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EP0218422A2
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Semiconductor light-emitting element
Assignee: Toshiba Corp
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Filing: 1986-09-25
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Granted: —
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Expires: 2006-09-25
Abstract
Abstract A semiconductor light-emitting element of a metal/organic film/semiconductor junction structure has a semiconductor layer (11), and an organic Langmuir-Blodgett thin film (13) formed on the semiconductor layer. The thin film (13) includes an electron donative organic monomolecular compound whose longest absorption peak wavelength in an electron transition spectrum falls within a range of 300 nm to 600 nm. A layer (14) of metallic material is formed on the thin film.
Inventors
- 👤 Katsuyuki Patent Division K.K. Toshiba Naito
- 👤 Masayoshi Patent Division K.K. Toshiba Okamoto
- 👤 Koichi Patent Division K.K. Toshiba Mizushima
- 👤 Toshio Patent Division K.K. Toshiba Nakayama
- 👤 Masami Patent Division K.K. Toshiba Sugiuchi
- 👤 Akira Patent Division K.K. Toshiba Miura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 19:20
CPC Classifications
H; H10; H10K; H10K50/00; H10K50/10; H10K50/11; H10H; H10H20/00; H10H20/052; H10K85/00; H10K85/60; H10K85/631; H10K85/636; H10K85/701; H10K85/615; H10K85/649; H10K85/653; H10K85/654; H10K85/655; H10K85/657; H10K85/6572
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
66 words
A semiconductor light-emitting element of a metal/organic film/semiconductor junction structure, comprising: (a) a semiconductor layer; (b) an organic Langmuir-Blodgett thin film formed on the semiconductor layer and comprising an electron donative organic monomolecular compound whose longest absorption peak wavelength in an electron transition spectrum falls within a range of 300 nm to 600 nm; and (c) a layer of metallic material formed on the thin film.
Claim 2
Dependent Claim
66 words
A semiconductor light-emitting element of a metal/organic film/semiconductor junction structure, comprising: (a) a semiconductor layer; (b) an organic Langmuir-Blodgett thin film formed on the semiconductor layer and comprising an electron donative organic monomolecular compound whose longest absorption peak wavelength in an electron transition spectrum falls within a range of 300 nm to 600 nm; and (c) a layer of metallic material formed on the thin film.
Claim 3
Dependent Claim
96 words
An element according to claim 1, characterized in that the electron donative organic monomolecular compound is a hydrazone compound defined by the general formula: where each of R¹ to R⁴ is independently a substituted or unsubstituted heterocyclic group, an aryl group, an aralkyl group, an alkyl group, or a hydrogen atom; in which R¹ and R², or R³ and R⁴ on the same atom may constitute a ring; R¹ and R², or R³ and R⁴ are not simultaneously hydrogen atoms; A is an organic group having a valence of 2; and n is 0 or 1.
Claim 4
Dependent Claim
45 words
An element according to claim 1, characterized in that the electron donative organic monomolecular compound is a pyrazoline compound defined by: where each of R⁵ to R⁸ is independently a hydrogen atom or an organic group and R⁵ to R⁸ are not simultaneously hydrogen atoms.
Claim 5
Dependent Claim
35 words
An element according to claim 1, characterized in that the electron donative organic monomolecular compound is a oxazole compound defined by: wherein each of R⁹ to R¹¹ is independently a substituted or unsubstituted hydrocarbon group.
Claim 6
Dependent Claim
35 words
An element according to claim 1, characterized in that the electron donative organic monomolecular compound is a oxydiazole compound defined by: where each of R¹² or R¹³ is independently a substituted or unsubstituted hydrocarbon group.
Claim 7
Dependent Claim
51 words
An element according to claim 1, characterized in that the electron donative organic monomolecular compound is a carbazole compound defined by: where each of R¹⁴ and R¹⁵ is independently a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; and R¹⁶ is a substituted or unsubstituted hydrocarbon group.
Claim 8
Dependent Claim
39 words
An element according to claim 1, characterized in that the electron donative organic monomolecular compound is a tetrathiafulvalene compound defined by: where each of R¹⁷ and R²⁰ is independently a hydrogen atom or a substituted or unsubstituted hydrocarbon group.
Claim 9
Dependent Claim
46 words
An element according to claim 1, characterized in that the electron donative organic monomolecular compound is a naphthylamine compound defined by: where each of R²¹ and R²² is independently a substituted or unsubstituted hydrocarbon group; x is 0 to 4; and y is 0 to 3.
Claim 10
Dependent Claim
57 words
An element according to claim 1, characterized in that the electron donative organic monomolecular compound is an indole compound defined by: where R²³ is a hydroxyl group, an amino group, or a carboxyl group; each of R²⁴ and R²⁵ is independently a hydrogen atom or a substituted or unsubstituted hydrocarbon group; and x is 0 to 4.
Claim 11
Dependent Claim
39 words
An element according to claim 1, characterized in that the electron donative organic monomolecular compound is a triphenylmethane compound defined by: where each of R²⁷ to R²⁹ is independently an amino group or a substituted or unsubstituted hydrocarbon group.
