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

• Type: Article in International Scientific Journal
• Date: 2000

Authors

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

Journal

Title: Diamond and Related Materials

Vol. 9 No. 3

Pages: 1061-1065

ISSN: 0925-9635

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 10 Citations

Scopus - 15 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5