Development of Low-Cost CZT for Nuclear Imaging.
DESCRIPTION (Provided by Applicant): Development of Low-Cost CZT grown by
Modified Vertical Bridgman Technique is proposed for use in making hybrid
arrays for high-resolution X-and gamma-ray imaging cameras, and making for
diagnosis of heart disease, detection of tumors, genetics, bone scans,
fluoroscopy, and cognitive neuroscience. Preliminary results are shown to
exhibit excellent crystalline quality, high electron resistively and
mobility-lifetime products for both electrons and holes have been obtained and
selected at random from ingots at SNL (l-4). Pixilated arrays fabricated at
Technion (5) exhibit excellent spectral performance. High-resolution photo
peaks are observed without any pulse processing or compensation techniques.
Spectrometers, operated at 400V, and realized on 20x20x5mm3 substrate, exhibit
3 percent resolution for l22keV photons with excellent peak-to valley ratio,
excellent counting efficiency and low leakage current. We propose to future
study, optimize and develop CZT growth technique. We believe that this
development will provide larger size wafers (40x40x5 mm3) and higher yield of
CZT single crystals with lower cost, and will represent a significant advance
towards the economic feasibility of high-resolution room-temperature gamma
cameras for nuclear medicine.
PROPOSED COMMERCIAL APPLICATION:
The proposed large-size CZT crystals produced by the MVB technique are needed for
production of room-temperature high-resolution solid-state imaging cameras. The
proposed technique is expected to provide better energy resolution and a low-cost
alternative to the current growth technique, and if successful, it will enable a broad
range of medical applications. This development will also open new opportunities
for use of the technology for environmental monitoring, baggage scanning and national
Small Business Information at Submission:
Principal Investigator:Longxia Li
YINNEL TECH, INC.
3702 W SAMPLE ST SOUTH BEND, IN 46619
Number of Employees: