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Cesium hydroxide doped tris-(8-hydroxyquinoline) aluminum as an effective electron injection layer in inverted bottom-emission organic light emitting diodes
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/content/aip/journal/apl/92/26/10.1063/1.2955516
2008-07-03
2014-10-26

Abstract

We demonstrate highly efficient inverted bottom-emission organic light-emitting diodes (IBOLEDs) by using cesium hydroxide (CsOH) doped tris-(8-hydroxyquinoline) aluminum as the electron injection layer on indium tin oxide cathode, which could significantly enhance the electron injection, resulting in a large increase in luminance and efficiency. The maximum luminance, current efficiency, and power efficiency reach , , and , respectively, which are 40%–50% higher in efficiency than that of IBOLEDs with cesium carbonate doped as the electron injection layer, where the efficiencies are only and . Our results indicate that CsOH doped should be an effective electron injection layer on a wide range of electrodes to fabricate high performance OLEDs.

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Scitation: Cesium hydroxide doped tris-(8-hydroxyquinoline) aluminum as an effective electron injection layer in inverted bottom-emission organic light emitting diodes
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/26/10.1063/1.2955516
10.1063/1.2955516
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