Organic light-emitting device having high luminescent efficiency
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United States of America Patent
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Issued Date -
Dec 9, 2004
app pub date -
Apr 22, 2004
filing date -
Nov 12, 2001
priority date (Note) -
Abandoned
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Abstract
An organic light-emitting device (OLED) having high luminescent efficiency in which most electrons and holes are combined within a light-emitting layer of the OLED is disclosed. The OLED comprises a first electrode formed on a substrate, at least one organic layer including an organic light-emitting layer, a second electrode formed on the organic layer, a hole inducing layer including a material having an ionization potential higher than that of the organic light-emitting layer and formed between the first electrode and the organic light-emitting layer and/or an electron blocking layer including a material having an electron affinity higher than that of the organic light-emitting layer and formed between the second electrode and the organic light-emitting layer.
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