[en] Lead(IV) dioxide (PbO₂) has been used as the electron injection layer (EIL) to realize high-efficiency inverted top-emitting organic light-emitting diodes (I-TOLEDs). It can be seen that the inserting of the PbO₂ EIL significantly reduces operational voltage, thus greatly improving the current efficiency and power efficiency of fabricated I-TOLEDs. The 10-(2-benzothiazolyl)-1, 1, 7, 7-tetramethyl-2, 3, 6, 7-tetrahydro-1H, 5H, 11H-[1] benzopyrano [6, 7, 8-ij] quinolizin-11-one (C545T)-based I-TOLEDs with the PbO₂ EIL exhibit a maximum current efficiency of 31.6 cd A⁻¹ and a maximum power efficiency of 14.3 lm W⁻¹, which are both higher than 22.5 cd A⁻¹ and 5.4 lm W⁻¹ of the I-TOLEDs with LiF as the EIL respectively. A detailed analysis with respect to the role mechanism of PbO₂ in electron injection has been presented. The improvement in EL performance is attributed to the formation of the interfacial dipoles at the electrode interface due to charge transfer between PbO₂ and Alq₃