JP2005101601A - 半導体ナノ結晶の表面処理による量子効率の向上 - Google Patents
半導体ナノ結晶の表面処理による量子効率の向上 Download PDFInfo
- Publication number
- JP2005101601A JP2005101601A JP2004262380A JP2004262380A JP2005101601A JP 2005101601 A JP2005101601 A JP 2005101601A JP 2004262380 A JP2004262380 A JP 2004262380A JP 2004262380 A JP2004262380 A JP 2004262380A JP 2005101601 A JP2005101601 A JP 2005101601A
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- Prior art keywords
- nanocrystal
- acid
- carbon atoms
- semiconductor nanocrystal
- reducing agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000004054 semiconductor nanocrystal Substances 0.000 title claims abstract description 32
- 238000004381 surface treatment Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 44
- 239000000126 substance Substances 0.000 claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 239000002159 nanocrystal Substances 0.000 claims description 32
- 239000010410 layer Substances 0.000 claims description 31
- 239000002904 solvent Substances 0.000 claims description 19
- 125000004432 carbon atom Chemical group C* 0.000 claims description 15
- -1 hydride ion Chemical class 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 238000001308 synthesis method Methods 0.000 claims description 8
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 claims description 7
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 6
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 6
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 6
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000005642 Oleic acid Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 6
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 4
- 150000003973 alkyl amines Chemical class 0.000 claims description 4
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 4
- 229910004613 CdTe Inorganic materials 0.000 claims description 3
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- FJLUATLTXUNBOT-UHFFFAOYSA-N 1-Hexadecylamine Chemical compound CCCCCCCCCCCCCCCCN FJLUATLTXUNBOT-UHFFFAOYSA-N 0.000 claims description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 2
- 229910002601 GaN Inorganic materials 0.000 claims description 2
- 229910005540 GaP Inorganic materials 0.000 claims description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 2
- 229910004262 HgTe Inorganic materials 0.000 claims description 2
- 229910000673 Indium arsenide Inorganic materials 0.000 claims description 2
- 239000012448 Lithium borohydride Substances 0.000 claims description 2
- 235000021314 Palmitic acid Nutrition 0.000 claims description 2
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- 229910007709 ZnTe Inorganic materials 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 2
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000012280 lithium aluminium hydride Substances 0.000 claims description 2
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- FTMKAMVLFVRZQX-UHFFFAOYSA-N octadecylphosphonic acid Chemical compound CCCCCCCCCCCCCCCCCCP(O)(O)=O FTMKAMVLFVRZQX-UHFFFAOYSA-N 0.000 claims description 2
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 claims description 2
- NJGCRMAPOWGWMW-UHFFFAOYSA-N octylphosphonic acid Chemical compound CCCCCCCCP(O)(O)=O NJGCRMAPOWGWMW-UHFFFAOYSA-N 0.000 claims description 2
- 235000021313 oleic acid Nutrition 0.000 claims description 2
- 239000012044 organic layer Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 2
- 239000012279 sodium borohydride Substances 0.000 claims description 2
