First Observation of Quantum Splitting Behavior in Nanocrystalline SrAl12O19:Pr, Mg Phosphor

2005 ◽  
Vol 17 (12) ◽  
pp. 3108-3113 ◽  
Author(s):  
Sergio M. Loureiro ◽  
Anant Setlur ◽  
William Heward ◽  
Seth T. Taylor ◽  
Holly Comanzo ◽  
...  
Keyword(s):  
Quantum Splitting

scholarly journals A sequential two-step near-infrared quantum splitting in Ho3+ singly doped NaYF4

AIP Advances ◽  
2011 ◽  
Vol 1 (4) ◽  
pp. 042161 ◽  
Author(s):  
D. C. Yu ◽  
X. Y. Huang ◽  
S. Ye ◽  
Q. Y. Zhang ◽  
J. Wang
Keyword(s):  
Near Infrared ◽  
Quantum Splitting

Invariance of quantum rings under ordinary flops III: A quantum splitting principle

2016 ◽  
Vol 4 (3) ◽  
pp. 333-401 ◽  
Author(s):  
Yuan-Pin Lee ◽  
Hui-Wen Lin ◽  
Feng Qu ◽  
Chin-Lung Wang
Keyword(s):  
Quantum Rings ◽  
Quantum Splitting

scholarly journals Near-infrared quantum splitting in Ho^3+:LaF_3 nanocrystals embedded germanate glass ceramic

2012 ◽  
Vol 2 (5) ◽  
pp. 636 ◽  
Author(s):  
W. J. Zhang ◽  
D. C. Yu ◽  
J. P. Zhang ◽  
Q. Qian ◽  
S. H. Xu ◽  
...  
Keyword(s):  
Glass Ceramic ◽  
Near Infrared ◽  
Germanate Glass ◽  
Quantum Splitting

Quantum-Splitting Systems

Luminescence ◽  
2007 ◽  
pp. 75-103
Author(s):  
Alok M. Srivastava ◽  
Cees R. Ronda
Keyword(s):  
Quantum Splitting

Advances in the Development of Quantum Splitting Phosphors

2001 ◽  
Vol 667 ◽  
Author(s):  
A.A. Setlur ◽  
H.A. Comanzo ◽  
A.M. Srivastava ◽  
W.W. Beers ◽  
W. Jia ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Efficiency ◽  
Stokes Shift ◽  
Concentration Quenching ◽  
Time Resolved ◽  
Fluorescent Lamps ◽  
Emission Color ◽  
Quantum Splitting ◽  
Visible Photon ◽  
Maximum Quantum Efficiency

ABSTRACTQuantum splitting phosphors (QSPs) are phosphors that could convert VUV radiation into more than one visible photon. These phosphors have the potential to improve the efficacy of current Hg fluorescent lamps and/or Xe lamps by reducing the Stokes shift energy loss after VUV excitation (λexc=185 nm for Hg lamps or 147 nm and 172 nm for Xe lamps provided the emission color of the phosphor matches the eye sensitivity. The current technology in QSPs and their potential limitations will be discussed in this paper. At GE-CRD, we have discovered and developed QSPs that meet the requirements for use in current Hg based fluorescent lamps. The steady state and time resolved optical properties of one of these phosphors, SrAl12O19:Pr3+,Mg2+, has been measured to estimate the maximum quantum efficiency and onset of concentration quenching in this phosphor. The maximum quantum efficiency for SrAl12O19:Pr3+,Mg2+ has been calculated to be ∼125-135% for 185 nm excitation with an upper bound on the Pr3+ doping level of ∼1%.

scholarly journals Intense NIR emission in YVO4:Yb3+ thin films by atomic layer deposition

2017 ◽  
Vol 5 (33) ◽  
pp. 8572-8578 ◽  
Author(s):  
Michael N. Getz ◽  
Per-Anders Hansen ◽  
Øystein S. Fjellvåg ◽  
Mohammed A. K. Ahmed ◽  
Helmer Fjellvåg ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Layer Deposition ◽  
Nir Emission ◽  
Quantum Splitting ◽  
Splitting Process

Thin films of YVO4:Yb3+ exhibiting intense NIR emission have been deposited by atomic layer deposition. The NIR emission is attributed to a quantum splitting process that could be used to enhance the efficiency of solar cells.

scholarly journals Three-photon near-infrared quantum splitting in β-NaYF4:Ho3+

2011 ◽  
Vol 99 (16) ◽  
pp. 161904 ◽  
Author(s):  
D. C. Yu ◽  
X. Y. Huang ◽  
S. Ye ◽  
M. Y. Peng ◽  
Q. Y. Zhang ◽  
...  
Keyword(s):  
Near Infrared ◽  
Quantum Splitting

scholarly journals On a structure of the one-loop divergences in 4D harmonic superspace sigma-model

2022 ◽  
Vol 82 (1) ◽  
Author(s):  
I. L. Buchbinder ◽  
A. S. Budekhina ◽  
B. S. Merzlikin
Keyword(s):  
Effective Action ◽  
Sigma Model ◽  
Proper Time ◽  
Kähler Manifold ◽  
Quantum Structure ◽  
Harmonic Superspace ◽  
Component Structure ◽  
Covariant Derivatives ◽  
The One ◽  
Quantum Splitting

AbstractWe study the quantum structure of four-dimensional $${{\mathcal {N}}}=2$$ N = 2 superfield sigma-model formulated in harmonic superspace in terms of the omega-hypermultiplet superfield $$\omega $$ ω . The model is described by harmonic superfield sigma-model metric $$g_{ab}(\omega )$$ g ab ( ω ) and two potential-like superfields $$L^{++}_{a}(\omega )$$ L a + + ( ω ) and $$L^{(+4)}(\omega )$$ L ( + 4 ) ( ω ) . In bosonic component sector this model describes some hyper-Kähler manifold. The manifestly $${{\mathcal {N}}}=2$$ N = 2 supersymmetric covariant background-quantum splitting is constructed and the superfield proper-time technique is developed to calculate the one-loop effective action. The one-loop divergences of the superfield effective action are found for arbitrary $$g_{ab}(\omega ), L^{++}_{a}(\omega ), L^{(+4)}(\omega )$$ g ab ( ω ) , L a + + ( ω ) , L ( + 4 ) ( ω ) , where some specific analogy between the algebra of covariant derivatives in the sigma-model and the corresponding algebra in the $${{\mathcal {N}}}=2$$ N = 2 SYM theory is used. The component structure of divergences in the bosonic sector is discussed.

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