Back to Search Start Over

High detection efficiency micro-structured solid-state neutron detector with extremely low leakage current fabricated with continuous p-n junction

Authors :
Rajendra Dahal
James J.-Q. Lu
Yaron Danon
Ishwara B. Bhat
Kuan-Chih Huang
Source :
Applied Physics Letters. 102:152107
Publication Year :
2013
Publisher :
AIP Publishing, 2013.

Abstract

We report the continuous p-n junction formation in honeycomb structured Si diode by in situ boron deposition and diffusion process using low pressure chemical vapor deposition for solid-state thermal neutron detection applications. Optimized diffusion temperature of 800 °C was obtained by current density-voltage characteristics for fabricated p+-n diodes. A very low leakage current density of ∼2 × 10−8 A/cm2 at −1 V was measured for enriched boron filled honeycomb structured neutron detector with a continuous p+-n junction. The neutron detection efficiency for a Maxwellian spectrum incident on the face of the detector was measured under zero bias voltage to be ∼26%. These results are very encouraging for fabrication of large area solid-state neutron detector that could be a viable alternative to 3He tube based technology.

Details

ISSN :
10773118 and 00036951
Volume :
102
Database :
OpenAIRE
Journal :
Applied Physics Letters
Accession number :
edsair.doi...........b4eba929f3a9ae9da1c8047549c7dc7a
Full Text :
https://doi.org/10.1063/1.4802204