Fabrication and Characterization of Room Temperature Nuclear Radiation CdZnTe 3×3 Pixel Array Detector
- Resource Type
- Conference
- Authors
- Li, Xia; Chu, Junhao; Li, Longxia; Dai, Ning; Zhang, Shengdong; Zhang, Fujia
- Source
- 2012 Symposium on Photonics and Optoelectronics Photonics and Optoelectronics (SOPO), 2012 Symposium on. :1-3 May, 2012
- Subject
- Photonics and Electrooptics
Fields, Waves and Electromagnetics
Computing and Processing
Communication, Networking and Broadcast Technologies
Detectors
Crystals
Energy resolution
Arrays
Conductivity
Leakage current
- Language
- ISSN
- 2156-8464
2156-8480
The detector-grade crystal was manufactured by modify bridgman method in Yinnel Tec. The resistivity of the CZT is ~1011(Ω•cm). Their high resistivity caused low leakage current. We fabricated 3×3 pixel array detector. We measure spectral response of the detector, through Gaussian Fitting, The energy resolution of the detector is 23.7%(28.9 keV FWHM) for 122 keV 57Co and 17.9%(117.8keV FWHM) for 662 keV 137Cs, respectively. The spectrum is gauss distributing. Low energy band tail is sharp. It shows that effect of hole is weak. the detector has no polarization.