Year: 2011
Type: article
Abstract: Silicon is a convenient and inexpensive platform for radiation detection, but has low stopping power for x-rays and gamma-rays with high energy (e.g., 100 keV, as used in computed tomography and digital radiography, or 1 MeV as desired for detection of nuclear materials). We have effectively increased the stopping power of silicon detectors, by producing layers of porous or micro-machined silicon, and infusing this layer with semiconductor quantum dots made of electron-dense materials. Results of prototype detectors show sensitivity to infrared, visible light, and x-rays, with dark current of less than 1 nA/mm 2 .
Source: Journal of Instrumentation
Authors: M Urdaneta, P Stepanov, I N Weinberg, I Pala, S Brock
Language: English
Subfield: Radiation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2038217852