Cooperative emission study in ytterbium-doped Y2SiO5

Denoyer, A; Lévesque, Y.; Jandl, S.; Goldner, Ph.; Guillot-Noël, O.; Viana, Bruno; Thibault, Florent; Pelenc, D.

doi:10.1016/j.jlumin.2008.01.009

Cited by 26 publications

(12 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This suggests the Yb 3+ state is relatively preserved compared to that of the pristine Yb(fod) 3 compound in solution, a highly disordered local environment. In addition, the PL peak of the a-C(Yb) samples is wider than those of other Yb doped ceramic and oxide based hosts [ 13 , 25 , 46 , 47 ]. This suggests the Yb 3+ ion possesses a variety of local bonding environments in the a-C matrix, which will be discussed further in the X-ray photoelectron spectroscopy (XPS) analyses in Section 2.4 .…”

Section: Resultsmentioning

confidence: 99%

Reduction of Photoluminescence Quenching by Deuteration of Ytterbium-Doped Amorphous Carbon-Based Photonic Materials

et al. 2014

View full text Add to dashboard Cite

Abstract:In situ Yb-doped amorphous carbon thin films were grown on Si substrates at low temperatures (<200 °C) by a simple one-step RF-PEMOCVD system as a potential photonic material for direct integration with Si CMOS back end-of-line processing. Room temperature photoluminescence around 1 µm was observed via direct incorporation of optically active Yb 3+ ions from the selected Yb(fod) 3 metal-organic compound. The partially fluorinated Yb(fod) 3 compound assists the suppression of photoluminescence quenching by substitution of C-H with C-F bonds. A four-fold enhancement of Yb photoluminescence was demonstrated via deuteration of the a-C host. The substrate temperature greatly influences the relative deposition rate of the plasma dissociated metal-organic species, and hence the concentration of the various elements. Yb and F incorporation are promoted at lower substrate temperatures, and suppressed at higher substrate temperatures. O concentration is slightly elevated at higher substrate temperatures. OPEN ACCESSMaterials 2014, 7 5644Photoluminescence was limited by the concentration of Yb within the film, the concentration of Yb ions in the +3 state, and the relative amount of quenching due to the various de-excitation pathways associated with the vibrational modes of the host a-C network. The observed wide full-width-at-half-maximum photoluminescence signal is a result of the variety of local bonding environments due to the a-C matrix, and the bonding of the Yb 3+ ions to O and/or F ions as observed in the X-ray photoelectron spectroscopy analyses.

show abstract

Section: Resultsmentioning

confidence: 99%

Reduction of Photoluminescence Quenching by Deuteration of Ytterbium-Doped Amorphous Carbon-Based Photonic Materials

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Single crystals of NdVO 4 doped with Yb (Yb x Nd 1 À x VO 4 where x ¼1%, 5%, 10% and 15%) were prepared by the flux growth method as described in Ref. [14,9] and transparent crystals with an average size of 3 Â 2 Â 1 mm 3 elongated in the direction of the crystallographic c axis of the tetragonal structure were obtained.…”

Section: Methodsmentioning

confidence: 99%

“…However for close enough ions, Yb 3 + -Yb 3 + pair CF degeneracies are lifted under magnetic interactions, and additional CF excitations are observed [8]. Such interacting pairs play a major role in energy transfer and cooperative emission [9]. Strongly dependent on pair distances and bondings, either forced dipole-dipole and dipole-quadrupole [10,11] or super exchange mechanisms are expected to prevail [12].…”

Section: Introductionmentioning

confidence: 99%

Cooperative emission study in ytterbium doped NdVO4

Lévesque

Jandl

Bettinelli

2011

Journal of Luminescence

Self Cite

View full text Add to dashboard Cite

“…However, for a long time the study of UC on Y 2 SiO 5 were merely restricted to X2 phase. [12][13][14] Previously, we synthesized and investigated UC luminesence of X2-Y 2 SiO 5 :Yb 3+ , Er 3+ , Tm 3+ samples. 15 In this paper, we chose X1-Y 2 SiO 5 as host for UC.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Upconversion Luminescence of Y₂SiO₅:Yb³⁺, Ho³⁺ Nanophosphors

Guo

Wang²,

Peng³

2011

j nanosci nanotechnol

View full text Add to dashboard Cite

X1 type monoclinic Y2SiO5:Yb3+, Ho3+ nanophosphors with fixed (varied) Ho3+ and varied (fixed) Yb3+ concentrations were synthesized by sol-gel method. The nanophosphors presented lacunaris shape with an average size of about 47 nm measured by transmission electron microscopy and scanning electron microscopy. Up-conversion emissions have been observed at 550 nm corresponding to (5F4, 5S2)-5I8 transition and 661 nm due to 5F5-5I8 transition of Ho3+ upon 980 nm excitation at room temperature. The results indicate that both green and red luminescences are based on the two-photon process through the energy transfer from Yb3+. However, the intensity of green emission is weaker than that of the red, because the 5I7 level of Ho3+ can be effectively populated. The integrated upconversion emission intensity on the Yb3+ and Ho3+ concentrations were also studied.

show abstract

Cooperative emission study in ytterbium-doped Y2SiO5

Cited by 26 publications

References 25 publications

Reduction of Photoluminescence Quenching by Deuteration of Ytterbium-Doped Amorphous Carbon-Based Photonic Materials

Reduction of Photoluminescence Quenching by Deuteration of Ytterbium-Doped Amorphous Carbon-Based Photonic Materials

Cooperative emission study in ytterbium doped NdVO4

Preparation and Upconversion Luminescence of Y₂SiO₅:Yb³⁺, Ho³⁺ Nanophosphors

Contact Info

Product

Resources

About

Cooperative emission study in ytterbium-doped Y2SiO5

Cited by 26 publications

References 25 publications

Reduction of Photoluminescence Quenching by Deuteration of Ytterbium-Doped Amorphous Carbon-Based Photonic Materials

Reduction of Photoluminescence Quenching by Deuteration of Ytterbium-Doped Amorphous Carbon-Based Photonic Materials

Cooperative emission study in ytterbium doped NdVO4

Preparation and Upconversion Luminescence of Y2SiO5:Yb3+, Ho3+ Nanophosphors

Contact Info

Product

Resources

About

Preparation and Upconversion Luminescence of Y₂SiO₅:Yb³⁺, Ho³⁺ Nanophosphors