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  4. The fabrication of small molecule organic light-emitting diode pixels by laser-induced forward transfer
 
research article

The fabrication of small molecule organic light-emitting diode pixels by laser-induced forward transfer

Shaw-Stewart, J. R. H.
•
Mattle, T.
•
Lippert, T. K.
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2013
Journal Of Applied Physics

Laser-induced forward transfer (LIFT) is a versatile organic light-emitting diode (OLED) pixel deposition process, but has hitherto been applied exclusively to polymeric materials. Here, a modified LIFT process has been used to fabricate small molecule Alq(3) organic light-emitting diodes (SMOLEDs). Small molecule thin films are considerably more mechanically brittle than polymeric thin films, which posed significant challenges for LIFT of these materials. The LIFT process presented here uses a polymeric dynamic release layer, a reduced environmental pressure, and a well-defined receiver-donor gap. The Alq(3) pixels demonstrate good morphology and functionality, even when compared to conventionally fabricated OLEDs. The Alq(3) SMOLED pixel performances show a significant amount of fluence dependence, not observed with polymerical OLED pixels made in previous studies. A layer of tetrabutyl ammonium hydroxide has been deposited on top of the aluminium cathode, as part of the donor substrate, to improve electron injection to the Alq(3), by over 600%. These results demonstrate that this variant of LIFT is applicable for the deposition of functional small molecule OLEDs as well as polymeric OLEDs. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4788710]

  • Details
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Type
research article
DOI
10.1063/1.4788710
Web of Science ID

WOS:000314724500005

Author(s)
Shaw-Stewart, J. R. H.
Mattle, T.
Lippert, T. K.
Nagel, M.
Nueesch, F. A.
Wokaun, A.
Date Issued

2013

Publisher

Amer Inst Physics

Published in
Journal Of Applied Physics
Volume

113

Issue

4

Article Number

043104

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
IMX  
Available on Infoscience
March 28, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/90858
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