Claim 12
Dependent Claim
58 words
An element according to claim 1, characterized in that the electron donative organic monomolecular compound is a merocyanine compound defined by: where each of R³⁰ and R³¹ is independently a hydrocarbon having 1 to 20 carbon atoms; X⁻ is an anion; Y is an oxygen atom, a sulfur atom, or selenium atom; and n is 0 or 1.
Claim 13
Dependent Claim
58 words
An element according to claim 2, characterized in that the hydrazone compound is defined by: where R is a lower alkyl group; each of R¹ and R² is independently a hydrogen atom, a lower alkyl group, an aryl group or a heterocyclic group; and R⁴ is a hydrogen atom, a lower alkyl group or a di(lower alkyl)aminophenyl group.
Claim 14
Dependent Claim
57 words
An element according to claim 2, characterized in that the hydrazone compound is defined by: where R is a lower alkyl group; each of R¹ and R² is independently a hydrogen atom, a lower alkyl group, an aryl group, an aralkyl group, or a heterocyclic group; and R⁴ is a hydrogen atom or a lower alkyl group.
Claim 15
Dependent Claim
25 words
An element according to claim 2, characterized in that the hydrazone compound is defined by: where R³ is an aryl group or a heterocyclic group.
Claim 16
Dependent Claim
55 words
An element according to claim 2, characterized in that the hydrazone compound is defined by: where R* is a hydrogen atom or a di(lower alkyl)amino group; R is a hydrogen atom or a lower alkyl group; and each of R¹ and R² is independently a lower alkyl group, an aralkyl group or a heterocyclic group.
Claim 17
Dependent Claim
45 words
An element according to claim 2, characterized in that the hydrazone compound is defined by: where R is a hydrogen atom or a di(lower alkyl)amino group; and each of R¹ and R² is independently a lower alkyl group, an aryl group, or a heterocyclic group.
Claim 18
Dependent Claim
15 words
An element according to claim 2, characterized in that the hydrazone compound is defined by:
Claim 19
Dependent Claim
26 words
An element according to claim 2, characterized in that the hydrazone compound is defined by: where R is a di(lower alkyl)aminophenyl group or a heterocyclic group.
Claim 20
Dependent Claim
53 words
An element according to claim 3, characterized in that the pyrazoline compound is defined by: where R is a lower alkoxy group or a di(lower alkyl)amino group; R⁵ is a lower alkyl group or an aryl group; and R* is a lower alkyl group, a lower alkoxy group, or a di(lower alkyl)amino group.
Claim 21
Dependent Claim
53 words
An element according to claim 3, characterized in that the pyrazoline compound is defined by: where R is a lower alkoxy group or a di(lower alkyl)amino group; R⁵ is a lower alkyl group or an aryl group; and R* is a lower alkyl group, a lower alkoxy group, or a di(lower alkyl)amino group.
Claim 22
Dependent Claim
40 words
An element according to claim 4, characterized in that each of R⁹ to R¹¹ is independently a phenyl group which may be substituted with a halogen atom, a di(lower alkyl)amino group, a di(lower alkoxy)amino group or a lower alkoxy group.
Claim 23
Dependent Claim
34 words
An element according to claim 5, characterized in that each of R¹² and R¹³ is independently a phenyl group substituted with a di(lower alkyl)amino group, a di(lower alkoxy)amino group or a lower alkoxy group.
Claim 24
Dependent Claim
29 words
An element according to claim 6, characterized in that R¹⁶ is a hydrogen atom, a lower alkyl group, an amino lower alkyl group, or a hydroxy lower alkyl group.
Claim 25
Dependent Claim
47 words
An element according to claim 7, characterized in that each of R¹⁷ to R²⁰ is independently a hydrogen atom, a C₁ - C₂₀ alkyl group, an amino C₁ - C₂₀ alkyl group, a hydroxy C₁ - C₂₀ alkyl group, or a carboxy C₁ - C₂₀ alkyl group.
Claim 26
Dependent Claim
31 words
An element according to claim 8, characterized in that each of R²¹ and R²² is independently phenylazo group, a C₁ - C₂₀ alkylphenylazo group, or a C₁ - C₂₀ alkyloxyazo group.
Claim 27
Dependent Claim
46 words
An element according to claim 9, characterized in that R²⁴ is a hydrogen atom or a lower alkyl group; and each of R²⁵ and R²⁶ is independently a C₁ - C₂₀ alkyl group, a C₁ - C₂₀ alkylphenyl group, or a C₁ - C₂₀ alkyloxyphenyl group.
Claim 28
Dependent Claim
28 words
An element according to claim 10, characterized in that each of R²⁷ to R²⁹ is independently a C₁ - C₂₀alkylamino group, or a C₁ - C₂₀ alkyl group.
Claim 29
Dependent Claim
30 words
An element according to claim 11, characterized in that each of R³⁰ and R³¹ is independently a C₁ - C₂₀ alkyl group; and Y is an oxygen or sulfur atom.
Claim 30
Dependent Claim
27 words
An element according to claim 1, characterized in that the organic material contains a Langmuir-Blodgett film forming compound in addition to the electron donative organic monomolecular compound.
References Cited (Backward Citations)
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