Radiation detector properties of CdTe0.9Se0.1:Cl crystals grown under microgravity in a rotating magnetic field
Creators
- 1. Freiburger Materialforschungszentrum FMF, Freiburg (Germany)
- 2. Kristallographisches Institut, Universitaet Freiburg, Freiburg (Germany)
- 3. SPLAV Technical Center, Moscow (Russian Federation)
Description
The influence of growth conditions on radiation detector performance was studied by examining Cd(Te,Se):Cl crystals. They were grown by the travelling heater method under microgravity conditions during the PHOTON 8 mission. An additional forced convection was produced by a rotating magnetic field (400 Hz) of 2 mT. The influence on crystal quality was analyzed by several characterization methods such as time dependent charge measurement, photo-induced current transient spectroscopy and admittance spectroscopy. The charge collection efficiency of detectors was increased from 10% without magnetic field up to 66% by the influence of the rotating magnetic field. The improved detector performance is explained by the increased resistivity and a reduced number of deep levels
Additional details
Publishing Information
- Journal Title
- Journal of Crystal Growth
- Journal Volume
- 166
- Journal Issue
- 1-4
- Journal Page Range
- p. 256-260.
- ISSN
- 0022-0248
- CODEN
- JCRGAE
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 28012522
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- CADMIUM SELENIDES; CADMIUM TELLURIDES; CDTE SEMICONDUCTOR DETECTORS; CHARGE COLLECTION; CRYSTAL GROWTH; MAGNETIC FIELDS; PERFORMANCE; PHYSICAL RADIATION EFFECTS
- Descriptors DEC
- CADMIUM COMPOUNDS; CHALCOGENIDES; MEASURING INSTRUMENTS; RADIATION DETECTORS; RADIATION EFFECTS; SELENIDES; SELENIUM COMPOUNDS; SEMICONDUCTOR DETECTORS; TELLURIDES; TELLURIUM COMPOUNDS