Fabrication and characterization of a novel self-powered solid-state neutron detector

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Authors
Huang, Kuan-Chih (Jacky)
Issue Date
2014-08
Type
Electronic thesis
Thesis
Language
ENG
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Electrical engineering
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Abstract
In this research, a new type of detector structure was proposed, designed and fabricated. Among several detector structures evaluated, a honeycomb-like micro- structured Si p+-n diode that is filled with 10B as a neutron converter material was selected. A continuous p+-n junction is formed over the entire surface of the honeycomb structure in order to detect the energetic charged particles (alpha particles and 7Li ions) emitted from boron and thermal neutron interactions. The continuous p+-n junction reduces the interface traps from the etched Si surfaces, which minimizes the signal loss and lowers the leakage current simultaneously. At the same time, it also fully depletes the Si between the deep holes, which maximizes the signal voltage due the reduced device capacitance and enables the operation of the detectors without bias.
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August 2014
School of Engineering
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Rensselaer Polytechnic Institute, Troy, NY
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