There's plenty of similar guides to making Silicon Carbide LEDs. [1][2] It's basically recreating Round's discovery.
[0] https://hackaday.com/2012/06/05/homemade-silicon-carbide-led...
[1] https://www.youtube.com/watch?v=MiHjPCzNxb8
[2] https://web.archive.org/web/20170704125554/http://www.dlip.d...