JP2012131701A - 合金形態の半導体結晶、その製造方法及び有機電界発光素子 - Google Patents
合金形態の半導体結晶、その製造方法及び有機電界発光素子 Download PDFInfo
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- JP2012131701A JP2012131701A JP2012001577A JP2012001577A JP2012131701A JP 2012131701 A JP2012131701 A JP 2012131701A JP 2012001577 A JP2012001577 A JP 2012001577A JP 2012001577 A JP2012001577 A JP 2012001577A JP 2012131701 A JP2012131701 A JP 2012131701A
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- cadmium
- zinc
- precursor solution
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- 239000013078 crystal Substances 0.000 title claims abstract description 56
- 239000004065 semiconductor Substances 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000000956 alloy Substances 0.000 title claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 15
- 239000002243 precursor Substances 0.000 claims abstract description 128
- 229910052751 metal Inorganic materials 0.000 claims abstract description 75
- 239000002184 metal Substances 0.000 claims abstract description 75
- 229910052798 chalcogen Inorganic materials 0.000 claims abstract description 69
- 239000002904 solvent Substances 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 40
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- 238000000295 emission spectrum Methods 0.000 claims abstract description 7
- 150000002739 metals Chemical class 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- 229910052793 cadmium Inorganic materials 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 230000001443 photoexcitation Effects 0.000 claims description 6
- FJLUATLTXUNBOT-UHFFFAOYSA-N 1-Hexadecylamine Chemical compound CCCCCCCCCCCCCCCCN FJLUATLTXUNBOT-UHFFFAOYSA-N 0.000 claims description 5
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 claims description 5
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 claims description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- LHQLJMJLROMYRN-UHFFFAOYSA-L cadmium acetate Chemical compound [Cd+2].CC([O-])=O.CC([O-])=O LHQLJMJLROMYRN-UHFFFAOYSA-L 0.000 claims description 4
- KPWJBEFBFLRCLH-UHFFFAOYSA-L cadmium bromide Chemical compound Br[Cd]Br KPWJBEFBFLRCLH-UHFFFAOYSA-L 0.000 claims description 4
- YKYOUMDCQGMQQO-UHFFFAOYSA-L cadmium dichloride Chemical compound Cl[Cd]Cl YKYOUMDCQGMQQO-UHFFFAOYSA-L 0.000 claims description 4
- OKIIEJOIXGHUKX-UHFFFAOYSA-L cadmium iodide Chemical compound [Cd+2].[I-].[I-] OKIIEJOIXGHUKX-UHFFFAOYSA-L 0.000 claims description 4
