Non-uniformity Effects in CdZnTe Coplanar-Grid Detectors

doi:10.1002/pssb.200675103

Title: Non-uniformity Effects in CdZnTe Coplanar-Grid Detectors

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Authors:: Carini,G.; Bolotnikov, A.; Camarda, G.; James, R.

Publication Date:: Mon Jan 01 00:00:00 EST 2007

Research Org.:: Brookhaven National Laboratory (BNL) National Synchrotron Light Source

Sponsoring Org.:: Doe - Office Of Science

OSTI Identifier:: 930057

Report Number(s):: BNL-80684-2008-JA

DOE Contract Number:: DE-AC02-98CH10886

Resource Type:: Journal Article

Resource Relation:: Journal Name: Physica Status Solidi A; Journal Volume: 244; Journal Issue: 5

Country of Publication:: United States

Language:: English

Subject:: national synchrotron light source

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                    Carini,G., Bolotnikov, A., Camarda, G., and James, R. Non-uniformity Effects in CdZnTe Coplanar-Grid Detectors.  United States: N. p., 2007. 
        Web.  doi:10.1002/pssb.200675103.

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                    Carini,G., Bolotnikov, A., Camarda, G., & James, R. Non-uniformity Effects in CdZnTe Coplanar-Grid Detectors.  United States.  doi:10.1002/pssb.200675103.

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                    Carini,G., Bolotnikov, A., Camarda, G., and James, R. Mon .  
        "Non-uniformity Effects in CdZnTe Coplanar-Grid Detectors".  United States.  
        doi:10.1002/pssb.200675103.

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@article{osti_930057,

  title        = {Non-uniformity Effects in CdZnTe Coplanar-Grid Detectors},

  author       = {Carini,G. and Bolotnikov, A. and Camarda, G. and James, R.},

  abstractNote = {},

  doi          = {10.1002/pssb.200675103},

  journal      = {Physica Status Solidi A},

  number       = 5,

  volume       = 244,

  place        = {United States},

  year         = {Mon Jan 01 00:00:00 EST 2007},

  month        = {Mon Jan 01 00:00:00 EST 2007}

}

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DOI: 10.1002/pssb.200675103

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Non-Uniformity Effects in CdZnTe Coplanar-Grid Detectors

Carini,G. ; Bolotnikov, A. ; Camarda, G. ; ... - Physica Status Solidi B
DOI: 10.1002/pssb.200675103
Performance of CdZnTe coplanar-grid gamma-ray detectors

Luke, P.N. ; Eissler, E.E. - IEEE Transactions on Nuclear Science

The spectral performance of coplanar grid detectors using currently available CdZnTe materials is examined theoretically and experimentally. Calculated spectral response based on the typical carrier mobility lifetime products of current CdZnTe materials show that energy resolution close to the charge-statistics limit can be achieved. Charge transport nonuniformity, which may limit the spectral performance of present detectors, is studied using alpha particle scanning.
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Coplanar-grid CdZnTe detectors for gamma-ray spectroscopy and imaging

Luke, P.N. ; Amman, M. ; Lee, J.S. - Transactions of the American Nuclear Society

CdZnTe is a relatively new semiconductor that is being developed for use as a nuclear radiation detector. Its highly atomic numbers provide good detection efficiency for gamma rays, while its wide bandgap allows operation at room temperature. The biggest drawback of this material is its poor charge transport characteristics, especially for the holes. The coplanar-grid charge-sensing technique has been developed over the past several years as a method to circumvent this problem so that detectors with good energy resolution can be realized. The technique is based on the use of two coplanar, interdigitated anodes (grids) to sense the collection ofmore »« less
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Lee, E.Y. ; James, R.B. - Journal of Electronic Materials

Device simulations of (1) the laterally contacted-unipolar-nuclear detector (LUND), (2) the SpectrumPlus, (3) and the coplanar grid made of Cd{sub 0.9}Zn{sub 0.1}Te (CZT) were performed for {sup 137}Cs irradiation by 662.15 keV gamma-rays. Realistic and controlled simulations of the gamma-ray interactions with the CZT material were done using the MCNP4B2 Monte Carlo program, and the detector responses were simulated using the Sandia three-dimensional multi-electrode simulation program (SandTMSP). The simulations were done for the best and the worst expected carrier mobilities and lifetimes of currently commercially available CZT materials for radiation detector applications. For the simulated unipolar devices, the active devicemore »« less
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Temperature Study of CdZnTe Coplanar-Grid Detectors

Amman, Mark ; Lee, Julie S. ; Luke, Paul N. - IEEE Transactions on Nuclear Science

The coplanar-grid (CPG) and other electron only detection techniques have made possible the use of CdZnTe-based detectors for gamma-ray spectroscopy when high efficiency, good energy resolution, and near room temperature operation are required. Despite the demonstrated potential of the technologies, widespread use remains hampered in part by the limited availability of the highly uniform CdZnTe material required for high-resolution spectroscopy. However, it has been recently shown that mild cooling of CdZnTe CPG detectors can result in a significant improvement in the energy resolution of the detectors thereby allowing a wider range of material to be used for high-resolution applications. Inmore »« less
DOI: 10.1109/TNS.2006.879909

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