KR20080025385A - 적층형 유기 전계발광 장치 및 그의 제작방법 - Google Patents
적층형 유기 전계발광 장치 및 그의 제작방법 Download PDFInfo
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- KR20080025385A KR20080025385A KR1020080015351A KR20080015351A KR20080025385A KR 20080025385 A KR20080025385 A KR 20080025385A KR 1020080015351 A KR1020080015351 A KR 1020080015351A KR 20080015351 A KR20080015351 A KR 20080015351A KR 20080025385 A KR20080025385 A KR 20080025385A
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- South Korea
- Prior art keywords
- organic
- organic electroluminescent
- thin film
- electroluminescent device
- stacked
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/20—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising organic-organic junctions, e.g. donor-acceptor junctions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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- H10K10/00—Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
- H10K10/701—Organic molecular electronic devices
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- H10K30/20—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising organic-organic junctions, e.g. donor-acceptor junctions
- H10K30/211—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising organic-organic junctions, e.g. donor-acceptor junctions comprising multiple junctions, e.g. double heterojunctions
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- H10K30/50—Photovoltaic [PV] devices
- H10K30/57—Photovoltaic [PV] devices comprising multiple junctions, e.g. tandem PV cells
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- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
- H10K50/13—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
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- H10K50/15—Hole transporting layers
- H10K50/155—Hole transporting layers comprising dopants
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- H10K50/16—Electron transporting layers
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Abstract
Description
Claims (38)
- 양극;음극;상기 양극과 상기 음극 사이에 배치된 다수의 유기 전계발광 유닛; 및각각의 인접한 유기 전계발광 유닛들 사이에 배치된 도전체 박막층을 포함하는 적층형 유기 전계발광 장치.
- 양극;음극;상기 양극과 상기 음극 사이에 배치된 다수의 유기 전계발광 유닛; 및각각의 인접한 유기 전계발광 유닛들 사이에 배치된 도전체 박막층을 포함하고,상기 도전체 박막층은 적어도 하나의 n형 도핑 유기 층을 포함하는 적층형 유기 전계발광 장치.
- 양극;음극;상기 양극과 상기 음극 사이에 배치된 다수의 유기 전계발광 유닛; 및각각의 인접한 유기 전계발광 유닛들 사이에 배치된 도전체 박막층을 포함하 고,상기 도전체 박막층은 적어도 하나의 p형 도핑 유기 층을 포함하는 적층형 유기 전계발광 장치.
- 양극;음극;상기 양극과 상기 음극 사이에 배치된 다수의 유기 전계발광 유닛; 및각각의 인접한 유기 전계발광 유닛들 사이에 배치된 도전체 박막층을 포함하고,상기 도전체 박막층은 적어도 하나의 n형 도핑 유기 층과 하나의 p형 도핑 유기 층을 포함하는 적층형 유기 전계발광 장치.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서, 상기 유기 전계발광 유닛이 저분자 재료를 포함하는 적층형 유기 전계발광 장치.
- 제 5 항에 있어서, 상기 유기 전계발광 유닛이 정공 수송층과 전자 수송층을 포함하는 적층형 유기 전계발광 장치.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서, 상기 유기 전계발광 유닛이 고분자 재료를 포함하는 적층형 유기 전계발광 장치.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서, 상기 유기 전계발광 유닛 각각의 두께가 100∼200 nm인 적층형 유기 전계발광 장치.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서, 상기 도전체 박막층의 두께가 10 nm인 적층형 유기 전계발광 장치.
- 제 1 항에 있어서, 상기 유기 전계발광 유닛들 모두가 동일한 구조인 적층형 유기 전계발광 장치.
- 제 1 항에 있어서, 상기 유기 전계발광 유닛들 중 적어도 하나가 적어도 하나의 다른 유기 전계발광 유닛과 상이한 구조인 적층형 유기 전계발광 장치.
