Title :
Dosimetric Performance of Single-Crystal Diamond X-Ray Schottky Photodiodes
Author :
Bellucci, Andrea ; Orlando, Salvatore ; Caputo, Domenico ; Cappelli, E. ; Trucchi, D.M.
Author_Institution :
IMIP, Monterotondo, Italy
Abstract :
Single-crystal diamond Schottky photodiodes have been developed following a WC-diamond-TiC/Ti/Ag vertical structure for X-ray dosimetry with characteristics of low leakage current and the capability of zero-bias operations. Continuous and modulated X-ray measurements show that the devices developed provide a linear response to dose rate at low bias voltages (<; 2.5 V) and at modulation frequencies > 130 Hz. This supports their application in modulated radiotherapy treatments.
Keywords :
Schottky diodes; diamond; dosimetry; leakage currents; photodiodes; tungsten compounds; TiC-Ti-Ag; X-ray dosimetry; dosimetric performance; low leakage current characteristics; modulated X-ray measurements; modulated radiotherapy treatments; single-crystal diamond X-ray schottky photodiodes; zero-bias operations; Diamond; Schottky diode; fast response; linearity; radiation dosimeter;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2013.2253595
