Material for organic electroluminescent element and organic electroluminescent element in which same is used
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United States of America Patent
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Oct 20, 2020
Grant Date -
Feb 1, 2018
app pub date -
Mar 8, 2016
filing date -
Mar 30, 2015
priority date (Note) -
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Abstract
Provided are an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple construction, and a material for an organic EL device to be used in the device. The material for an organic EL device includes a carborane compound represented by the general formula (1), and the carborane compound has a structure in which a six-membered ring group containing at least two nitrogen atoms is bonded to a carborane ring. The material for an organic EL device is suitable as a host material for a light-emitting layer containing a phosphorescent light-emitting dopant and the host material, or as a material for a hole-blocking layer. In the formula, rings A's each represent a divalent carborane group represented by the formula (1a) or the formula (1b), and two or more of X's each represent N.
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