- 제 1 항에 있어서, 상기 유기 전계발광 유닛이 적어도 3개 존재하고, 상기 도전체 박막층이 n형 도핑 유기 층, p형 도핑 유기 층, 또는 이들의 조합을 포함하는 적층형 유기 전계발광 장치.
- 제 1 항에 있어서, 상기 유기 전계발광 유닛들 중 적어도 하나가 삼중항 방사체(triplet emitter)인 적층형 유기 전계발광 장치.
- 제 2 항에 있어서, 상기 n형 도핑 유기 층은, 전자 수송을 보조할 수 있는 적어도 하나의 유기 재료와, 적어도 하나의 n형 도펀트를 포함하는 적층형 유기 전계발광 장치.
- 제 3 항에 있어서, 상기 p형 도핑 유기 층은, 정공 수송을 보조할 수 있는 적어도 하나의 유기 재료와, 적어도 하나의 p형 도펀트를 포함하는 적층형 유기 전계발광 장치.
- 제 14 항에 있어서, 상기 n형 도핑 유기 층의 상기 유기 재료는 Alq3를 포함하는 적층형 유기 전계발광 장치.
- 제 14 항에 있어서, 상기 n형 도핑 유기 층 내의 상기 n형 도펀트는, 상기 유기 재료와 함께 전하 이동 착체를 형성할 수 있도록 강한 전자 공여성을 가지는 유기 화합물 도너를 포함하는 적층형 유기 전계발광 장치.
- 제 17 항에 있어서, 상기 n형 도핑 유기 층 내의 상기 n형 도펀트는 비스(에틸렌디티오)-테트라티아풀발렌(BEDT-TTF), 테트라티아풀발렌(TTF), 이들의 유도체, 또는 이들의 조합을 포함하는 적층형 유기 전계발광 장치.
- 제 14 항에 있어서, n형 도핑 농도가 2 mol%인 적층형 유기 전계발광 장치.
- 제 15 항에 있어서, 상기 p형 도핑 유기 층 내의 상기 p형 도펀트는, 상기 유기 재료와 함께 전하 이동 착체를 형성할 수 있는 무기 억셉터를 포함하는 적층형 유기 전계발광 장치.
- 제 20 항에 있어서, 상기 p형 도핑 유기 층 내의 상기 p형 도펀트는 FeCl3 또는 그의 조합물을 포함하는 적층형 유기 전계발광 장치.
- 제 15 항에 있어서, 상기 p형 도핑 유기 층 내의 상기 p형 도펀트는 상기 유기 재료와 함께 전하 이동 착체를 형성할 수 있도록 강한 전자 수용성을 가지는 유기 화합물 억셉터를 포함하는 적층형 유기 전계발광 장치.
- 제 15 항에 있어서, p형 도핑 농도가 2 mol%인 적층형 유기 전계발광 장치.
- 제 4 항에 있어서, 상기 도전체 박막층은 서로 인접하여 배치된 n형 도핑 유기 층과 p형 도핑 유기 층을 포함하고, 상기 n형 도핑 유기 층은 상기 양극측에 배치되고, 상기 p형 도핑 유기 층은 상기 음극측에 배치되는 적층형 유기 전계발광 장치.
- 제 24 항에 있어서, 상기 n형 도핑 유기 층은, 전자 수송을 보조할 수 있는 적어도 하나의 유기 재료와, 적어도 하나의 n형 도펀트를 포함하고, 상기 p형 도핑 유기 층은, 정공 수송을 보조할 수 있는 적어도 하나의 유기 재료와, 적어도 하나의 p형 도펀트를 포함하는 적층형 유기 전계발광 장치.
- 제 25 항에 있어서, 상기 n형 도핑 유기 층의 상기 유기 재료는 Alq3를 포함하는 적층형 유기 전계발광 장치.
- 제 25 항에 있어서, 상기 n형 도핑 유기 층 내의 상기 n형 도펀트는, 상기 유기 재료와 함께 전하 이동 착체를 형성할 수 있는, 강한 전자 공여성을 가지는 유기 화합물 도너를 포함하는 적층형 유기 전계발광 장치.
