US4819057A
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Semiconductor light-emitting element
Assignee: Toshiba Corp
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Filing: 1986-09-25
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Granted: 1989-04-04
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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, and an organic Langmuir-Blodgett thin film formed on the semiconductor layer. The thin film 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 of metallic material is formed on the thin film.
Inventors
- 👤 Katsuyuki Naito
- 👤 Masayoshi Okamoto
- 👤 Koichi Mizushima
- 👤 Toshio Nakayama
- 👤 Masami Sugiuchi
- 👤 Akira Miura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:05
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/052; H10K; H10K50/00; H10K50/10; H10K50/11; 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
107 words
An element according to claim 1, wherein the electron donative organic monomolecular compound is a hydrazone compound defined by the general formula: ##STR28## where each of R 1 to R 4 is independently a substituted or unsubstituted heterocyclic group, an aryl group, an aralkyl group, an alkyl group, or a hydrogen atom; in which R 1 and R 2 , or R 3 and R 4 on the same atom may constitute a ring; R 1 and R 2 , or R 3 and R 4 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
48 words
An element according to claim 1, wherein the electron donative organic monomolecular compound is a pyrazoline compound defined by: ##STR29## where each of R 5 to R 8 is independently a hydrogen atom or an organic group and R 5 to R 8 are not simultaneously hydrogen atoms.
Claim 5
Dependent Claim
36 words
An element according to claim 1, wherein the electron donative organic monomolecular compound is an oxazole compound defined by: ##STR30## wherein each of R 9 to R 11 is independently a substituted or unsubstituted hydrocarbon group.
Claim 6
Dependent Claim
36 words
An element according to claim 1, wherein the electron donative organic monomolecular compound is an oxydiazole compound defined by: ##STR31## where each of R 12 or R 13 is independently a substituted or unsubstituted hydrocarbon group.
Claim 7
Dependent Claim
53 words
An element according to claim 1, wherein the electron donative organic monomolecular compound is a carbazole compound defined by: ##STR32## where each of R 14 and R 15 is independently a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; and R 16 is a substituted or unsubstituted hydrocarbon group.
Claim 8
Dependent Claim
40 words
An element according to claim 1, wherein the electron donative organic monomolecular compound is a tetrathiafulvalene compound defined by: ##STR33## where each of R 17 to R 20 is independently a hydrogen atom or a substituted or unsubstituted hydrocarbon group.
Claim 9
Dependent Claim
47 words
An element according to claim 1, wherein the electron donative organic monomolecular compound is a naphthylamine compound defined by: ##STR34## where each of R 21 and R 22 is independently a substituted or unsubstituted hydrocarbon group; x is 0 to 4; and y is 0 to 3.
Claim 10
Dependent Claim
59 words
An element according to claim 1, wherein the electron donative organic monomolecular compound is an indole compound defined by: ##STR35## where R 23 is a hydroxyl group, an amino group, or a carboxyl group; each of R 24 and R 25 is independently a hydrogen atom or a substituted or unsubstituted hydrocarbon group; and x is 0 to 4.
Claim 11
Dependent Claim
40 words
An element according to claim 1, wherein the electron donative organic monomolecular compound is a triphenylmethane compound defined by: ##STR36## where each of R 27 to R 29 is independently an amino group or a substituted or unsubstituted hydrocarbon group.
Claim 12
Dependent Claim
60 words
An element according to claim 1, wherein the electron donative organic monomolecular compound is a merocyanine compound defined by: ##STR37## where each of R 30 and R 31 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
60 words
An element according to claim 2, wherein the hydrazone compound is defined by: ##STR38## where R is a lower alkyl group; each of R 1 and R 2 is independently a hydrogen atom, a lower alkyl group, an aryl group or a heterocyclic group; and R 4 is a hydrogen atom, a lower alkyl group or a di(lower alkyl)aminophenyl group.
Claim 14
Dependent Claim
59 words
An element according to claim 2, wherein the hydrazone compound is defined by: ##STR39## where R is a lower alkyl group; each of R 1 and R 2 is independently a hydrogen atom, a lower alkyl group, an aryl group, an aralkyl group, or a heterocyclic group; and R 4 is a hydrogen atom or a lower alkyl group.
Claim 15
Dependent Claim
25 words
An element according to claim 2, wherein the hydrazone compound is defined by: ##STR40## where R 3 is an aryl group or a heterocyclic group.
Claim 16
Dependent Claim
56 words
An element according to claim 2, wherein the hydrazone compound is defined by: ##STR41## 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 R 1 and R 2 is independently a lower alkyl group, an aralkyl group or a heterocyclic group.
Claim 17
Dependent Claim
46 words
An element according to claim 2, wherein the hydrazone compound is defined by: ##STR42## where R is a hydrogen atom or a di(lower alkyl)amino group; and each of R 1 and R 2 is independently a lower alkyl group, an aryl group, or a heterocyclic group.
Claim 18
Dependent Claim
14 words
An element according to claim 2, wherein the hydrazone compound is defined by: ##STR43##
Claim 19
Dependent Claim
26 words
An element according to claim 2, wherein the hydrazone compound is defined by: ##STR44## 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, wherein the pyrazoline compound is defined by: ##STR45## where R is a lower alkoxy group or a di(lower alkyl)amino group; R 5 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
54 words
An element according to claim 3, wherein the pyrazoline compound is defined by: ##STR46## where R is a lower alkoxy group or a di(lower alkyl)amino group; R 5 is a lower alkyl group or an aryl group; and R* is 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, wherein each of R 9 to R 11 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, wherein each of R 12 and R 13 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
28 words
An element according to claim 6, wherein R 16 is a hydrogen atom, a lower alkyl group, an amino lower alkyl group, or a hydroxy lower alkyl group.
Claim 25
Dependent Claim
51 words
An element according to claim 7, wherein each of R 17 to R 20 is independently a hydrogen atom, a C 1 -C 20 alkyl group, an amino C 1 -C 20 alkyl group, a hydroxy C 1 -C 20 alkyl group, or a carboxy C 1 -C 20 alkyl group.
Claim 26
Dependent Claim
33 words
An element according to claim 8, wherein each of R 21 and R 22 is independently phenylazo group, a C 1 -C 20 alkylphenylazo group, or a C 1 -C 20 alkyloxyazo group.
Claim 27
Dependent Claim
50 words
An element according to claim 9, wherein R 24 is a hydrogen atom or a lower alkyl group; and each of R 25 and R 26 is independently a C 1 -C 20 alkyl group, a C 1 -C 20 alkylphenyl group, or a C 1 -C 20 alkyloxyphenyl group.
Claim 28
Dependent Claim
31 words
An element according to claim 10, wherein each of R 27 to R 29 is independently a C 1 -C 20 alkylamino group, or a C 1 -C 20 alkyl group.
Claim 29
Dependent Claim
31 words
An element according to claim 11, wherein each of R 30 and R 31 is independently a C 1 -C 20 alkyl group; and Y is an oxygen or sulfur atom.
Claim 30
Dependent Claim
25 words
An element according to claim 1, wherein the organic material contains a Langmuir-Blodgett film forming compound in addition to the electron donative organic monomolecular compound.
References Cited (Backward Citations)
US4757364A
Cited
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