期刊
AIP ADVANCES
卷 5, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4928515
关键词
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资金
- Japan Society for the Promotion of Science (JSPS) through the Funding Pro-gram for World-Leading Innovative R&D on Science and Technology (FIRST Program)
- Council for Science and Technology Policy (CSTP)
- Grants-in-Aid for Scientific Research [26708010, 26620165] Funding Source: KAKEN
Liquid organic light-emitting diodes (liquid OLEDs) are unique devices consisting only of liquid organic semiconductors in the active layer, and the device performances have been investigated recently. However, the device degradation, especially, the origin has been unknown. In this study, we show that material degradation occurs in liquid OLEDs, whose active layer is composed of carbazole with an ethylene glycol chain. Nuclear magnetic resonance (NMR) experiments clearly exhibit that the dimerization reaction of carbazole moiety occurs in the liquid OLEDs during driving the devices. In contrast, cleavages of the ethylene glycol chain are not detected within experimental error. The dimerization reaction is considered to be related to the device degradation. (C) 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
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