On the Optical Response of Tellurium Activated Zinc Selenide ZnSe:Te Single Crystal
| Autor: | Dionysios Linardatos, Christos Michail, Athanasios Bakas, Anastasios C. Konstantinidis, Konstantinos Ninos, Ioannis Valais, Nektarios Kalyvas, Ioannis Kandarakis, George Fountos |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
General Chemical Engineering chemistry.chemical_element 02 engineering and technology Scintillator 01 natural sciences Bismuth Inorganic Chemistry Detective quantum efficiency chemistry.chemical_compound ZnSe: Te radiation sensors 0103 physical sciences crystals lcsh:QD901-999 General Materials Science Zinc selenide 010302 applied physics business.industry 021001 nanoscience & nanotechnology Condensed Matter Physics chemistry Scintillators Optoelectronics lcsh:Crystallography medical detectors 0210 nano-technology Luminescence business Tellurium Single crystal Germanium oxide |
| Zdroj: | Crystals, Vol 10, Iss 961, p 961 (2020) Crystals Volume 10 Issue 11 |
| ISSN: | 2073-4352 |
| DOI: | 10.3390/cryst10110961 |
| Popis: | In this study, the light output of a zinc selenide activated with tellurium (ZnSe: Te) single crystal was measured for X-ray radiography applications. A cubic crystal (10 × 10 × 10 mm) was irradiated using X-rays with tube voltages from 50 to 130 kV. The resulting energy absorption efficiency, detective quantum efficiency, and absolute luminescence efficiency were compared to published data for equally sized GSO: Ce (gadolinium orthosilicate) and BGO (bismuth germanium oxide) crystals. The emitted light was examined to estimate the spectral compatibility with widely used optical sensors. Energy absorption efficiency and detective quantum efficiency of ZnSe: Te and BGO were found to be similar, within the X-ray energies in question. Light output of all three crystals showed a tendency to increase with increasing X-ray tube voltage, but ZnSe: Te stood at least 2 EU higher than the others. ZnSe: Te can be coupled effectively with certain complementary metal&ndash oxide&ndash semiconductors (CMOS), photocathodes, and charge-coupled-devices (CCD), as the effective luminescence efficiency results assert. These properties render the material suitable for various imaging applications, dual-energy arrays included. |
| Databáze: | OpenAIRE |
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