A5067228665- ZnO doping and properties
- Plasmonic and Surface Plasmon Research
- Optical Coatings and Gratings
- Thermal Radiation and Cooling Technologies
- Gold and Silver Nanoparticles Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
- Quantum Dots Synthesis And Properties
- Advanced Semiconductor Detectors and Materials
- Copper-based nanomaterials and applications
- GaN-based semiconductor devices and materials
- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
Universitat de València
2021-2024
Geociencias Barcelona
2023
Consejo Superior de Investigaciones Científicas
2023
Abstract Metal-oxides hold promise as superior plasmonic materials in the mid-infrared compared to metals, although their integration over established material technologies still remains challenging. We demonstrate localized surface plasmons self-assembled, hemispherical CdZnO metal-oxide nanoparticles on GaAs, a route enhance absorption photodetectors. In this system, two plasmon modes are identified at 5.3 and 2.7 μm, which yield an enhancement of light intensity underlying GaAs. case...
We present a temperature-dependent Raman scattering study of CdO in the temperature range between 80 and 500 K. Distinctive features second-order spectra are identified as overtones combination modes with help density functional perturbation theory calculations. A wide, broad band region 250 $470 {\mathrm{cm}}^{\ensuremath{-}1}$ is attributed to by charge-density fluctuations high-density overdamped electron gas sample. Very good agreement found expected arising from overtone states plasmon...
We present a Raman scattering study of rocksalt ${\mathrm{Cd}}_{1\ensuremath{-}x}{\mathrm{Zn}}_{x}\mathrm{O}$ alloys in the compositional range between $x=0$ and $x=0.1$. use sharp feature second-order spectra associated with transverse acoustic (TA) modes at $L$ point to monitor effect alloy disorder on phonon lifetime. The $2\mathrm{TA}(L)$ peak shows substantial broadening as Zn content is increased up 10%. rate increase significantly higher than that expected from cationic mass...
We show here that Cd(Zn)O can be deposited on GaAs by MOCVD forming nanoparticles with a hemispherical shape. These maintain the key characteristics from CdO film: very high plasma frequency and low losses, hence retaining strong plasmonic character. As result of this, when illuminated infrared light, two localized surface plasmon (LSP) modes are excited at 2.7 5.3 microns, electric field is heavily amplified in underlying substrate. Moreover, their geometry allows them to partially change...
Metal-oxides are known to be ideal alternatives noble metals for mid-IR plasmonics, but they typically grown on substrates as sapphire or glass, which cannot used active materials in electronic devices. We demonstrate here that thin Cd(Zn)O films can integrated GaAs, one of the dominant optoelectronic material platforms mid-IR. is likely best plasmonic this region spectrum, and we show when deposited GaAs it yields polycrystalline support surface plasmon polaritons (SPPs). As a result...
With this work we seek to cover a key space in the study of new materials for IR plasmonics: their integration on functional substrates. We show that Cd(Zn)O, promising semiconductor oxide characterized by its low losses, can be grown polycrystalline form GaAs substrate. Despite polycrystallinity, plasmonic response described based physics homogeneous thin layer. study, validate Cd(Zn)O future integrated systems GaAsbased photonic devices.
Metal-oxides are known to be ideal alternatives noble metals for mid-IR plasmonics, but they typically grown on substrates as sapphire or glass, which cannot used active materials in electronic devices. We demonstrate here that thin Cd(Zn)O films can integrated GaAs, one of the dominant optoelectronic material platforms mid-IR. is likely best plasmonic this region spectrum, and we show when deposited GaAs it yields polycrystalline support surface plasmon polaritons (SPPs). As a result...