- 제 27 항에 있어서, 상기 n형 도핑 유기 층 내의 상기 n형 도펀트는 비스(에틸렌디티오)-테트라티아풀발렌(BEDT-TTF), 테트라티아풀발렌(TTF), 이들의 유도체, 또는 이들의 조합을 포함하는 적층형 유기 전계발광 장치.
- 제 25 항에 있어서, 상기 p형 도핑 유기 층 내의 상기 p형 도펀트는, 상기 유기 재료와 함께 전하 이동 착체를 형성할 수 있는 무기 억셉터를 포함하는 적층 형 유기 전계발광 장치.
- 제 29 항에 있어서, 상기 p형 도핑 유기 층 내의 상기 p형 도펀트는 FeCl3 또는 그의 조합물을 포함하는 적층형 유기 전계발광 장치.
- 제 25 항에 있어서, 상기 p형 도핑 유기 층 내의 상기 p형 도펀트는 상기 유기 재료와 함께 전하 이동 착체를 형성할 수 있는, 강한 전자 수용성을 가지는 유기 화합물 억셉터를 포함하는 적층형 유기 전계발광 장치.
- 제 25 항에 있어서, n형 도핑 농도와 p형 도핑 농도 각각이 2 mol%인 적층형 유기 전계발광 장치.
- 제 2 항, 제 3 항, 제 4 항 중 어느 한 항에 있어서, 황색 발광 유닛과 청색 발광 유닛이 조합하여 백색 광을 생성하도록 적어도 2개의 유기 전계발광 유닛을 포함하는 적층형 유기 전계발광 장치.
- 제 2 항, 제 3 항, 제 4 항 중 어느 한 항에 있어서, 상기 유기 전계발광 유닛들이 동일한 색을 발광하는 적층형 유기 전계발광 장치.
- 적어도 2개의 유기 전계발광 유닛을 가지는 적층형 유기 전계발광 장치를 제작하는 방법으로서,양극에 접속되는 제1 유기 전계발광 유닛과, 음극에 접속되는 제2 유기 전계발광 유닛을 제공하는 공정과;적어도 상기 제1 유기 전계발광 유닛과 상기 제2 유기 전계발광 유닛을 접속하는 도전체 박막층으로서, 상기 적층형 유기 전계발광 장치가 단일의 양극 및 음극만을 가지도록, 각각의 인접한 유기 전계발광 유닛들 사이에 배치되는 도전체 박막층을 제공하는 공정을 포함하는 적층형 유기 전계발광 장치 제작방법.
- 제 35 항에 있어서, 상기 제1 유기 전계발광 유닛과 상기 제2 유기 전계발광 유닛 사이에 하나 또는 그 이상의 중간 유기 전계발광 유닛이 더 배치되고, 그 중간 유기 전계발광 유닛은 양극이나 음극 없이 형성되고, 또한, 상기 적층형 유기 전계발광 장치 내에 상기 중간 유기 전계발광 유닛을 고정시키는 도전체 박막층을 사용하여 형성되는 적층형 유기 전계발광 장치 제작방법.
- 제 35 항에 있어서, 향상된 발광 효율을 제공하도록 상기 유기 전계발광 유닛들을 선택하는 공정을 더 포함하는 적층형 유기 전계발광 장치 제작방법.
- 제 37 항에 있어서, 상기 유기 전계발광 유닛의 수가 발광 효율의 향상 정도에 따라 선택되는 적층형 유기 전계발광 장치 제작방법.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009139607A3 (ko) * | 2008-05-16 | 2010-02-18 | 주식회사 엘지화학 | 적층형 유기발광소자 |
KR101065912B1 (ko) * | 2008-05-16 | 2011-09-19 | 주식회사 엘지화학 | 적층형 유기발광소자 |
US8637854B2 (en) | 2008-05-16 | 2014-01-28 | Lg Chem, Ltd. | Stacked organic light emitting diode |
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