6:1 aspect ratio silicon pillar based thermal neutron detector filled with 10B

R. J. Nikolić, A. M. Conway, C. E. Reinhardt, R. T. Graff, T. F. Wang, N. Deo, Chin Li "Barry" Cheung

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Current helium-3 tube based thermal neutron detectors have shortcomings in achieving simultaneously high efficiency and low voltage while maintaining adequate fieldability performance. By using a three-dimensional silicon p-i-n diode pillar array filled with boron-10 these constraints can be overcome. The fabricated pillar structured detector reported here is composed of 2 μm diameter silicon pillars with a 4 μm pitch and height of 12 μm. A thermal neutron detection efficiency of 7.3+-0.6% and a neutron-to-gamma discrimination of 105 at 2 V reverse bias were measured for this detector. When scaled to larger aspect ratio, a high efficiency device is possible.

Original languageEnglish (US)
Article number133502
JournalApplied Physics Letters
Volume93
Issue number13
DOIs
StatePublished - Oct 13 2008

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neutron counters
thermal neutrons
aspect ratio
silicon
boron 10
p-i-n diodes
helium isotopes
detectors
low voltage
discrimination
tubes
neutrons
electric potential

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Nikolić, R. J., Conway, A. M., Reinhardt, C. E., Graff, R. T., Wang, T. F., Deo, N., & Cheung, C. L. B. (2008). 6:1 aspect ratio silicon pillar based thermal neutron detector filled with 10B. Applied Physics Letters, 93(13), [133502]. https://doi.org/10.1063/1.2985817

6:1 aspect ratio silicon pillar based thermal neutron detector filled with 10B. / Nikolić, R. J.; Conway, A. M.; Reinhardt, C. E.; Graff, R. T.; Wang, T. F.; Deo, N.; Cheung, Chin Li "Barry".

In: Applied Physics Letters, Vol. 93, No. 13, 133502, 13.10.2008.

Research output: Contribution to journalArticle

Nikolić, RJ, Conway, AM, Reinhardt, CE, Graff, RT, Wang, TF, Deo, N & Cheung, CLB 2008, '6:1 aspect ratio silicon pillar based thermal neutron detector filled with 10B', Applied Physics Letters, vol. 93, no. 13, 133502. https://doi.org/10.1063/1.2985817
Nikolić RJ, Conway AM, Reinhardt CE, Graff RT, Wang TF, Deo N et al. 6:1 aspect ratio silicon pillar based thermal neutron detector filled with 10B. Applied Physics Letters. 2008 Oct 13;93(13). 133502. https://doi.org/10.1063/1.2985817
Nikolić, R. J. ; Conway, A. M. ; Reinhardt, C. E. ; Graff, R. T. ; Wang, T. F. ; Deo, N. ; Cheung, Chin Li "Barry". / 6:1 aspect ratio silicon pillar based thermal neutron detector filled with 10B. In: Applied Physics Letters. 2008 ; Vol. 93, No. 13.
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