Toggle Main Menu Toggle Search

Open Access padlockePrints

4H-SiC Schottky diode arrays for X-ray detection

Lookup NU author(s): Dr Hua Khee Chan, Dr Konstantin VasilevskiyORCiD, Professor Nick Wright, Dr Alton Horsfall

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

Five SiC Schottky photodiodes for X-ray detection have been electrically characterized at room temperature. One representative diode was also electrically characterized over the temperature range 20 degrees C to 140 degrees C. The performance at 30 degrees C of all five X-ray detectors, in both current mode and for photon counting X-ray spectroscopy was investigated. The diodes were fabricated in an array form such that they could be operated as either a 2x2 or 1x3 pixel array. Although the devices showed double barrier heights, high ideality factors and higher than expected leakage current at room temperature (12 nA/cm(2) at an internal electric field of 105 kV/cm), they operated as spectroscopic photon counting soft X-ray detectors uncooled at 30 degrees C. The measured energy resolution (FWHM at 17.4 keV, Mo K alpha) varied from 1.36 to 1.68 keV among different diodes.


Publication metadata

Author(s): Lioliou G, Chan HK, Gohil T, Vassilevski KV, Wright NG, Horsfall AB, Barnett AM

Publication type: Article

Publication status: Published

Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Year: 2016

Volume: 840

Pages: 145-152

Print publication date: 21/12/2016

Online publication date: 05/10/2016

Acceptance date: 01/10/2016

ISSN (print): 0168-9002

ISSN (electronic): 1872-9576

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.nima.2016.10.002

DOI: 10.1016/j.nima.2016.10.002


Altmetrics

Altmetrics provided by Altmetric


Funding

Funder referenceFunder name
University of Sussex
ST/M002772/1STFC, United Kingdom
ST/M004635/1STFC, United Kingdom
RS130515Royal Society, United Kingdom

Share