A5076915416- Thermal Radiation and Cooling Technologies
- Building Energy and Comfort Optimization
- Thermal properties of materials
- Radiative Heat Transfer Studies
- Anodic Oxide Films and Nanostructures
- Ga2O3 and related materials
- Advanced Thermoelectric Materials and Devices
- GaN-based semiconductor devices and materials
- Transition Metal Oxide Nanomaterials
- Nanowire Synthesis and Applications
- Photonic Crystals and Applications
Institute of Micro and Nanotechnology
2023-2025
Universidad Autónoma de Madrid
2020-2025
The pursuit of efficient thermoelectric materials, particularly those composed low-toxicity and Earth-abundant elements, has intensified in recent years. This study introduces an approach to increase the properties CuNi alloys through synergistic application two nanostructuring techniques: incorporation saccharine into electrolyte achieve a crystallite size reduction 23-26 nm utilization three-dimensional (3D) anodic aluminum oxide (3D-AAO) templates fabricate nanowire networks. For...
Abstract All‐day passive daytime radiative coolers (PDRC) offer a promising solution for energy‐free cooling of buildings and devices. This study investigates the use various cellulose‐derivative networks to achieve optimal stable performance. These results showed that mixed cellulose ester network has maximum solar reflectance 97%. While acetate infrared emissivity 96% in atmospheric transparency window band, which is near‐perfect emitter, nitrocellulose shows highest temperature, with...
Passive radiative cooling technology has the potential to revolutionize way of buildings and devices, while also helping reduce carbon footprint energy consumption. Pioneer works involving anodic aluminum oxide (AAO) nanostructures showed controversial results. In this work, we clarify how morphological properties chemical structure AAO–Al samples affect their optical performance. Changes in thickness, interpore distance, porosity alumina layer, as well used counterions, significantly...
We investigate the photovoltaic performance of solar cells based on n-AlxIn1-xN (x = 0-0.56) p-Si (100) hetero-junctions deposited by radio frequency sputtering. The AlxIn1-xN layers own an optical bandgap absorption edge tuneable from 1.73 eV to 2.56 within Al content range. This increase results in more resistive (≈10-4-1 Ω·cm) while residual carrier concentration drops ~1021 ~1019 cm-3. As a result, top n-contact resistance varies ≈10-1 1 MΩ for InN Al0.56In0.44N-based devices,...
Passive daytime radiative cooling (PDRC) has emerged as a promising strategy to mitigate the increasing impact of heat waves. However, achieving effective PDRCs requires cost-effective, ecofriendly, and industrially scalable materials. In this study, we investigate potential anodic aluminum oxide (AAO) nanostructures coated with metals passive coolers. We explore effects different metallic coatings (Al Au) varying thicknesses (ranging from 20 100 nm) on performance AAO nanostructures. Our...
Abstract In the current scientific landscape, understanding of optical properties in mid‐infrared (mid‐IR) range (3–30 µm) is crucial simulations and models to explore potential materials for various applications. However, due challenges associated with mid‐IR characterization, accurate refractive index ( n ) extinction coefficient κ data are often lacking literature. This study addresses this gap by investigating spectra anodic aluminum oxide (AAO) nanostructures anodized under different...
Passive daytime radiative cooling (PDRC) is a promising strategy to cope with the increasing heat waves. However, it requires cost-effective, eco-friendly, and industrial scalable materials. In this work, potential of anodic aluminium oxide (AAO) nanostructures as passive coolers when coated metals explored. The effects different metallic coatings (Al Au) varying thicknesses (20 nm 100 nm) on performance AAO investigated. A maximum temperature reduction ( ) 10.6 °C 11.7 for 40 Al de Au,...