Blue-yellow photoluminescence from Ce3+→Dy3+ energy transfer in HfO2:Ce3+:Dy3+ films deposited by ultrasonic spray pyrolysis

Martínez-Martínez, Rafael; Lira, A.; Speghini, Adolfo; Falcony, C.; Caldiño, U.

doi:10.1016/j.jallcom.2010.11.203

Cited by 27 publications

(9 citation statements)

References 28 publications

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“…It is worthy noting that the Ce 3+ ? Dy 3+ energy transfer efficiency up to 86 ± 3% has already been observed in Ce 3+ /Dy 3+ :HfO 2 films [38]. This direction deserves further investigation.…”

Section: Evaluation Of Yellow Laser Potentialmentioning

confidence: 59%

Spectroscopic assessment of Dy3+:LiLa(MoO4)2 crystal as an active medium for all-solid-state direct yellow-emitting lasers

Zhao

Zhou

Wei

et al. 2012

Journal of Alloys and Compounds

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Section: Evaluation Of Yellow Laser Potentialmentioning

confidence: 59%

Spectroscopic assessment of Dy3+:LiLa(MoO4)2 crystal as an active medium for all-solid-state direct yellow-emitting lasers

Zhao

Zhou

Wei

et al. 2012

Journal of Alloys and Compounds

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“…This fact indicates a more rapid decay of Dy 3+ ions with increasing Sm concentration which could be due to nonradiative transfer of energetic electrons from Dy 3+ to Sm 3+ active ions. Considering the existence of an energy exchange between Dy 3+ and Sm 3+ active ions, the efficiency of energy transfer (ET) is related to activator ion lifetime expressed as follows

{(normalET)}_{Dy \to Sm} = 1 - (τ_{normalDy}^{'} / τ_{normalDy})

where τ Dy ′ and τ Dy are lifetimes of sensitizer, i.e., Dy 3+ ions in presence and absence of Sm 3+ ions, respectively. The variation in calculated efficiency of energy transfer from Dy 3+ to Sm 3+ ions with increasing Sm concentration depicted in Figure S3b in the Supporting Information shows that (ET) Dy→Sm enhances with increasing Sm concentration.…”

Section: Resultsmentioning

confidence: 99%

Latent Fingerprint Imaging Using Dy and Sm Codoped HfO₂ Nanophosphors: Structure and Luminescence Properties

Sandeep

Bahadur

Rath

2019

Part & Part Syst Charact

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The development of latent fingerprints (LFPs) detected at the site of crime is considered as an imperative physical evidence in forensic investigations. Herein, a rapid and cost‐effective approach using nonhazardous Dy and Sm codoped HfO2 nanophosphors is demonstrated to be utilized for LFP imaging. Sol–gel method can produce Dy and Sm codoped HfO2 of monoclinic phase with crystallite size ranging from ≈10 to 25 nm. While selected area electron diffraction and lattice spacing calculated from high‐resolution transmission electron microscopy confirm monoclinic phase, Le‐Bail profile refinement of X‐ray diffraction (XRD) patterns demonstrate an exponential increase in lattice volume with incorporating various concentrations of Dy and Sm in HfO2 lattice. Exciting Dy and Sm codoped HfO2 with 393 nm photoluminescence spectra show emissions in blue, yellow, and near red regions emerging primarily due to energy transfer from Dy3+ to Sm3+ through multipolar interaction suggested by time resolved decay spectra. Combining excitation and emission spectra, an energy band diagram is proposed. Owing to excellent emissions, Dy and Sm codoped HfO2 are explored for LFP imaging with good selectivity and resolution over multivariate surfaces like float glass and aluminum foil. The third‐level details like enclosure and termination–bifurcation are extracted due to nanosized nature of particles.

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“…An investigation on the luminescent properties of HfO 2 films co-doped with Ce 3+ and several concentrations of Dy 3+ was presented in 2011 [90]. The deposition temperature was 300 °C.…”

Section: Luminescent Materialsmentioning

confidence: 99%

Spray Pyrolysis Technique; High-K Dielectric Films and Luminescent Materials: A Review

2018

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The spray pyrolysis technique has been extensively used to synthesize materials for a wide variety of applications such as micro and sub-micrometer dimension MOSFET´s for integrated circuits technology, light emitting devices for displays, and solid-state lighting, planar waveguides and other multilayer structure devices for photonics. This technique is an atmospheric pressure chemical synthesis of materials, in which a precursor solution of chemical compounds in the proper solvent is sprayed and converted into powders or films through a pyrolysis process. The most common ways to generate the aerosol for the spraying process are by pneumatic and ultrasonic systems. The synthesis parameters are usually optimized for the materials optical, structural, electric and mechanical characteristics required. There are several reviews of the research efforts in which spray pyrolysis and the processes involved have been described in detail. This review is intended to focus on research work developed with this technique in relation to high-K dielectric and luminescent materials in the form of coatings and powders as well as multiple layered structures.

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Blue-yellow photoluminescence from Ce3+→Dy3+ energy transfer in HfO2:Ce3+:Dy3+ films deposited by ultrasonic spray pyrolysis

Cited by 27 publications

References 28 publications

Spectroscopic assessment of Dy3+:LiLa(MoO4)2 crystal as an active medium for all-solid-state direct yellow-emitting lasers

Spectroscopic assessment of Dy3+:LiLa(MoO4)2 crystal as an active medium for all-solid-state direct yellow-emitting lasers

Latent Fingerprint Imaging Using Dy and Sm Codoped HfO₂ Nanophosphors: Structure and Luminescence Properties

Spray Pyrolysis Technique; High-K Dielectric Films and Luminescent Materials: A Review

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Blue-yellow photoluminescence from Ce3+→Dy3+ energy transfer in HfO2:Ce3+:Dy3+ films deposited by ultrasonic spray pyrolysis

Cited by 27 publications

References 28 publications

Spectroscopic assessment of Dy3+:LiLa(MoO4)2 crystal as an active medium for all-solid-state direct yellow-emitting lasers

Spectroscopic assessment of Dy3+:LiLa(MoO4)2 crystal as an active medium for all-solid-state direct yellow-emitting lasers

Latent Fingerprint Imaging Using Dy and Sm Codoped HfO2 Nanophosphors: Structure and Luminescence Properties

Spray Pyrolysis Technique; High-K Dielectric Films and Luminescent Materials: A Review

Contact Info

Product

Resources

About

Latent Fingerprint Imaging Using Dy and Sm Codoped HfO₂ Nanophosphors: Structure and Luminescence Properties