In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 36, No. 1R ( 1997-01-01), p. 350-
Abstract:
The effects of several surface treatment techniques for indium-tin-oxide (ITO) substrates on the surface properties and the initial nucleation processes of trisphenyldiamine (TPD) have been investigated. Mechanical rubbing, HCl treatment, and O 2 -plasma irradiation smoothen the ITO surface and enhance the cohesion of TPD molecules. As-received ITO surfaces promote amorphous structure of the TPD molecules; this results in effective carrier transport, but the substrate surface is too rough on a molecular scale for the fabrication of very thin ( e.g., ≤200 Å) layered structures. Layer-by-layer amorphous nucleation on flat surfaces is a key technology for the fabrication of future organic electroluminescence (EL) device structures with very thin constituent layers. O 2 -plasma treatment reduces the potential barrier for hole injection from ITO to TPD with moderate cohesion of TPD molecules, and results in brighter EL devices than those on as-received ITO substrates.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1997
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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