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- VNDYJBBGRKZCSX-UHFFFAOYSA-L zinc bromide Chemical compound Br[Zn]Br VNDYJBBGRKZCSX-UHFFFAOYSA-L 0.000 claims description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 4
- BHHYHSUAOQUXJK-UHFFFAOYSA-L zinc fluoride Chemical compound F[Zn]F BHHYHSUAOQUXJK-UHFFFAOYSA-L 0.000 claims description 4
- UAYWVJHJZHQCIE-UHFFFAOYSA-L zinc iodide Chemical compound I[Zn]I UAYWVJHJZHQCIE-UHFFFAOYSA-L 0.000 claims description 4
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 4
- NHXVNEDMKGDNPR-UHFFFAOYSA-N zinc;pentane-2,4-dione Chemical compound [Zn+2].CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O NHXVNEDMKGDNPR-UHFFFAOYSA-N 0.000 claims description 4
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 3
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- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- TZRNHZPZYFPUOH-UHFFFAOYSA-N $l^{1}-selanyl(trimethyl)silane Chemical compound C[Si](C)(C)[Se] TZRNHZPZYFPUOH-UHFFFAOYSA-N 0.000 claims description 2
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 claims description 2
- IGPFOKFDBICQMC-UHFFFAOYSA-N 3-phenylmethoxyaniline Chemical compound NC1=CC=CC(OCC=2C=CC=CC=2)=C1 IGPFOKFDBICQMC-UHFFFAOYSA-N 0.000 claims description 2
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- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 claims description 2
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- PSIBWKDABMPMJN-UHFFFAOYSA-L cadmium(2+);diperchlorate Chemical compound [Cd+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O PSIBWKDABMPMJN-UHFFFAOYSA-L 0.000 claims description 2
- GJWAEWLHSDGBGG-UHFFFAOYSA-N hexylphosphonic acid Chemical compound CCCCCCP(O)(O)=O GJWAEWLHSDGBGG-UHFFFAOYSA-N 0.000 claims description 2
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- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- CCCMONHAUSKTEQ-UHFFFAOYSA-N octadecene Natural products CCCCCCCCCCCCCCCCC=C CCCMONHAUSKTEQ-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
- 239000012044 organic layer Substances 0.000 claims description 2
- NMHMNPHRMNGLLB-UHFFFAOYSA-N phloretic acid Chemical compound OC(=O)CCC1=CC=C(O)C=C1 NMHMNPHRMNGLLB-UHFFFAOYSA-N 0.000 claims description 2
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- GTLDTDOJJJZVBW-UHFFFAOYSA-N zinc cyanide Chemical compound [Zn+2].N#[C-].N#[C-] GTLDTDOJJJZVBW-UHFFFAOYSA-N 0.000 claims description 2
