JP4478166B2 - 有機金属錯体を含む有機膜を備えた有機発光素子 - Google Patents
有機金属錯体を含む有機膜を備えた有機発光素子 Download PDFInfo
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- JP4478166B2 JP4478166B2 JP2007085556A JP2007085556A JP4478166B2 JP 4478166 B2 JP4478166 B2 JP 4478166B2 JP 2007085556 A JP2007085556 A JP 2007085556A JP 2007085556 A JP2007085556 A JP 2007085556A JP 4478166 B2 JP4478166 B2 JP 4478166B2
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- 0 CCCCCCCCCC*(*(CCCCCCCCC1)*1N)NO* Chemical compound CCCCCCCCCC*(*(CCCCCCCCC1)*1N)NO* 0.000 description 1
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- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional [2D] radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional [2D] radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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Description
[M(L)2]a (化学式1)
ただし、式中、Lは、陰イオン性配位子であり、Mは、前記Lと5配位結合または6配位結合できる金属であり、aは、2〜4の整数である。
[M(L)2]a (化学式1)
ただし、式中、Mは、中心金属を示し、Lは、中心金属Mと配位結合する配位子を示す。
アノードとして100nm厚さの(アルミニウム及びITO)(SDI社製)基板を50mmx50mmx0.7mmのサイズに切ってイソプロピルアルコールと純水の中で各5分間超音波洗浄した後、30分間UV、オゾン洗浄して使用した。
前記電極の上部に、正孔注入物質であるm−TDATAを利用して、60nm厚さの正孔注入層を形成した後、前記正孔注入層の上部に正孔輸送物質であるNPBを蒸着させて20nm厚さの正孔輸送層を形成した。
前記正孔輸送層の上部にホストとして前記化学式4で示される有機金属錯体92質量部及び燐光ドーパントとしてIr(piq)2acac 8質量部を蒸着して、30nm厚さの発光層を形成した。その後、前記発光層の上部にAlq3を30nmの厚さに形成して電子輸送層を形成した。前記電子輸送層の上部にLiqを蒸着して0.5nm厚さの電子注入層を形成した後、カソードとしてMgAg 150nmを形成して、有機発光素子を製造した。
実施例1に記載された有機発光素子の製造方法のうち、発光層の形成時、第1ホストとして前記化学式4で示される有機金属錯体50質量部、第2ホストとしてCBP 50質量部、及び燐光ドーパントとしてIr(piq)2acac 8質量部を蒸着した点を除いては、実施例1に記載された有機発光素子の製造方法と同じ方法で有機発光素子を完成した。
実施例1に記載された有機発光素子の製造方法のうち、発光層の形成時、ホストとしてCBP 92質量部及び燐光ドーパントとしてIr(piq)2acac 8質量部を蒸着した点を除いては、実施例1に記載された有機発光素子の製造方法と同じ方法で有機発光素子を完成した。
実施例1及び2によって製造した有機発光素子及び比較例によって製造した有機発光素子について、電流密度、効率及び寿命をPR650(Spectroscan)Source Measurement Unit.とMcScience Polaronix M6000とを利用して評価し、その結果を図5、6及び7にそれぞれ示す。
図5を参照すれば、本発明による実施例1及び2の有機発光素子が、いずれも比較例の有機発光素子に比べて優れた電流密度(mA/cm2)を有するということが分かる。
図6を参照すれば、本発明による実施例1及び2の有機発光素子が、いずれも比較例の有機発光素子に比べて優れた効率を有するということが分かる。
図7を参照すれば、本発明による実施例1及び2の有機発光素子は、比較例の有機発光素子に比べて長寿命を有するということが分かる。
一方、実施例1及び2の有機発光素子及び比較例の有機発光素子のELスペクトルをSpectra Radiometer(PR650,Photo Researcher Inc.)(5Vで測定)を利用して評価し、その結果を図8に示す。図8から実施例1及び2の有機発光素子及び比較例の有機発光素子は、最大発光ピークが約630nmで観察される赤色発光であることが分かる。
実施例1に記載された有機発光素子の製造方法のうち、発光層の形成時、ホストとして前記化学式4で示される有機金属錯体92質量部、及び燐光ドーパントとして前記化学式14で示される有機金属錯体8質量部を蒸着した点を除いては、実施例1に記載された有機発光素子の製造方法と同じ方法で有機発光素子を完成した。
実施例1に記載された有機発光素子の製造方法のうち、発光層の形成時、ホストとして前記化学式4で示される有機金属錯体90質量部、燐光ドーパントとして前記化学式14で示される有機金属錯体10質量部を蒸着した点を除いては、実施例1に記載された有機発光素子の製造方法と同じ方法で有機発光素子を完成した。
実施例3及び4によって製造した有機発光素子について、効率、電流密度及び寿命をPR650(Spectroscan)Source Measurement Unit.とMcScience Polaronix M6000を利用して評価し、その結果を図9、10及び11にそれぞれ示す。
図9を参照すれば、本発明による実施例3及び4の有機発光素子がいずれも優れた効率を有するということが分かる。
図10を参照すれば、本発明による実施例3及び4の有機発光素子がいずれも優れた電流密度(mA/cm2)を有するということが分かる。
図11を参照すれば、本発明による実施例3及び4の有機発光素子は、長寿命を有するということが分かる。
一方、実施例3及び4の有機発光素子の有機発光素子のELスペクトルをSpectra Radiometer(PR650、Photo Researcher Inc.)(5Vで測定)を利用して評価し、その結果を図12に示す。図12から実施例3及び4の有機発光素子は、最大発光ピークが約630nmで観察される赤色発光であることが分かる。
Claims (6)
