Microelectrical characterisation of diamond films: an attempt to understand the structural influence on electrical transport phenomena

• Tipo: Artigo em Revista Científica Internacional
• Data: 2000

Autores

L. Pereira (Autor) Outra; E. Pereira (Autor) Outra; H. Gomes (Autor) Outra; Alírio Rodrigues (Autor) FEUP; A. Rees (Autor) Outra; A. Cremades (Autor) Outra; J. Piqueras (Autor) Outra

Revista

Título: Diamond and Related Materials

Vol. 9 Nº 3

Páginas: 1061-1065

ISSN: 0925-9635

Editora: Elsevier

Indexação

ISI Web of Knowledge - 10 Citações

Scopus - 15 Citações

Outras Informações

ID Authenticus: P-001-0D3

DOI: 10.1016/s0925-9635(99)00330-1

Abstract (EN): The properties of microelectrical conduction in microwave plasma assisted chemical vapour deposition (MPCVD) diamond films were investigated using an atomic force microscopy probe, giving a morphological map of the electrical conduction with a spatial resolution better than 500 nm. Also, a cathodoluminescence map with a spatial resolution of about 1 mu m was obtained, giving the possibility of correlating the defects involved in the different carrier transport phenomena. Using micro-Raman analysis several bands could be identified. It is found that the defects responsible for the cathodoluminescence (CL) blue band are responsible for the major part of the electrical conduction in diamond films, while the defects localised in < 111 > surfaces, responsible for the green CL emission, could be involved in a less conductive process.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5