On the Aging Effects of 4H-SiC Schottky Photodiodes Under High Intensity Mercury Lamp Irradiation

Author

Sciuto, Antonella ; Mazzillo, Massimo ; Raineri, Vito ; Catania, Giuseppe ; D´Arrigo, Giuseppe ; Roccaforte, Fabrizio

Author_Institution

CNR-IMM, Catania, Italy

Volume

22

Issue

11

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

775

Lastpage

777

Abstract

Ultraviolet (UV) germicidal irradiation uses high-power 254-nm radiation from low-pressure mercury discharge lamps to kill or inactivate viral, bacterial, and fungal species. Since UV germicidal irradiation effectiveness depends primarily on the UV dose delivered to the microorganisms, it is essential to monitor the power emitted from the source by using appropriate UV-light detectors. We report on preliminary aging tests performed on high signal-to-noise ratio 4H-SiC Schottky photodiodes under high intensity mercury lamp irradiation (10 mW/cm²).

Keywords

Schottky diodes; ageing; biological effects of ultraviolet radiation; mercury vapour lamps; microorganisms; photodiodes; radiation hardening (electronics); silicon compounds; ultraviolet sources; wide band gap semiconductors; Schottky photodiodes; SiC; UV light detector; aging effect; bacterial species; fungal species; high intensity mercury lamp irradiation; low pressure mercury discharge lamps; ultraviolet germicidal irradiation; viral species; wavelength 254 nm; 4H-SiC Schottky photodiode; Aging effects; ultraviolet (UV) light detectors; ultraviolet (UV) light irradiation; water sterilization;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2010.2045649

Filename

5432971