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- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- RMZAYIKUYWXQPB-UHFFFAOYSA-N trioctylphosphane Chemical compound CCCCCCCCP(CCCCCCCC)CCCCCCCC RMZAYIKUYWXQPB-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- RXBXBWBHKPGHIB-UHFFFAOYSA-L zinc;diperchlorate Chemical compound [Zn+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O RXBXBWBHKPGHIB-UHFFFAOYSA-L 0.000 description 1
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Abstract
【解決手段】 本発明に係る半導体結晶の製造方法は、(a)1種以上の12族金属前駆体を分散剤及び溶媒と混合し、これを加熱して12族金属前駆体溶液を得る段階と、(b)1種以上の16族元素前駆体をこれと配位可能な溶媒に溶解して16族元素前駆体溶液を得る段階と、(c)前記1種以上の12族金属前駆体溶液と1種以上の16族元素前駆体溶液とを混合して反応させた後、結晶を成長させる段階と、を含み、前記結晶のサイズ分布を表す光励起発光スペクトルの半値幅が50nm以下、かつ、発光効率が30%以上であり、前記12族金属前駆体溶液、及び前記16族元素前駆体溶液の濃度は0.001Mないし2Mであり、前記(a)段階において、加熱が100ないし400℃であり、前記(c)段階において、反応温度は50℃ないし400℃であることを特徴とする。
【選択図】図1
Description
まず、1種以上の12族金属または1種以上の12族金属前駆体を分散剤及び溶媒と混合し、これを所定温度範囲となるように加熱して12族金属前駆体溶液を得る。
前記12族金属前駆体溶液の濃度は0.001ないし2Mであり、望ましくは0.005ないし0.5Mであり、さらに望ましくは0.01ないし0.1Mである。
前記16族元素としては、硫黄(S)、セレン(Se)、テルル(Te)またはその混合物を使用し、16族元素前駆体としては硫黄粉末、セレン粉末、テルル粉末またはトリメチルシリル硫黄(S(TMS(TriMethylSilyl)))、トリメチルシリルセレン(Se(TMS))、トリメチルシリルテルル(Te(TMS))を使用する。
前記16族元素前駆体溶液の濃度は0.001ないし2Mであり、望ましくは0.01ないし0.5Mである。前記16族元素前駆体溶液の濃度が0.01M未満の場合、ナノ結晶を反応溶液から分離するのが困難であるので望ましくなく、逆に、0.5Mを超えた場合には、結晶のサイズの分布が広くなって望ましくない。
第一の方法は、2種以上の16族元素またはその前駆体を含有する2以上の前駆体溶液をそれぞれ製造し、複数の16族元素前駆体溶液を12族金属前駆体溶液に同時に添加する方法である。
第二の方法は、2種以上の16族元素前駆体を含有する2以上の前駆体溶液をそれぞれ製造し、これらを12族金属前駆体溶液に順次に添加する方法である。
第二の方法は、1種以上の12族金属前駆体を含有する前駆体溶液をそれぞれ製造し、この前駆体溶液を16族元素前駆体溶液に同時に添加する。
前記正孔輸送層の素材としては、正孔輸送層の素材として一般的に使用される物質を使用でき、望ましくはポリトリフェニルアミンを使用できるが、これに限定されない。
前記ホールブロッキング層の素材としては、ホールブロッキング層の素材として一般的に使用される物質を使用でき、望ましくはLiF、BaF2またはMgF2などを使用できるが、これに限定されない。
以下、本発明を下記実施例をさらに詳細に説明するものの、本発明が下記実施例のみに限定されるものではない。
トリオクチルアミン(Trioctylamine、以下、TOA)16gと、オレイン酸0.5gと、酸化カドミウム0.4mmolとを同時に、還流コンデンサー(還流冷却器)が設置されている100mlのフラスコに入れ、これを攪拌しながら反応温度を300℃に調節してカドミウム前駆体溶液を形成した。
TOA16gとオレイン酸0.5g、アセチルアセトン酸亜鉛0.2mmolと酸化カドミウム0.2mmolを同時に還流コンデンサーが設置された100mlのフラスコに入れ、これを攪拌しながら反応温度を300℃に調節して亜鉛とカドミウムとの前駆体溶液を作った。
TOA16gとオレイン酸0.5g、酢酸カドミウム0.4mmolを同時に還流コンデンサーが設置された100mlのフラスコに入れ、これを攪拌しながら反応温度を300℃に調節してカドミウム前駆体溶液を作った。
この実施例は、前記実施例1で得たCdSeSナノ結晶をEL(Electroluminescence;電界発光)素子の発光素材として採用した有機EL素子の製作を示すものである。
Claims (17)
- (a)1種以上の12族金属前駆体を分散剤及び溶媒と混合し、これを加熱して12族金属前駆体溶液を得る段階と、
(b)1種以上の16族元素前駆体をこれと配位可能な溶媒に溶解して16族元素前駆体溶液を得る段階と、
