Very high resolution detection of gamma radiation at room-temperature using P-I-N detectors of CdZnTe and HgCdTe

Details Very high resolution detection of gamma radiation at room-temperature using P-I-N detectors of CdZnTe and HgCdTe Very high resolution detection of gamma radiation at room-temperature using P-I-N detectors of CdZnTe and HgCdTe

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994itns...41..989h&link_type=abstract

IEEE Transactions on Nuclear Science (ISSN 0018-9499), vol. 41, no. 4, pt. 1, p. 989-992

Astronomy and Astrophysics

Astrophysics

10

Cadmium Compounds, Electromagnetic Radiation, Epitaxy, Gamma Rays, Liquid Phase Epitaxy, Radiation Counters, Semiconductor Diodes, Semiconductors (Materials), Additives, Electric Current, Electrical Resistivity, Energy Gaps (Solid State), Semiconductor Devices

Scientific paper

High-energy photon detectors have been constructed by engineering and fabricating p-i-n diode structures consisting of bulk CdZnTe and epitaxial HgCdTe. The p-i-n structure was obtained by liquid-phase epitaxial growth of p and n doped HgCdTe layers on 'intrinsic' CdZnTe material about 1mm thick and approximately 25mm square. Curve tracing shows I-V curves with diode characteristics having resistivity above 1011 Omega -cm and leakage current of less than 400 pA to about - 60V reverse bias on a typical test piece approximately 5 x 8 x 1 mm. Spectra of similar test pieces have been obtained at room temperature with various nuclear isotopic sources over the range of 22 keV to 662 keV which show exceptionally high energy resolution. Resolution as good as 1.82% FWHM was obtained for the 356 keV line of 133Ba with a P/V = 3.4. The performance of these detectors combined with contemporary infrared technology capable of fabricating 2D arrays of these II-VI materials opens up manifold exciting applications in astrophysics, medical, industrial, environmental, and defense spectroscopy and imaging.

Affiliated with

Also associated with

No associations

Rating

Very high resolution detection of gamma radiation at room-temperature using P-I-N detectors of CdZnTe and HgCdTe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Very high resolution detection of gamma radiation at room-temperature using P-I-N detectors of CdZnTe and HgCdTe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Very high resolution detection of gamma radiation at room-temperature using P-I-N detectors of CdZnTe and HgCdTe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1497245