Global ETD Search
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Showing 1 to 11 of 11 for “"CdZnTe"”.
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Purification of Cd, Zn and Te for CdZnTe growth
… improve the quality of cadmium-zinc-telluride (CdZnTe) crystal growth. Specifically, vacuum distillation, zone refining and H[subscript]2 gas flow assisted zone refining were all investigated as methods to purify the constituent elements of CdZnTe. A unique multi-chamber ampoule was used to …
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Sub-Millimetre Positron-Emission Particle Tracking Using a CdZnTe Semiconductor Array
… use of pixelated room-temperature semiconductor CdZnTe detectors with high pixel resolution to implement PEPT. Using a PolarisJ CZT detector module array built by H3D Inc. (Ann Arbor, MI, USA) with a field-of-view of 40 × 60 × 20 mm3 , a positron-emitting 22Na source (1 mm diameter) with an …
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Growth of CdTe/ CdZnTe single crystals by the vertical gradient freezing method
Single crystals of CdTe/CdZnTe are important semiconducting materials for the development of x-ray and y-ray detectors. They can also be used as substrates for the epitaxial growth of HgCdTe, which is a key material for far-infrared detectors with high resolution and large detection area. …
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Pulse-shape studies with coplanar grid CdZnTe detectors and searches for rare nuclear decays with the COBRA experiment
The inference of massive neutrino states through the observation of flavor oscillations boosted the importance of direct and indirect mass searches, including the search for the hypothesized neutrinoless double beta decay (0νββ-decay). Nowadays, the search for this ultra-rare nuclear transition is …
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Development of a Monte Carlo simulation model of the signal formation processes inside photoconducting materials for active matrix flat panel direct detectors in digital mammography
… όπως τα a-Se, a-As2Se3, GaSe, GaAs, Ge, CdTe, CdZnTe, Cd0.8Zn0.2Te, ZnTe, PbO, TlBr, PbI2 και HgI2, με την ανάπτυξη μοντέλου προσομοίωσης με τεχνικές Monte Carlo της παραγωγής των πρωτογενών ηλεκτρονίων για διάφορα φάσματα ακτίνων Χ στο μαστογραφικό εύρος ενεργειών. Το μοντέλο προσομοιώνει την …
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Optical characterization of compound semiconductors using photoconductivity and photoreflectance
… was applied to determine composition in CdZnTe standards via band gap energy determinations. The excitonic contributions at room temperature were shown to be in agreement with literature data. The lack of lattice matched substrates for the growth of GaN is still providing material with …
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Photoluminescence study of cadmium zinc telluride
… are signatures of various point defects in bulk CdZnTe, (2) determining the zinc concentration in these crystals, and (3) identifying the nature of room-temperature PL. PL spectra at 5 K was used to determine the bandgap and hence the zinc concentrations. In the current state-of-the-art CZT grown …
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Characterization of single-sided cadmium zinc telluride strip detectors for high energy astrophysics applications
<p>Cadmium zinc telluride (CdZnTe or CZT) was introduced as a new room temperature semiconductor detector due to its good energy resolution, high atomic number, high density and good stopping power in the early 1990s. UNH has focused on developing CZT strip detector designs for astrophysical …
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Morphology, structure and electronic properties of CdTe surfaces studied by scanning tunneling microscopy
… structure and electronic properties of CdTe and CdZnTe surfaces have been studied. We have systematically investigated the three low index surface planes of the cubic crystal, that is the {100}, {110} and {111} surface planes. In addition, wet chemically treated surfaces were also examined. Clean …
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Lower hybrid modeling and experiments on Alcator C-Mod
… The HXR diagnostic consists of an array of 32 CdZnTe detectors to image energies in the 20-200 keV range. Detectors and pulse processing electronics were integrated into a compact and modular package. The system also makes use of fast digitization and software signal processing techniques …
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Optimization Studies for the COBRA Neutrinoless Double-Beta Decay Experiment and Results from a Prototype
The COBRA experiment uses Cadmium Zinc Telluride: CZT) room-temperature semiconductor detectors to search for the neutrinoless double-beta decay of cadmium-116. While the experiment has produced globally competitive half-life limits with data from coplanar-grid CZT detectors, a future ton-scale …