Jump to main content
Jump to site search

Issue 102, 2016, Issue in Progress
Previous Article Next Article

Bi-layer hole-injecting layer composed of molybdenum oxide and polyelectrolyte for solution-processed OLEDs with prolonged stability

Author affiliations

Abstract

Currently, poly(3,4-ethylene-dioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) is predominantly used as the hole-injecting layer in solution processed organic light-emitting diodes (OLEDs). However, its strong acidity is detrimental to device stability. Here, a bi-layer hole-injecting layer (BHIL) composed of molybdenum trioxide (MoO3) and an anionic polyelectrolyte has been used in solution processed OLEDs to replace PEDOT:PSS. The MoO3 layer was firstly solution deposited using low temperature combustion processing, which ensured that the device had a good hole-transporting ability. Then, an anionic polyelectrolyte was deposited on to the MoO3 layer also using a solution process, resulting in work function increase which was verified using peak force Kelvin probe force microscopy. Thus, the hole-injecting ability of the BHIL was found to be enhanced. It was found that BHIL-based OLEDs possessed a comparable electroluminescence performance but a better shelf-stability relative to the PEDOT:PSS based devices. This strategy gives a promising approach to obtaining high performance solution processed OLEDs with long-term stability.

Graphical abstract: Bi-layer hole-injecting layer composed of molybdenum oxide and polyelectrolyte for solution-processed OLEDs with prolonged stability

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 30 Aug 2016, accepted on 10 Oct 2016, published on 10 Oct 2016 and first published online on 10 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA21705B
Citation: RSC Adv., 2016,6, 100312-100317
  •   Request permissions

    Bi-layer hole-injecting layer composed of molybdenum oxide and polyelectrolyte for solution-processed OLEDs with prolonged stability

    J. Peng, X. Xu, C. Yao and L. Li, RSC Adv., 2016, 6, 100312
    DOI: 10.1039/C6RA21705B

Search articles by author