JPH05343184

PURPOSE:To provide a light emitting element having a high luminance and a long life, and emitting pure blue light by successively laminating a positive electrode, a hole injecting layer consisting of a specified polysilane, a light emitting layer consisting of a specified benzoxazole compound, and a...

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Bibliographic Details
Main Author KIN ISHI
Format Patent
LanguageEnglish
Published 24.12.1993
Edition5
Subjects
ADHESIVES
ADVERTISING
BASIC ELECTRIC ELEMENTS
CHEMISTRY
CRYPTOGRAPHY
DISPLAY
DISPLAYING
DYES
EDUCATION
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
LABELS OR NAME-PLATES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PHYSICS
POLISHES
SEALS
SEMICONDUCTOR DEVICES
SIGNS
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Summary:PURPOSE:To provide a light emitting element having a high luminance and a long life, and emitting pure blue light by successively laminating a positive electrode, a hole injecting layer consisting of a specified polysilane, a light emitting layer consisting of a specified benzoxazole compound, and a negative electrode. CONSTITUTION:On a transparent glass base, a positive electrode consisting of a transparent conductive film such as ITO is laminated, and a polysilane represented by the formula I is laminated thereon by spin coating to form a hole injecting layer. A benzoxazole compound represented by the formula II is laminated thereon by vacuum evaporation to form a light emitting layer. Further, a negative electrode consisting of a Mg.Ag thin film is formed thereon to form an organic electroluminescent element. In the formulae I, II, R1-R12, which may be the same or different, represent hydrogen atoms (excluding R1, R2), C1-C10 alkyl groups, C6-C10 aryl groups, or halogen atoms (excluding R1, R2, R11, R12), and n is an integer of 100-10000.
Bibliography:Application Number: JP19920173666