Organic materials and devices for detecting ionizing radiation

Doty, F Patrick; Chinn, Douglas A

Title: Organic materials and devices for detecting ionizing radiation

Abstract

A .pi.-conjugated organic material for detecting ionizing radiation, and particularly for detecting low energy fission neutrons. The .pi.-conjugated materials comprise a class of organic materials whose members are intrinsic semiconducting materials. Included in this class are .pi.-conjugated polymers, polyaromatic hydrocarbon molecules, and quinolates. Because of their high resistivities (.gtoreq.10.sup.9 ohmcm), these .pi.-conjugated organic materials exhibit very low leakage currents. A device for detecting and measuring ionizing radiation can be made by applying an electric field to a layer of the .pi.-conjugated polymer material to measure electron/hole pair formation. A layer of the .pi.-conjugated polymer material can be made by conventional polymer fabrication methods and can be cast into sheets capable of covering large areas. These sheets of polymer radiation detector material can be deposited between flexible electrodes and rolled up to form a radiation detector occupying a small volume but having a large surface area. The semiconducting polymer material can be easily fabricated in layers about 10 .mu.m to 100 .mu.m thick. These thin polymer layers and their associated electrodes can be stacked to form unique multi-layer detector arrangements that occupy small volume.

Inventors:

Doty, F Patrick ^[1]; Chinn, Douglas A ^[1]

Livermore, CA

Issue Date:: 2007-03-06

Research Org.:: Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 902637

Patent Number(s):: 7186987

Application Number:: 09/863,128

Assignee:: Sandia National Laboratories (Livermore, CA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION

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G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
G01T3/08 - with semiconductor detectors
G01T1/2935 - {using ionisation detectors}

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DOE Contract Number:: AC04-94AL85000

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats


                    Doty, F Patrick, and Chinn, Douglas A. Organic materials and devices for detecting ionizing radiation.  United States: N. p., 2007. 
        Web.

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                    Doty, F Patrick, & Chinn, Douglas A. Organic materials and devices for detecting ionizing radiation.  United States.

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                    Doty, F Patrick, and Chinn, Douglas A. Tue .  
        "Organic materials and devices for detecting ionizing radiation".  United States.  https://www.osti.gov/servlets/purl/902637.

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@article{osti_902637,

  title        = {Organic materials and devices for detecting ionizing radiation},

  author       = {Doty, F Patrick and Chinn, Douglas A},

  abstractNote = {A .pi.-conjugated organic material for detecting ionizing radiation, and particularly for detecting low energy fission neutrons. The .pi.-conjugated materials comprise a class of organic materials whose members are intrinsic semiconducting materials. Included in this class are .pi.-conjugated polymers, polyaromatic hydrocarbon molecules, and quinolates. Because of their high resistivities (.gtoreq.10.sup.9 ohmcm), these .pi.-conjugated organic materials exhibit very low leakage currents. A device for detecting and measuring ionizing radiation can be made by applying an electric field to a layer of the .pi.-conjugated polymer material to measure electron/hole pair formation. A layer of the .pi.-conjugated polymer material can be made by conventional polymer fabrication methods and can be cast into sheets capable of covering large areas. These sheets of polymer radiation detector material can be deposited between flexible electrodes and rolled up to form a radiation detector occupying a small volume but having a large surface area. The semiconducting polymer material can be easily fabricated in layers about 10 .mu.m to 100 .mu.m thick. These thin polymer layers and their associated electrodes can be stacked to form unique multi-layer detector arrangements that occupy small volume.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2007},

  month        = {3}

}

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Works referenced in this record:

Charged particle detection in organic semiconductors
journal, July 2000

Beckerle, P.; Ströbele, H.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 449, Issue 1-2
https://doi.org/10.1016/S0168-9002(00)00255-2

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Title: Organic materials and devices for detecting ionizing radiation

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Citation Formats

Charged particle detection in organic semiconductors journal, July 2000

Charged particle detection in organic semiconductors
journal, July 2000