Efficient electron injection from solution-processed cesium stearate interlayers in organic light-emitting diodes

The electron-injection capability of solution-processed cesium stearate films in organic light-emitting diodes is investigated. Cesium stearate, which is expected to exhibit good solubility and film formation due to its long hydrocarbon chain, is synthesized using a straightforward procedure. Light-...

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Bibliographic Details
Published in:	Applied physics letters Vol. 102; no. 5
Main Authors:	Wetzelaer, G. A. H., Najafi, A., Kist, R. J. P., Kuik, M., Blom, P. W. M.
Format:	Journal Article
Language:	English
Published:	04-02-2013
Subjects:	Cesium Color Deposition Devices Ethyl alcohol Light-emitting diodes Solubility Stearates
Online Access:	Get full text
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Summary:	The electron-injection capability of solution-processed cesium stearate films in organic light-emitting diodes is investigated. Cesium stearate, which is expected to exhibit good solubility and film formation due to its long hydrocarbon chain, is synthesized using a straightforward procedure. Light-emitting diodes are fabricated using orange-, yellow-, and blue-emitting conjugated polymers, comprising a cesium stearate electron-injection layer deposited from ethanol solution. It is demonstrated that these devices perform as well as benchmark devices using vacuum-deposited barium as electron-injection layer, without loss of color purity.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.4790592