Table 1 Key optical parameters of red emitters for LED applications.

Materials category and example		Emission peak (nm)	FWHM (nm)	CIE	Distance to Rec. 2100	Reference
Cd-based QDs	CdSe@CdS	640	30	(0.71, 0.29)	0.003	(12)
Pb-based QDs	CsPb(Br/I)₃	649	33	(0.72, 0.28)	0.017	(13)
Pb-based QDs	CsPbl₃	675	40	NA	NA	(14)
In-based QDs	InP/ZnSe/ZnS	630	50–60	(0.69, 0.31)	0.026	(15)
Organic molecule	DBP	610	>60	(0.61, 0.39)	0.14	(16)
Inorganic semiconductors	GaAlAs	>640	>25	(0.72, 0.28)	0.017	(17)
Sn-based	PEA₂Snl₄	632	21	(0.708, 0.292)	0	This work