@noiob @Siph oh! that's interesting.
Phosphorus the element is commonly used in other types of LEDs so i thought you might've meant that; InGaAlP, GaAlP, InGaP, all these weird III-V semiconductors are common in red, yellow, orange, and green LEDs but you have to move to InGaN, GaAlN, and other nitride semiconductors for blue, violet, and UV ones
-F
@noiob @Siph what do you mean the ones with phosphorus? I don't think you can make a white LED using a phosphide semiconductor, their bandgap is too low
-F