Issue 42, 2018

Green solvent processed tetramethyl-substituted aluminum phthalocyanine thin films as anode buffer layers in organic light-emitting diodes

Abstract

This study presents the use of a green solvent processed tetramethyl-substituted aluminum phthalocyanine (AlMePc) thin film as an anode buffer layer in an organic light-emitting diode (OLED). The aim of the study was to probe the feasibility of green processing conditions for OLED fabrication. The hole-blocking properties of the AlMePc layer were determined to achieve devices with more balanced charge injection and transport processes. We achieved a significantly enhanced luminance of 11 790 cd m−2, which is twice that of a comparable diode without this anode buffer layer. Additionally, a higher luminous efficiency and power efficiency were obtained for the AlMePc-based OLED than those for a PEDOT:PSS-based diode. Furthermore, the improved charge balance in the OLED achieved by using the AlMePc layer along with its non-aqueous, organic processing methods yielded a maximum half-lifetime of 1860 min at a driving current density of 100 mA cm−2.

Graphical abstract: Green solvent processed tetramethyl-substituted aluminum phthalocyanine thin films as anode buffer layers in organic light-emitting diodes

Supplementary files

Article information

Article type
Paper
Submitted
26 Feb 2018
Accepted
02 Oct 2018
First published
03 Oct 2018

J. Mater. Chem. C, 2018,6, 11471-11478

Green solvent processed tetramethyl-substituted aluminum phthalocyanine thin films as anode buffer layers in organic light-emitting diodes

L. Zheng, J. Xu, Y. Feng, H. Shan, G. Fang and Z. Xu, J. Mater. Chem. C, 2018, 6, 11471 DOI: 10.1039/C8TC00960K

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