Probing the bandgap and effects of t-BN domains in h-BN neutron detectors

Tingsuwatit, Attasit; Li, Jing; Lin, Jingyu; Jiang, Hongxing

doi:10.35848/1882-0786/ac917a

Probing the bandgap and effects of t-BN domains in h-BN neutron detectors

Journal Article · Thu Sep 22 00:00:00 EDT 2022 · Applied Physics Express

DOI:https://doi.org/10.35848/1882-0786/ac917a· OSTI ID:2422348

Tingsuwatit, Attasit ^[1]; Li, Jing ^[2]; Lin, Jingyu ^[2]; Jiang, Hongxing ^[2]

Texas Tech Univ., Lubbock, TX (United States); OSTI
Texas Tech Univ., Lubbock, TX (United States)

Thermal neutron detectors in a lateral scheme were fabricated from a 70μm thick freestanding B-10 enriched hexagonal BN (h-¹⁰BN). Two sets of channel peaks corresponding to the neutron capture by¹⁰B occurring in h-¹⁰BN comprising turbostratic domains (t-¹⁰BN) have been recognized in the nuclear reaction pulsed height spectrum, from which a bandgap of 5.5 eV was directly deduced for t-¹⁰BN. Improved device performance over the prior state-of-the-art implies that the transport properties in the lateral plane of t-BN domains are sufficiently good and their presence in h-BN is not a showstopper for the further advancement of h-BN detector technologies.

View Accepted Manuscript (DOE)

Research Organization:: Texas Tech Univ., Lubbock, TX (United States)

Sponsoring Organization:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

Grant/Contract Number:: AR0001257; AR0001552

OSTI ID:: 2422348

Journal Information:: Applied Physics Express, Journal Name: Applied Physics Express Journal Issue: 10 Vol. 15; ISSN 1882-0778

Publisher:: Japan Society of Applied PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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