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- BVQJQTMSTANITJ-UHFFFAOYSA-N tetradecylphosphonic acid Chemical compound CCCCCCCCCCCCCCP(O)(O)=O BVQJQTMSTANITJ-UHFFFAOYSA-N 0.000 claims description 2
- GJWAEWLHSDGBGG-UHFFFAOYSA-N hexylphosphonic acid Chemical compound CCCCCCP(O)(O)=O GJWAEWLHSDGBGG-UHFFFAOYSA-N 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 239000002096 quantum dot Substances 0.000 abstract description 33
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- 238000009826 distribution Methods 0.000 description 5
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- XTAZYLNFDRKIHJ-UHFFFAOYSA-N n,n-dioctyloctan-1-amine Chemical compound CCCCCCCCN(CCCCCCCC)CCCCCCCC XTAZYLNFDRKIHJ-UHFFFAOYSA-N 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 4
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- 239000011541 reaction mixture Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- MJNSMKHQBIVKHV-UHFFFAOYSA-N selenium;trioctylphosphane Chemical compound [Se].CCCCCCCCP(CCCCCCCC)CCCCCCCC MJNSMKHQBIVKHV-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Natural products P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 3
- 238000000862 absorption spectrum Methods 0.000 description 3
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 3
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000002194 synthesizing effect Effects 0.000 description 3
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical group NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
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- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
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- 230000005540 biological transmission Effects 0.000 description 2
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- 238000000024 high-resolution transmission electron micrograph Methods 0.000 description 2
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- 230000001681 protective effect Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- NLECPILJYUVNEH-UHFFFAOYSA-N 1-[octoxy(octyl)phosphoryl]oxyoctane Chemical group CCCCCCCCOP(=O)(CCCCCCCC)OCCCCCCCC NLECPILJYUVNEH-UHFFFAOYSA-N 0.000 description 1
- GKWLILHTTGWKLQ-UHFFFAOYSA-N 2,3-dihydrothieno[3,4-b][1,4]dioxine Chemical compound O1CCOC2=CSC=C21 GKWLILHTTGWKLQ-UHFFFAOYSA-N 0.000 description 1
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- LHQLJMJLROMYRN-UHFFFAOYSA-L cadmium acetate Chemical compound [Cd+2].CC([O-])=O.CC([O-])=O LHQLJMJLROMYRN-UHFFFAOYSA-L 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
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- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical group CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
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- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B19/00—Selenium; Tellurium; Compounds thereof
- C01B19/007—Tellurides or selenides of metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82B—NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF
- B82B3/00—Manufacture or treatment of nanostructures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/10—Compounds of cadmium
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/10—Compounds of cadmium
- C09C1/12—Cadmium sulfoselenide
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/38—Compounds of mercury
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/56—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing sulfur
- C09K11/562—Chalcogenides
- C09K11/565—Chalcogenides with zinc cadmium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/88—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
