Microcrystalline CVD-diamond samples as storage media for ultraviolet images

Author

Mazzeo, Giuseppe ; Salvatori, S. ; Rossi, M.C. ; Conte, G.

Author_Institution

INFM, Universita degli Studi Roma, Rome, Italy

Volume

39

Issue

1

fYear

2003

Firstpage

107

Lastpage

108

Abstract

Photocathode structures have been fabricated by means of thin microcrystalline CVD-diamond samples. Owing to the presence of structural defects in the material, metastable phenomena related to the existence of trap states within the diamond bandgap can be observed. Such effects are mainly reflected in the increase of the subgap photoemission sensitivity of the diamond film after exposure to over bandgap ultraviolet photons (λ<225 nm). This fact suggests the use of diamond as a storage medium for ultraviolet images. The possible structure of an image sensor for UV-radiation based on a large area diamond film on silicon has been proposed and tested.

Keywords

CVD coatings; diamond; elemental semiconductors; image sensors; optical storage; photocathodes; photoemission; semiconductor thin films; ultraviolet detectors; 225 nm; C; UV-radiation image sensor; diamond bandgap; diamond film; large area diamond film; metastable phenomena; microcrystalline CVD-diamond samples; over bandgap ultraviolet photons; photocathode structures; storage media; structural defects; subgap photoemission sensitivity; trap states; ultraviolet images;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20030100

Filename

1182382