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Lookup NU author(s): Professor Steve BullORCiD
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Two of the commonly-used Organic Light Emitting Diode (OLED) materials tris-(8-hydroxyquinoline) aluminum (Alq3) and N,N′-bis(naphthalen-1-yl)-N,N′-bis(phenyl)benzidine (NPB) are thermally evaporated as thin-films on two kinds of substrates with different hardness. By using nano-indentation techniques, the reduced elastic modulus of each of the coatings is measured. The data are carefully analysed through the standard Oliver and Pharr method, and the recently developed critical indentation depth method which takes the effect of the substrate more into account.
Author(s): Chiang CJ, Bull S, Winscom C, Monkman A
Publication type: Article
Publication status: Published
Journal: Organic Electronics
ISSN (print): 1566-1199
Publisher: Elsevier BV
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