- C09K11/881—Chalcogenides
- C09K11/883—Chalcogenides with zinc or cadmium
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/60—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape
- C30B29/605—Products containing multiple oriented crystallites, e.g. columnar crystallites
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
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- C—CHEMISTRY; METALLURGY
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Abstract
【解決手段】 化学的湿式合成法によって形成された半導体ナノ結晶を還元剤で表面処理して量子効率を向上させる。
【選択図】 図1
Description
この際、分散溶媒は、半導体ナノ結晶の表面に配位することが可能でなければならず、ある程度のバルキネス(bulkiness)を持つことにより、結晶の成長速度が調節可能でなければならず、また、結晶成長温度で安定し、ナノ結晶と配位された状態でナノ結晶を分散させることが可能でなければならないという特性を有する。
[実施例1]:CdSナノ結晶の合成及び表面処理
トリオクチルアミン(以下「TOA」という)16g、オレイン酸1.9g、及びカドミウムオキサイド1.6mmolを、同時に125mlの還流凝縮器付フラスコに入れ、攪拌しながら温度を300°Cに昇温した。
TOA16g、オレイン酸0.5g、及びカドミウムアセテート0.2mmolを、同時に125mlの還流凝縮器付フラスコに入れ、攪拌しながら温度を180℃に昇温した。これとは別に、Te粉末をTOPに溶かしてTe濃度0.2M程度のTe−TOP錯体溶液を作った。
TOA16g、オレイン酸0.5g、及びカドミウムオキサイド0.4mmolを、同時に125mlの還流凝縮器付フラスコに入れ、攪拌しながら温度を300℃に昇温した。これとは別に、Se粉末をTOPに溶かしてSe濃度0.25M程度のSe−TOP錯体溶液を作り、S粉末をTOPに溶かしてS濃度1.0M程度のS−TOP錯体溶液を作った。
TOA16g、オレイン酸0.5g、及びカドミウムオキサイド0.4mmolを、同時に125mlの還流凝縮器付フラスコに入れ、攪拌しながら温度を300℃に昇温した。これとは別に、Se粉末をTOPに溶かしてSe濃度1M程度のSe−TOP錯体溶液を作った。
パターニングされているITO基板の上部に正孔伝達層としてPEDOT(Poly-3,4-Ethylenedioxythiophene)を、50nmの厚さにスピンコーティングして110℃で10分間熱処理し、その後、表面処理したCdSe濃度1重量%で製造されたクロロベンゼン溶液をスピンコーティングした後、これを乾燥させて厚さ10nmの発光層を形成した。
Claims (16)
- 半導体ナノ結晶を還元剤で表面処理して半導体ナノ結晶の量子効率を向上させる方法。
- 前記半導体ナノ結晶が化学的湿式合成法によって形成されることを特徴とする請求項1に記載の方法 。
- 前記半導体ナノ結晶がCdS、CdSe、CdTe、ZnS、ZnSe、ZnTe、HgS、HgSe、HgTe、GaN、GaP、GaAs、InP及びInAsよりなる群から選択された少なくとも1種以上の物質で構成されたコア・シェル、合金型または変化(gradient)構造であることを特徴とする請求項1に記載の方法。
- 前記還元剤としては、ヒドリドイオン(H-)を形成することが可能な塩、有機還元剤、還元性ガスまたは前記還元性ガスを溶かした溶液を使用することを特徴とする請求項1に記載の方法。
- ナノ結晶の表面が、有機分散剤によって配位され、分散剤と親和力のある溶媒にナノ結晶が分散された状態で、還元処理または酸化処理されることを特徴とする請求項1に記載の方法。
- 前記分散剤が、炭素数2〜18のアルキルカルボン酸、炭素数2〜18のアルケニルカルボン酸、炭素数2〜18のアルキルスルホン酸、炭素数2〜18のアルケニルスルホン酸、炭素数2〜18のホスホン酸、炭素数2〜18のアルキルアミン、及び炭素数2〜18のアルケニルアミンよりなる群から選択された少なくとも1種以上の物質であることを特徴とする請求項4に記載の方法。
- 前記分散剤が、オレイン酸、ステアリン酸、パルミチン酸、ヘキシルホスホン酸、n−オクチルホスホン酸、テトラデシルホスホン酸、オクタデシルホスホン酸、n−オクチルアミン及びヘキサデシルアミンよりなる群から選択された少なくとも1種以上の物質であることを特徴とする請求項5に記載の方法。
- 前記ナノ結晶と、還元剤の重量比が、1:10乃至10:1であることを特徴とする請求項1に記載の方法。
- 前記ナノ結晶の表面処理が、0〜100℃の温度範囲で行われることを特徴とする請求項1に記載の方法。
- 前記ナノ結晶の表面処理が1秒〜2日間行われることを特徴とする請求項1に記載の方法。
- 前記ナノ結晶が球形、棒形、トライポッド形、テトラポッド形、立方体形、ボックス形、星形であることを特徴とする請求項1に記載の方法。
- 前記ナノ結晶の大きさが1乃至50nmであることを特徴とする請求項1に記載の方法。
- 請求項1に記載の方法によって形成された半導体ナノ結晶。
- 多数の有機層及び無機層からなる電気発光素子において、発光層が、請求項12に記載の半導体ナノ結晶を含むことを特徴とする有機電気発光素子。
- 化学的に還元処理または酸化処理された表面を持つことを特徴とする半導体ナノ結晶。
- 前記還元性ガスが、水素化ホウ素ナトリウム、水素化ホウ素リチウム、水素化アルミニウムリチウム、ヒドラジン、水素、硫化水素、アンモニア、またはこれらの組み合わせであることを特徴とする請求項4に記載の方法。
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- 2004-08-26 EP EP10185929.6A patent/EP2284296B1/en not_active Expired - Lifetime
- 2004-09-09 CN CNA200410078547XA patent/CN1595673A/zh active Pending
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JP2010508620A (ja) * | 2006-09-12 | 2010-03-18 | キユーデイー・ビジヨン・インコーポレーテツド | 所定のパターンを表示するために有用なエレクトロルミネセントディスプレイ |
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EP1516944B1 (en) | 2011-12-21 |
EP1516944A1 (en) | 2005-03-23 |
JP4928071B2 (ja) | 2012-05-09 |
CN1595673A (zh) | 2005-03-16 |
CN101974335B (zh) | 2013-11-13 |
EP2284296B1 (en) | 2016-05-18 |
CN101974335A (zh) | 2011-02-16 |
US7288468B2 (en) | 2007-10-30 |
EP2284296A1 (en) | 2011-02-16 |
US20050051769A1 (en) | 2005-03-10 |
KR100796122B1 (ko) | 2008-01-21 |
KR20050026227A (ko) | 2005-03-15 |
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