Electronic characterization of mercuric iodide gamma ray spectrometers

Conference · Fri Jan 01 04:00:00 EST 1993

OSTI ID:6337510

Gerrish, V M

During the past four years the yield of high resolution mercuric iodide (HgI[sub 2]) gamma ray spectrometers produced at EG G/EM has increased dramatically. Data is presented which demonstrates a strong correlation between starting material and spectrometer performance. Improved spectrometer yields are attributed to the method of HgI[sub 2] synthesis and to material purification procedures. Data is presented which shows that spectrometer performance is correlated with hole mobility-lifetime products. In addition, the measurement of Schottky barrier heights on HgI[sub 2] spectrometers has been performed using I-V curves and the photoelectric method. Barrier heights near 1.1 eV have been obtained using various contacts and contact deposition methods. These data suggest the pinning of the Fermi level at midgap at the HgI[sub 2] surface, probably due to surface states formed prior to contact deposition.

• Research Organization: EG and G Energy Measurements, Inc., Goleta, CA (United States). Santa Barbara Operations
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC08-88NV10617
• OSTI ID: 6337510
• Report Number(s): EGG-10617-2182; CONF-930405--22; ON: DE93015524
• Country of Publication: United States
• Language: English

Related Subjects

440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DATA
DEPOSITION
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
FERMI LEVEL
GAMMA RADIATION
GAMMA SPECTROMETERS
HALIDES
HALOGEN COMPOUNDS
HOLE MOBILITY
INFORMATION
IODIDES
IODINE COMPOUNDS
IONIZING RADIATIONS
LIFETIME
MEASURING INSTRUMENTS
MERCURY COMPOUNDS
MERCURY HALIDES
MERCURY IODIDES
MOBILITY
PERFORMANCE
PHYSICAL PROPERTIES
PURIFICATION
RADIATIONS
RESOLUTION
SPECTROMETERS
SYNTHESIS