skip to main content

Title: Adhesion and degradation of organic and hybrid organic-inorganic light-emitting devices

This paper presents the results of a combined analytical, computational, and experimental study of adhesion and degradation of Organic Light Emitting Devices (OLEDs). The adhesion between layers that are relevant to OLEDs is studied using an atomic force microscopy technique. The interfacial failure mechanisms associated with blister formation in OLEDs and those due to the addition of TiO{sub 2} nanoparticles into the active regions are then elucidated using a combination of fracture mechanics, finite element modeling and experiments. The blisters observed in the models are shown to be consistent with the results from adhesion, interfacial fracture mechanics models, and prior reports of diffusion-assisted phenomena. The implications of the work are then discussed for the design of OLED structures with improved lifetimes and robustness.
Authors:
;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [1] ;  [3] ;  [6]
  1. Department of Materials Science and Engineering, African University of Science and Technology, Federal Capital Territory, Abuja (Nigeria)
  2. Department of Electrical and Computer Engineering, Princeton University, Princeton, New Jersey 08544 (United States)
  3. (PRISM), Princeton University, Princeton, New Jersey 08544 (United States)
  4. Physics Advanced Laboratory, Sheda Science and Technology Complex, Abuja (Nigeria)
  5. (Nigeria)
  6. (United States)
Publication Date:
OSTI Identifier:
22277987
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ADHESION; ATOMIC FORCE MICROSCOPY; BLISTERS; DIFFUSION; FRACTURE MECHANICS; INTERFACES; LAYERS; LIFETIME; LIGHT EMITTING DIODES; NANOSTRUCTURES; PARTICLES; TITANIUM OXIDES