Metal-semiconductor-metal neutron detectors based on hexagonal
boron nitride epitaxial layers

S. Majety; J. Li; X. K. Cao; R. Dahal; J. Y. Lin; H. X. Jiang

doi:10.1117/12.940748

24 October 2012 Metal-semiconductor-metal neutron detectors based on hexagonal boron nitride epitaxial layers

S. Majety, J. Li, X. K. Cao, R. Dahal, J. Y. Lin, H. X. Jiang

Author Affiliations +

Proceedings Volume 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV; 85070R (2012) https://doi.org/10.1117/12.940748
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

Hexagonal boron nitride (hBN) possesses extraordinary potential for solid-state neutron detector applications. This stems from the fact that the boron-10 (¹⁰B) isotope has a capture cross-section of 3840 barns for thermal neutrons that is orders of magnitude larger than other isotopes. Epitaxial layers of hBN have been synthesized by metal organic chemical vapor deposition (MOCVD). Experimental measurements indicated that the thermal neutron absorption coefficient and length of natural hBN epilayers are about 0.0036 μm^-1 and 277 μm, respectively. To partially address the key requirement of long carrier lifetime and diffusion length for a solid-state neutron detector, micro-strip metal–semiconductor–metal detectors were fabricated and tested. A good current response was generated in these detectors using continuous irradiation with a thermal neutron beam, corresponding to an effective conversion efficiency approaching ~80% for absorbed neutrons.

Citation Download Citation

S. Majety, S. Majety, J. Li, J. Li, X. K. Cao, X. K. Cao, R. Dahal, R. Dahal, J. Y. Lin, J. Y. Lin, H. X. Jiang, H. X. Jiang, "Metal-semiconductor-metal neutron detectors based on hexagonal boron nitride epitaxial layers", Proc. SPIE 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV, 85070R (24 October 2012); doi: 10.1117/12.940748; https://doi.org/10.1117/12.940748

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years