Optical absorption and transport mechanisms of dual ion-beam-deposited boron-rich boron nitride films

Hard boron rich boron nitride nanoglasses

“…Total and partial coordination numbers are estimated by using the first minimum of the PPDFs (1.94‐2.05 Å for the B–N distribution and 1.96‐2.27 Å for the B–B correlation depending on B contents). The N‐average coordination number is around 3 up to 70 at.% B as illustrated in Figure , suggesting the dominated sp 2 hybridization in these amorphous alloys, in agreement with the experimental prediction . At 75% B concentration, the N‐coordination number rapidly rises and becomes 3.36.…”

“…B‐rich a‐BN or hydrogenated B‐rich a‐BN materials are of interest as well and have been investigated in several experiments . Yet most of these studies primarily focused on their physical properties, in particular, their electronic structures and did not provide solid information about their short‐range order and some of their mechanical properties in details.…”

“…Yet most of these studies primarily focused on their physical properties, in particular, their electronic structures and did not provide solid information about their short‐range order and some of their mechanical properties in details. On the basis of the X‐ray diffraction spectra, different local structures were proposed for B‐rich a‐BN depending on B content. For high B concentrations, the amorphous materials were predicted to have a random network of icosahedra.…”

“…For high B concentrations, the amorphous materials were predicted to have a random network of icosahedra. For the films with B contents less than 80 at.%, the icosahedrons were separated and the h‐BN like structure was emerged …”

Photoluminescence of Hexagonal Boron Nitride (h-BN) Film

“…The h-BN film type has received much attention because of similarities to carbon and its promising properties such as good chemical and mechanical stability. Optical properties [1]- [4] and deep levels [5], [6] of h-BN prepared by various methods have been explored because the relatively easier in preparation of h-BN compared with c-BN. In contrast, few studies on the photoluminescence (PL) spectra of h-BN have been reported.…”