LIGHT-EMITTING DEVICE AND METHOD OF MANUFACTURING THE SAME

• Main Authors: KOBAYASHI SATOSHI, AKINO YOSHIHIKO, ZUBERI SHEENA, IIJIMA TAKAYUKI, TANAKA MASANOBU
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a light-emitting device using a novel compound that is a strong n-type doping material; and a method of manufacturing the light-emitting device.SOLUTION: A light-emitting device includes a positive pole, a luminous layer, an electron transport layer, and a negative pole. The electron transport layer contains at least one kind of electron transport materials whose LUMO level is -3.0 eV or more, and at least one kind of dopant materials selected from the group consisting of heterocyclic compounds whose SOMO level is from -2.2 to -1.5 eV and derivatives thereof. The LUMO level of the electron transport material is smaller than the SOMO level of the heterocyclic compound.SELECTED DRAWING: None 【課題】強力なｎ型ドーピング材料である新規化合物を利用した発光素子、及びその製造方法を提供すること。【解決手段】陽極、発光層、電子輸送層及び陰極を有し、電子輸送層が、ＬＵＭＯ準位が−３．０ｅＶ以上の少なくとも１種の電子輸送性材料と、ＳＯＭＯ準位が−２．２〜−１．５ｅＶの複素環式化合物及びその誘導体からなる群より選択される少なくとも１種のドーパント材料と、を含有し、電子輸送性材料のＬＵＭＯ準位が、複素環式化合物のＳＯＭＯ準位より小さい、発光素子。【選択図】なし