Photoluminescent characteristics of hafnium oxide layers activated with trivalent terbium (HfO<sub>2</sub>:Tb<sup>+3</sup>)

Guzmán‐Mendoza, J.; Albarrán-Arreguín, D.; Álvarez-Fragoso, O.; Álvarez-Pérez, Marco Antonio; Falcony, C.; Garcı́a-Hipólito, M.

doi:10.1080/10420150701482519

Cited by 7 publications

(2 citation statements)

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“…The blue emission in HfO 2 :Tb and HfO 2 :Eu nanotubes can also be attributed to the presence of defect states in HfO 2 . The green emission arises from the inner 4 f shell transitions of Tb 3+ ions, 27,28 and the red emission originates from the inner 4 f shell transitions of corresponding Eu 3+ ions incorporated inside the HfO 2 host matrix 29,30 . These RE 3+ emissions can be efficiently excited via the fundamental absorption of HfO 2 2,4 .…”

Section: Resultsmentioning

confidence: 99%

Synthesis and White Light Emission of Rare Earth‐Doped HfO₂ Nanotubes

Liu

Wang

et al. 2011

Journal of the American Ceramic Society

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Luminescent nanotubes based on rare earth (RE) (Eu, Tb)‐doped hafnia (HfO2) were prepared by radio frequency (RF) sputtering with electrospun polyvinylpyrolidone (PVP) nanofibers as templates. The nanotubes annealed at 500°C have a uniform structure with desired tubular morphologies. Various colors of photoluminescence (PL) could be easily obtained by tuning the concentrations of the RE ions in the HfO2 host. The Eu‐ and Tb‐codoped HfO2 (HfO2:Eu&Tb) nanotubes exhibited white light emissions under a 325 nm excitation. Good Commission International de I'Eclairage (CIE) coordinates (0.333, 0.323) and color temperature (Tc) (5465 K) were achieved in the HfO2:Eu&Tb nanotubes. Experimental evidence showed that the presence of blue emission originates from the defect states in HfO2 nanotubes, the green and the red emissions can be attributed to the inner 4f shell transitions of corresponding Tb3+ ions and Eu3+ ions in HfO2 shells, respectively. Compared with RE‐doped HfO2 films, the nanotube samples showed intense white light emissions, revealing that the HfO2:Eu&Tb nanotubes are an efficient white light‐emission material.

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Section: Resultsmentioning

confidence: 99%

Synthesis and White Light Emission of Rare Earth‐Doped HfO₂ Nanotubes

Liu

Wang

et al. 2011

Journal of the American Ceramic Society

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“…Also, in 2007, a work on PL properties of HfO 2 :Tb 3+ films was published [85]. The PL properties of these films were studied as a function of deposition temperature and Tb 3+ ions concentration.…”

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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Transparent and low surface roughness HfO2: Tb3+, Eu3+ luminescent thin films deposited by USP technique

Martínez-Merlin

Guzmán‐Mendoza

Garcı́a-Hipólito

et al. 2016

Ceramics International

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Photoluminescent characteristics of hafnium oxide layers activated with trivalent terbium (HfO₂:Tb⁺³)

Cited by 7 publications

References 1 publication

Synthesis and White Light Emission of Rare Earth‐Doped HfO₂ Nanotubes

Synthesis and White Light Emission of Rare Earth‐Doped HfO₂ Nanotubes

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

Transparent and low surface roughness HfO2: Tb3+, Eu3+ luminescent thin films deposited by USP technique

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Photoluminescent characteristics of hafnium oxide layers activated with trivalent terbium (HfO2:Tb+3)

Cited by 7 publications

References 1 publication

Synthesis and White Light Emission of Rare Earth‐Doped HfO2 Nanotubes

Synthesis and White Light Emission of Rare Earth‐Doped HfO2 Nanotubes

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

Transparent and low surface roughness HfO2: Tb3+, Eu3+ luminescent thin films deposited by USP technique

Contact Info

Product

Resources

About

Photoluminescent characteristics of hafnium oxide layers activated with trivalent terbium (HfO₂:Tb⁺³)

Synthesis and White Light Emission of Rare Earth‐Doped HfO₂ Nanotubes

Synthesis and White Light Emission of Rare Earth‐Doped HfO₂ Nanotubes