A hybrid inorganic-organic light-emitting diode using Ti-doped ZrO2 as an electron-injection layer

Jayaraman Jayabharathi; Sekar Panimozhi; Venugopal Thanikachalam; Annadurai Prabhakaran; Palanivel Jeeva

doi:10.1039/c8ra00259b

A hybrid inorganic-organic light-emitting diode using Ti-doped ZrO₂ as an electron-injection layer

RSC Adv. 2018 Feb 22;8(15):8402-8411. doi: 10.1039/c8ra00259b. eCollection 2018 Feb 19.

Authors

Jayaraman Jayabharathi¹, Sekar Panimozhi¹, Venugopal Thanikachalam¹, Annadurai Prabhakaran¹, Palanivel Jeeva¹

Affiliation

¹ Department of Chemistry, Annamalai University Annamalainagar 608 002 Tamilnadu India jtchalam2005@yahoo.com +91 9443940735.

Abstract

We have fabricated stable efficient iridium(iii)-bis-5-(1-(naphthalene-1-yl)-1H-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 ZrO₂ nanomaterials as the electron injection layer. The current density (J) and luminance (L) of the fabricated devices with Ti-doped ZrO₂ 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 ZrO₂. The Ti-doped ZrO₂ 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.