ORGANIC ELECTROLUMINESCENT ELEMENT
PROBLEM TO BE SOLVED: To contain a hole in a luminescent layer and improve efficiency of re-coupling with an electron by providing a hole transportation preventing layer on a negative electrode side of the luminescent layer. SOLUTION: In this organic EL element, preferably, an electron transportatio...
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| creator | ONISHI TAKAHITO TOSHIMA NAOKI |
| description | PROBLEM TO BE SOLVED: To contain a hole in a luminescent layer and improve efficiency of re-coupling with an electron by providing a hole transportation preventing layer on a negative electrode side of the luminescent layer. SOLUTION: In this organic EL element, preferably, an electron transportation layer is provided on a negative electrode side of a hole transportation preventing layer, and energy difference between a HOMO level of a luminescent layer and a HOMO level of a hole transportation preventing layer is more than 0.3 eV. Preferably, in this organic EL element, an electron transportation laminated layer film or a hole transportation laminated layer film is used as the electron transportation layer or the hole transportation layer, the electron transportation laminated layer film and the hole transportation laminated layer film are respectively a laminated layer film of various electron transportation materials and a laminated layer film of various hole transportation materials, and the laminated layer films are laminated in the order of oxidation voltage or reduction voltage of molecules constituting the films. Thus, effect of re-coupling with an electron is improved to provide high efficiency light emission, and high luminance can be realized by low voltage drive. |
| format | Patent |
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SOLUTION: In this organic EL element, preferably, an electron transportation layer is provided on a negative electrode side of a hole transportation preventing layer, and energy difference between a HOMO level of a luminescent layer and a HOMO level of a hole transportation preventing layer is more than 0.3 eV. Preferably, in this organic EL element, an electron transportation laminated layer film or a hole transportation laminated layer film is used as the electron transportation layer or the hole transportation layer, the electron transportation laminated layer film and the hole transportation laminated layer film are respectively a laminated layer film of various electron transportation materials and a laminated layer film of various hole transportation materials, and the laminated layer films are laminated in the order of oxidation voltage or reduction voltage of molecules constituting the films. Thus, effect of re-coupling with an electron is improved to provide high efficiency light emission, and high luminance can be realized by low voltage drive.</description><edition>7</edition><language>eng</language><subject>ADHESIVES ; BASIC ELECTRIC ELEMENTS ; CHEMISTRY ; DYES ; ELECTRIC HEATING ; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NATURAL RESINS ; PAINTS ; POLISHES ; SEMICONDUCTOR DEVICES</subject><creationdate>2000</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20001102&DB=EPODOC&CC=JP&NR=2000306676A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20001102&DB=EPODOC&CC=JP&NR=2000306676A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ONISHI TAKAHITO</creatorcontrib><creatorcontrib>TOSHIMA NAOKI</creatorcontrib><title>ORGANIC ELECTROLUMINESCENT ELEMENT</title><description>PROBLEM TO BE SOLVED: To contain a hole in a luminescent layer and improve efficiency of re-coupling with an electron by providing a hole transportation preventing layer on a negative electrode side of the luminescent layer. SOLUTION: In this organic EL element, preferably, an electron transportation layer is provided on a negative electrode side of a hole transportation preventing layer, and energy difference between a HOMO level of a luminescent layer and a HOMO level of a hole transportation preventing layer is more than 0.3 eV. Preferably, in this organic EL element, an electron transportation laminated layer film or a hole transportation laminated layer film is used as the electron transportation layer or the hole transportation layer, the electron transportation laminated layer film and the hole transportation laminated layer film are respectively a laminated layer film of various electron transportation materials and a laminated layer film of various hole transportation materials, and the laminated layer films are laminated in the order of oxidation voltage or reduction voltage of molecules constituting the films. Thus, effect of re-coupling with an electron is improved to provide high efficiency light emission, and high luminance can be realized by low voltage drive.</description><subject>ADHESIVES</subject><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CHEMISTRY</subject><subject>DYES</subject><subject>ELECTRIC HEATING</subject><subject>ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRICITY</subject><subject>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</subject><subject>METALLURGY</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NATURAL RESINS</subject><subject>PAINTS</subject><subject>POLISHES</subject><subject>SEMICONDUCTOR DEVICES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2000</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFDyD3J39PN0VnD1cXUOCfL3CfX19HMNdnb1CwEJ-QJpHgbWtMSc4lReKM3NoOTmGuLsoZtakB-fWlyQmJyal1oS7xVgZGBgYGxgZmZu5mhMlCIAlAkjGw</recordid><startdate>20001102</startdate><enddate>20001102</enddate><creator>ONISHI TAKAHITO</creator><creator>TOSHIMA NAOKI</creator><scope>EVB</scope></search><sort><creationdate>20001102</creationdate><title>ORGANIC ELECTROLUMINESCENT ELEMENT</title><author>ONISHI TAKAHITO ; TOSHIMA NAOKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2000306676A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2000</creationdate><topic>ADHESIVES</topic><topic>BASIC ELECTRIC ELEMENTS</topic><topic>CHEMISTRY</topic><topic>DYES</topic><topic>ELECTRIC HEATING</topic><topic>ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRICITY</topic><topic>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</topic><topic>METALLURGY</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NATURAL RESINS</topic><topic>PAINTS</topic><topic>POLISHES</topic><topic>SEMICONDUCTOR DEVICES</topic><toplevel>online_resources</toplevel><creatorcontrib>ONISHI TAKAHITO</creatorcontrib><creatorcontrib>TOSHIMA NAOKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ONISHI TAKAHITO</au><au>TOSHIMA NAOKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>ORGANIC ELECTROLUMINESCENT ELEMENT</title><date>2000-11-02</date><risdate>2000</risdate><abstract>PROBLEM TO BE SOLVED: To contain a hole in a luminescent layer and improve efficiency of re-coupling with an electron by providing a hole transportation preventing layer on a negative electrode side of the luminescent layer. SOLUTION: In this organic EL element, preferably, an electron transportation layer is provided on a negative electrode side of a hole transportation preventing layer, and energy difference between a HOMO level of a luminescent layer and a HOMO level of a hole transportation preventing layer is more than 0.3 eV. Preferably, in this organic EL element, an electron transportation laminated layer film or a hole transportation laminated layer film is used as the electron transportation layer or the hole transportation layer, the electron transportation laminated layer film and the hole transportation laminated layer film are respectively a laminated layer film of various electron transportation materials and a laminated layer film of various hole transportation materials, and the laminated layer films are laminated in the order of oxidation voltage or reduction voltage of molecules constituting the films. Thus, effect of re-coupling with an electron is improved to provide high efficiency light emission, and high luminance can be realized by low voltage drive.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES BASIC ELECTRIC ELEMENTS CHEMISTRY DYES ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES SEMICONDUCTOR DEVICES |
| title | ORGANIC ELECTROLUMINESCENT ELEMENT |
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