Thermal stability, work function and Fermi level analysis of 2D multi-layered hexagonal boron nitride films

Probing Correlation of Optical Emission and Defect Sites in Hexagonal Boron Nitride by High-Resolution STEM-EELS

“…It should be noted, however, that typical hBN samples have Fermi levels above the midgap. 52 Assuming the sample studied herein is typical, we focus on the +1, 0, and −1 charge states, as they are the most likely to form. In Figure 4c we plot the Kohn−Sham (KS) eigenvalues of the carbon complex in the relevant charge states (with the +2 case added as a reference to make the trend across the charge states clearer).…”

“…From these results, we see that this defect complex could exist in five different charge states depending on the “local Fermi level”. It should be noted, however, that typical hBN samples have Fermi levels above the midgap . Assuming the sample studied herein is typical, we focus on the +1, 0, and −1 charge states, as they are the most likely to form.…”