Articles producció científica> Química Física i Inorgànica

Tailoring Wettability Properties of GaN Epitaxial Layers through Surface Porosity Induced during CVD Deposition

  • Dades identificatives

    Identificador: imarina:9241817
    Autors:
    Mena, JosueCarvajal, Joan J.Zubialevich, VitalyParbrook, Peter J.Diaz, FrancescAguilo, Magdalena
    Resum:
    Porous GaN epitaxial layers were prepared using single-step chemical vapor deposition (CVD) through the direct reaction of ammonia with gallium. The degree of porosity and pore diameters in the resulting GaN were analyzed by means of SEM and AFM and were found to depend on the GaN deposition time. Furthermore, the evolution of the contact angle of a droplet of water located on the surface of these GaN epitaxial layers with the deposition time was investigated. We observe a transition from the hydrophilic regime to the hydrophobic regime for deposition times longer than 15 min. The observed dependence of GaN hydrophobicity on its degree of porosity is discussed and explained in the framework of the Cassie-Baxter model.
  • Altres:

    Autor segons l'article: Mena, Josue; Carvajal, Joan J.; Zubialevich, Vitaly; Parbrook, Peter J.; Diaz, Francesc; Aguilo, Magdalena;
    Departament: Química Física i Inorgànica
    Autor/s de la URV: Aguiló Díaz, Magdalena / Carvajal Martí, Joan Josep / Díaz González, Francisco Manuel
    Paraules clau: Surface porosity Single-step Property Porous gan Porosity Pore diameters Iii-v semiconductors Hydrophobicity Gan epitaxial layers Gallium nitride Epitaxial growth Direct reactions Diodes Deposition time Degree of porosity Contact angle Chemical vapour deposition Chemical vapor deposition Ammonia Algan/gan hemt Afm
    Resum: Porous GaN epitaxial layers were prepared using single-step chemical vapor deposition (CVD) through the direct reaction of ammonia with gallium. The degree of porosity and pore diameters in the resulting GaN were analyzed by means of SEM and AFM and were found to depend on the GaN deposition time. Furthermore, the evolution of the contact angle of a droplet of water located on the surface of these GaN epitaxial layers with the deposition time was investigated. We observe a transition from the hydrophilic regime to the hydrophobic regime for deposition times longer than 15 min. The observed dependence of GaN hydrophobicity on its degree of porosity is discussed and explained in the framework of the Cassie-Baxter model.
    Àrees temàtiques: Surfaces and interfaces Spectroscopy Química Medicine (miscellaneous) Medicina ii Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materiais Interdisciplinar General medicine General materials science Farmacia Engenharias iv Engenharias iii Engenharias ii Electrochemistry Condensed matter physics Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, physical Chemistry, multidisciplinary Biotecnología Biodiversidade Astronomia / física
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: f.diaz@urv.cat joanjosep.carvajal@urv.cat magdalena.aguilo@urv.cat
    Identificador de l'autor: 0000-0003-4581-4967 0000-0002-4389-7298 0000-0001-6130-9579
    Data d'alta del registre: 2024-07-27
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://pubs.acs.org/doi/10.1021/acs.langmuir.1c02316
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Langmuir. 37 (50): 14622-14627
    Referència de l'ítem segons les normes APA: Mena, Josue; Carvajal, Joan J.; Zubialevich, Vitaly; Parbrook, Peter J.; Diaz, Francesc; Aguilo, Magdalena; (2021). Tailoring Wettability Properties of GaN Epitaxial Layers through Surface Porosity Induced during CVD Deposition. Langmuir, 37(50), 14622-14627. DOI: 10.1021/acs.langmuir.1c02316
    DOI de l'article: 10.1021/acs.langmuir.1c02316
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2021
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Chemistry, Multidisciplinary,Chemistry, Physical,Condensed Matter Physics,Electrochemistry,Materials Science (Miscellaneous),Materials Science, Multidisciplinary,Medicine (Miscellaneous),Spectroscopy,Surfaces and Interfaces
    Surface porosity
    Single-step
    Property
    Porous gan
    Porosity
    Pore diameters
    Iii-v semiconductors
    Hydrophobicity
    Gan epitaxial layers
    Gallium nitride
    Epitaxial growth
    Direct reactions
    Diodes
    Deposition time
    Degree of porosity
    Contact angle
    Chemical vapour deposition
    Chemical vapor deposition
    Ammonia
    Algan/gan hemt
    Afm
    Surfaces and interfaces
    Spectroscopy
    Química
    Medicine (miscellaneous)
    Medicina ii
    Materials science, multidisciplinary
    Materials science (miscellaneous)
    Materials science (all)
    Materiais
    Interdisciplinar
    General medicine
    General materials science
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Electrochemistry
    Condensed matter physics
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Chemistry, physical
    Chemistry, multidisciplinary
    Biotecnología
    Biodiversidade
    Astronomia / física
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