Figure 5
From: Si-Doped Ceramic Al4O4C Nanowires: Full-Color Emission and Optical Waveguide Behavior

CL spectrum analysis.
(a) CL spectrum of the nanowires shown in Fig. 4(c), which illustrates full-color emission from the ultraviolet to infrared region. (b) Color temperature characterization and coordinate of the emission spectrum when adjusted in the chromaticity diagram 1931. (c) Comparison between the CL spectra of the Al4O4C micro-nano taper and Si-doped Al4O4C nanowires. (d) Speculated electronic structure differences between the two phases; the possible transition level is determined based on the light emission.