- 前記燐光ドーパントは、ビスチエニルピリジンアセチルアセトネートイリジウム、ビス(ベンゾチエニルピリジン)アセチルアセトネートイリジウム、ビス(2−フェニルベンゾチアゾール)アセチルアセトネートイリジウム、ビス(1−フェニルイソキノリン)イリジウムアセチルアセトネート、トリス(1−フェニルイソキノリン)イリジウム、トリス(フェニルピリジン)イリジウム、トリス(2−ビフェニルピリジン)イリジウム、トリス(3−ビフェニルピリジン)イリジウム、トリス(4−ビフェニルピリジン)イリジウム、Ir(pq)2(acac)(pqは2−フェニルキノリンであり、acacはアセチルアセトンである、下記化学式8)、Ir(ppy)3(ppyはフェニルピリジンの略語である、下記化学式9)、下記化学式10で示される化合物、Firpic(下記化学式11)、Ir(piq)3(下記化学式12)、Ir(piq)2acac(piqはフェニルイソキノリン)(下記化学式13)からなる群より選択されたことを特徴とする請求項1に記載の有機発光素子:
- 前記有機膜は、CBP、Alq3、BAlq及びBebqからなる群より選択された一つ以上のホストをさらに含むことを特徴とする請求項1または2に記載の有機発光素子。
- 前記ホストの含有量は、前記化学式4で示される有機金属錯体100質量部当たり50質量部〜150質量部の範囲にあることを特徴とする請求項3に記載の有機発光素子。
- 前記有機膜は、正孔注入層、正孔輸送層、電子輸送層、及び電子注入層からなる群より選択された一つ以上をさらに備えることを特徴とする請求項1ないし4のうちいずれか1項に記載の有機発光素子。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20060110534 | 2006-11-09 | ||
| KR1020070018089A KR100846601B1 (ko) | 2006-11-09 | 2007-02-22 | 유기 금속 착물을 포함한 유기막을 구비한 유기 발광 소자 |
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| Publication Number | Publication Date |
|---|---|
| JP2008124415A JP2008124415A (ja) | 2008-05-29 |
| JP4478166B2 true JP4478166B2 (ja) | 2010-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2007085556A Expired - Fee Related JP4478166B2 (ja) | 2006-11-09 | 2007-03-28 | 有機金属錯体を含む有機膜を備えた有機発光素子 |
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| Country | Link |
|---|---|
| US (1) | US9150783B2 (ja) |
| EP (1) | EP1923448B1 (ja) |
| JP (1) | JP4478166B2 (ja) |
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| JP3861930B2 (ja) | 1995-12-15 | 2006-12-27 | ソニー株式会社 | 金属複核錯体、その製造方法及び光学的素子 |
| JP3871151B2 (ja) | 1995-12-15 | 2007-01-24 | ソニー株式会社 | 金属複核錯体、その製造方法及び光学的素子 |
| JP3719550B2 (ja) | 1996-08-06 | 2005-11-24 | ソニー株式会社 | 金属複核錯体およびその製造方法、ならびにこの金属複核錯体を用いた光学素子 |
| JP2000247972A (ja) | 1999-02-26 | 2000-09-12 | Kuraray Co Ltd | ベンゾオキサゾール類またはベンゾチアゾール類を配位子とする亜鉛錯体 |
| JP3938263B2 (ja) | 1999-11-09 | 2007-06-27 | 独立行政法人科学技術振興機構 | 金属錯体の製造方法 |
| US6489638B2 (en) | 2000-06-23 | 2002-12-03 | Semiconductor Energy Laboratory Co., Ltd. | Light emitting device |
| GB0028436D0 (en) | 2000-11-21 | 2001-01-10 | South Bank Univ Entpr Ltd | Electroluminescent device incorporating conjugated polymer |
| US6764776B2 (en) | 2000-11-30 | 2004-07-20 | Semiconductor Energy Laboratory Co., Ltd. | Light emitting device |
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| DE10241814A1 (de) * | 2002-09-06 | 2004-03-25 | Covion Organic Semiconductors Gmbh | Prozeß zur Herstellung von Aryl-Aryl gekoppelten Verbindungen |
| KR100624407B1 (ko) | 2003-01-02 | 2006-09-18 | 삼성에스디아이 주식회사 | 디페닐안트라센 유도체 및 이를 채용한 유기 전계 발광 소자 |
| GB0311234D0 (en) * | 2003-05-16 | 2003-06-18 | Isis Innovation | Organic phosphorescent material and organic optoelectronic device |
| KR100537621B1 (ko) | 2004-02-02 | 2005-12-19 | 삼성에스디아이 주식회사 | 이리듐 화합물 및 이를 이용한 유기 전계 발광 소자 |
| US7749037B2 (en) * | 2004-02-19 | 2010-07-06 | E. I. Du Pont De Nemours And Company | Process for fabricating an organic electronic device using liquid deposition and devices made by the process |
| KR100708655B1 (ko) | 2004-11-27 | 2007-04-18 | 삼성에스디아이 주식회사 | 유기 전계 발광 소자 |
| JP2008103535A (ja) | 2006-10-19 | 2008-05-01 | Takasago Internatl Corp | 発光素子 |
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| US20080111476A1 (en) | 2008-05-15 |
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