A hybrid inorganic-organic light-emitting diode using Ti-doped ZrO as an electron-injection layer

We have fabricated stable efficient iridium( iii )-bis-5-(1-(naphthalene-1-yl)-1 H -phenanthro[9,10- d ]imidazole-2-yl) benzene-1,2,3-triol (acetylacetonate) [Ir(NPIBT) 2 (acac)] doped inverted bottom-emissive green organic light-emitting diodes using Ti-doped ZrO 2 nanomaterials as the electron injection layer. The current density ( J ) and luminance ( L ) of the fabricated devices with Ti-doped ZrO 2 deposited between an indium tin oxide cathode and an Ir(NPIBT) 2 (acac) emissive layer increased significantly at a low driving voltage (V) compared with control devices without Ti-doped ZrO 2 . The Ti-doped ZrO 2 layer can facilitate the electron injection effectively and enhances the current efficiency ( η c ) of 2.84 cd A −1 and power efficiency ( η p ) of 1.32 lm W −1 Ti-doped ZrO 2 facilitates electron injection effectively, leading to enhanced current efficiency of 2.84 cd A −1 and power efficiency of 1.32 lm W −1