PEDOT:PSS/Graphene Nanocomposite Hole-Injection Layer in Polymer Light-Emitting Diodes

Table 1

Electrical characteristics of the PLEDs with various concentrations of PEDOT:PSS/graphene composite layers.

Device characteristics	Weight percentage of graphene oxide (wt%)
	0	0.005	0.01	0.03	0.05	0.1
𝑉𝑇(V)	3.12	3	2.8	2.75	2.6	2.75
Max. luminance (cd/m^2)	15480	16900	20200	25800	16930	10730
Max. current eff. (cd/A)	1.43	1.56	1.88	2.09	1.48	0.84
Max. power eff. (lm/W)	0.58	0.76	0.76	0.79	0.64	0.24