(c)前記1種以上の12族金属前駆体溶液と1種以上の16族元素前駆体溶液とを混合して反応させた後、結晶を成長させる段階と、を含み、
前記(a)12族金属前駆体溶液を得る段階において1種の12族金属前駆体を分散剤及び溶媒と混合した場合には、前記(b)段階で少なくとも2種以上の16族元素前駆体をこれと配位可能な溶媒に溶解して少なくとも2種以上の16族元素前駆体溶液を得て、
前記(a)12族金属前駆体溶液を得る段階において2種の12族金属前駆体を分散剤及び溶媒と混合した場合には、前記(b)段階で少なくとも1種以上の16族元素前駆体をこれと配位可能な溶媒に溶解して少なくとも1種以上の16族元素前駆体溶液を得て、
前記(c)段階において、成長する前記結晶が1種以上の12族金属と1種以上の16族元素とより構成される3成分系以上の合金形態を有し、前記結晶のサイズ分布を表す光励起発光スペクトルの半値幅が50nm以下、かつ、発光効率が30%以上であり、
前記12族金属前駆体溶液の濃度は0.001Mないし2Mであり、
前記16族元素前駆体溶液の濃度は0.001Mないし2Mであり、
前記(a)段階において、加熱が100ないし400℃であり、
前記(c)段階において、反応温度は50℃ないし400℃である
ことを特徴とする半導体結晶の製造方法。 - 前記(b)段階の前駆体として2種以上の16族元素前駆体を使用する場合、
前記(c)段階において、前記12族金属前駆体溶液に前記2種以上の16族元素前駆体溶液を同時に添加するか、または順次に添加することを特徴とする請求項1に記載の半導体結晶の製造方法。 - 前記12族金属前駆体は、酢酸亜鉛、アセチルアセトン酸亜鉛、ヨウ化亜鉛、臭化亜鉛、塩化亜鉛、フッ化亜鉛、炭酸亜鉛、シアン化亜鉛、硝酸亜鉛、酸化亜鉛、過酸化亜鉛、過塩素酸亜鉛、硫酸亜鉛、酢酸カドミウム、アセチルアセトン酸カドミウム、ヨウ化カドミウム、臭化カドミウム、塩化カドミウム、フッ化カドミウム、炭酸カドミウム、硝酸カドミウム、酸化カドミウム、過塩素酸カドミウム、リン化カドミウム、硫酸カドミウム、またはその混合物であることを特徴とする請求項1に記載の半導体結晶の製造方法。
- 前記16族元素前駆体は、硫黄粉末、セレン粉末、トリメチルシリル硫黄、トリメチルシリル(TMS)、またはトリメチルシリルセレンであることを特徴とする請求項1に記載の半導体結晶の製造方法。
- 前記12族金属前駆体と前記分散剤の混合モル比は1:0.1ないし1:100モル比であることを特徴とする請求項1に記載の半導体結晶の製造方法。
- 前記16族元素前駆体と前記溶媒の混合モル比は0.1:1ないし1:100モル比であることを特徴とする請求項1に記載の半導体結晶の製造方法。
- 前記分散剤は、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シルデシルアミンよりなる群から選択されたいずれか1つ以上であることを特徴とする請求項1に記載に半導体結晶の製造方法。
- 前記溶媒は、ドデシルアミン、ヘキサデシルアミン、ジメチルドデシルアミン、オクタデセンよりなる群から選択された何れか1つ以上であることを特徴とする請求項1に記載の半導体結晶の製造方法。
- 前記分散剤は、ステアリン酸またはパルミチン酸であることを特徴とする請求項1に記載の半導体結晶の製造方法。
- 前記溶媒は、ドデシルアミン、ヘキサデシルアミンまたはジメチルドデシルアミンであることを特徴とする請求項1に記載の半導体結晶の製造方法。
- 前記結晶成長させる時間が1秒ないし10時間であることを特徴とする請求項1に記載の半導体結晶の製造方法。
- 請求項1ないし11のうちいずれか1項に記載の半導体結晶の製造方法によって製造され、1種以上の12族金属と、1種以上の16族元素とより構成される3成分系以上の合金形態の半導体結晶。
- 前記半導体結晶がZnSSe、CdSSe、ZnCdS、ZnCdSe、またはZnCdSSeであることを特徴とする請求項12に記載の半導体結晶。
- 前記半導体結晶が球型、棒型または立方体型であることを特徴とする請求項12に記載の半導体結晶。
- 一対の電極間に有機膜を含む有機電界発光素子において、
前記有機膜が請求項12に記載の半導体結晶を含むことを特徴とする有機電界発光素子。 - 前記半導体結晶がZnSSe、CdSSe、ZnCdS、ZnCdSe、またはZnCdSSeであることを特徴とする請求項15に記載の有機電界発光素子。
- 前記半導体結晶が球型、棒型、または立方体型であることを特徴とする請求項15に記載の有機電界発光素子。
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JP2005048171A (ja) | 2005-02-24 |
JP4933723B2 (ja) | 2012-05-16 |
US20070273275A1 (en) | 2007-11-29 |
US7250082B2 (en) | 2007-07-31 |
US20050012182A1 (en) | 2005-01-20 |
KR20050010336A (ko) | 2005-01-27 |
CN1610062B (zh) | 2010-05-12 |
US7829189B2 (en) | 2010-11-09 |
JP5540025B2 (ja) | 2014-07-02 |
CN1610062A (zh) | 2005-04-27 |
KR100657891B1 (ko) | 2006-12-14 |
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