photon avalanche (PA). 39,40 We can immediately rule out PA as a mechanism of upconversion in Y 2 O 2 S:Er 3+ hollow nanofibers because no inflection point is observed in the power density study. The two-photon process in Y 2 O 2 S:Er 3+ hollow nanofibers may happen via the following GSA and ESA processes (Fig.…”
Section: Resultsmentioning
confidence: 94%
“…From the above result, it has been proved that the green and red emissions The upconversion excitation processes can be composed by several well-known mechanisms: (1) ground state absorption (GSA); (2) excited state absorption (ESA), (3) energy transfer (ET), and (4) photon avalanche (PA). 39,40 We can immediately rule out PA as a mechanism of upconversion in Y 2 O 2 S:Er 3+ hollow nanofibers because no inflection point is observed in the power density study. The two-photon process in Y 2 O 2 S:Er 3+ hollow nanofibers may happen via the following GSA and ESA processes (Fig.…”
Section: Resultsmentioning
confidence: 94%
“…In the spectra, two strong green emission bands centered at 532nm and 553nm and a weak red emission band centered at around 669nm are observed, which are assigned to the Er 3+ ion transitions of 4 20,35,37 The UC luminescence spectra of single Er 3+ doped and 0.03 Er 3+ /yYb 3+ (y=0-0.25) co-doped Gd 2 (WO 4 ) 3 under 980nm nearinfrared laser excitation are presented in Figure 6, and the inset shows the variation of the UC luminescent intensity at 532nm and 553nm on the Yb 3+ concentration increase. Similarly, when singly doped with Er 3+ ion, the UC spectrum includes very weak UC emission, because Er 3+ solely can hardly absorb the near-infrared excitation energy in the absence of sensitizer Yb 3+ ions.…”
Section: Figurementioning
confidence: 97%
“…[16][17][18][19] Of , and it can be easily substituted by Er 3+ and Yb 3+ . 20,21 Li et al 22 prepared Er 3+ /Yb 3+ codoped Gd 2 (WO 4 ) 3 via a co-precipitation method, and investigated pumping-route-dependent concentration quenching and temperature effect on the phosphors. Sun et al 23 prepared the Yb 3+ and Er 3+ co-doped Gd 2 (WO 4 ) 3 and Gd 2 WO 6 using coprecipitation method, and reported the up-converted emission differences between those two phosphors.…”
Section: Introductionmentioning
confidence: 99%
“…The structure of LaOI comprises distinct covalent (LaO) n n+ complex cation and I -anion layers. In this structure, the La 3+ ion is coordinated with four oxygens and five iodines forming a monocapped tetragonal antiprism arrangement with C 4v as the point symmetry of the La 3+ site [34]. Meanwhile, La 3+ ion has the largest ionic radius among the lanthanide ions, and it can be easily substituted by different Ln 3+ ions in the structure [35].…”
Section: Introductionmentioning
confidence: 97%