Fig. 1: Cathodoluminescence from multilayer hBN bubbles.
From: Strong and Localized Luminescence from Interface Bubbles Between Stacked hBN Multilayers
a SE2 image of representative hBN (100 nm)/hBN (50 nm) bubbles measured at 5 kV. b Panchromatic SEM-CL intensity map (5 kV) of a bubble in a suspended hBN (100 nm)/hBN (150 nm) double-multilayer structure, forming an optical cavity. The arrow shows the line scan direction for (c). c CL line scan across the bubble along y direction. For reference, the band-edge CL spectrum of an unstacked bottom hBN multilayer is shown in blue.
