Nd3+ emissions in transparent ferroelectric ceramic hosts under ultraviolet excitation

Correr, G.I.; Badillo, Fernando Andrés Londoño; Botero, Ériton Rodrigo; Milton, Flávio Paulo; Garcia, D.; Godoy, Marcio Peron Franco de

doi:10.1016/j.ceramint.2022.01.212

Cited by 4 publications

(4 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PL spectra of NdOCl, EuOCl, ErOCl, and EuOBr are shown in Figure S18, and the corresponding energy level transitions of Nd 3+ , Eu 3+ , Er 3+ are depicted in Figure S19. 14,71,72 These lateral heterostructures with different RE metals offer exciting opportunities to investigate the full potential of these materials.…”

Section: Resultsmentioning

confidence: 99%

“…EuOCl and NdOCl were chosen for the growth of heterostructures because the strong PL emissions facilitate the convenient identification by PL mapping. The PL spectra of NdOCl, EuOCl, ErOCl, and EuOBr are shown in Figure S18, and the corresponding energy level transitions of Nd 3+ , Eu 3+ , Er 3+ are depicted in Figure S19. ,, These lateral heterostructures with different RE metals offer exciting opportunities to investigate the full potential of these materials.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

General Approach for Two-Dimensional Rare-Earth Oxyhalides with High Gate Dielectric Performance

et al. 2023

View full text Add to dashboard Cite

Two-dimensional (2D) rare-earth oxyhalides (REOXs) with novel properties offer fascinating opportunities for fundamental research and applications. The preparation of 2D REOX nanoflakes and heterostructures is crucial for revealing their intrinsic properties and realizing high-performance devices. However, it is still a great challenge to fabricate 2D REOX using a general approach. Herein, we design a facile strategy to prepare 2D LnOCl (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy) nanoflakes using the molten salt method assisted by the substrate. A dual-driving mechanism was proposed in which the lateral growth could be guaranteed by the quasi-layered structure of LnOCl and the interaction between the nanoflakes and the substrate. Furthermore, this strategy has also been successfully applied for block-by-block epitaxial growth of diverse lateral heterostructures and superlattice. More significantly, the high performance of MoS2 field-effect transistors with LaOCl nanoflake as the gate dielectric was demonstrated, exhibiting competitive device characteristics of high on/off ratios up to 107 and low subthreshold swings down to 77.1 mV dec–1. This work offers a deep understanding of the growth of 2D REOX and heterostructures, shedding new light on the potential applications in future electronic devices.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

General Approach for Two-Dimensional Rare-Earth Oxyhalides with High Gate Dielectric Performance

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The quenching of PL as a function of temperature was analyzed via the evaluation of integrated areas. Figure 7 shows the intensity of bands 1, 2, and 3 and NBE as a function of 1/k B T, which can be modeled using an Arrhenius-like expression for dual channel recombination, as in [44]:…”

Section: Optical Characterizationmentioning

confidence: 99%

“…where I 0 is the intensity at T = 0 K, ε ai is the activation energy of channel I associated to PL quenching, and γ i is the correspondent ratio between radiative and non-radiative carrier lifetimes. A channel with large ε a indicates the need for higher temperatures to activate a non-radiative process, i.e., to quench PL emission [44]. In Figure 7a, the NBE band exhibits two activation energies, 57 ± 3 meV and 13 ± 2 meV, which are attributed to the free exciton (X A ) and the exciton bound to a neutral donor (D 0 X), respectively [38,39].…”

Section: Optical Characterizationmentioning

confidence: 99%

Exploring Na Doping in ZnO Thin Films: Electrical and Optical Insights

Silva,

Vargas,

Peres

et al. 2024

Coatings

Self Cite

View full text Add to dashboard Cite

Strategies to achieve p-type behavior in semiconductor oxides are an important current topic of research. Our study showed that sodium-doped zinc oxide thin films are a plausible approach. The insertion of dopant allowed a transition between n-type p-type electrical behavior in specific temperature ranges around 300 K. Annealing procedures under controlled atmospheres, including Ar, N2, and O2, increased the hole density up to a magnitude of 1016 cm−3, although this also reduced the window temperature. The micro-photoluminescence spectra showed an enhancement of defect-related emissions as the dopant content increased. Notably, yellow-green emissions (around 2.38 eV–520 nm) were the most prominent in the as-grown samples. After annealing, a strong redshift of the defect band was observed (around 1.85 eV–670 nm). Our findings showed that p-type ZnO:Na films exhibited emissions associated with RGB primary colors. In a chromaticity diagram, as-grown samples appeared near the white range, annealed films were close to the warm white area, and O2 annealed films trended within the red range.

show abstract

A review on photoluminescence phosphors for biomedical, temperature sensing, photovoltaic cell, anti-counterfeiting and white LED applications

Kaur,

Rao

et al. 2024

Physica B: Condensed Matter

View full text Add to dashboard Cite

Nd3+ emissions in transparent ferroelectric ceramic hosts under ultraviolet excitation

Cited by 4 publications

References 36 publications

General Approach for Two-Dimensional Rare-Earth Oxyhalides with High Gate Dielectric Performance

General Approach for Two-Dimensional Rare-Earth Oxyhalides with High Gate Dielectric Performance

Exploring Na Doping in ZnO Thin Films: Electrical and Optical Insights

A review on photoluminescence phosphors for biomedical, temperature sensing, photovoltaic cell, anti-counterfeiting and white LED applications

Contact Info

Product

Resources

About