JP2020510318A - 有機発光素子およびその製造方法 - Google Patents
有機発光素子およびその製造方法 Download PDFInfo
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- JP2020510318A JP2020510318A JP2019550178A JP2019550178A JP2020510318A JP 2020510318 A JP2020510318 A JP 2020510318A JP 2019550178 A JP2019550178 A JP 2019550178A JP 2019550178 A JP2019550178 A JP 2019550178A JP 2020510318 A JP2020510318 A JP 2020510318A
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- 150000003230 pyrimidines Chemical class 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 150000003413 spiro compounds Chemical class 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- IBBLKSWSCDAPIF-UHFFFAOYSA-N thiopyran Chemical compound S1C=CC=C=C1 IBBLKSWSCDAPIF-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 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
- KWQNQSDKCINQQP-UHFFFAOYSA-K tri(quinolin-8-yloxy)gallane Chemical compound C1=CN=C2C(O[Ga](OC=3C4=NC=CC=C4C=CC=3)OC=3C4=NC=CC=C4C=CC=3)=CC=CC2=C1 KWQNQSDKCINQQP-UHFFFAOYSA-K 0.000 description 1
- 125000005259 triarylamine group Chemical group 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- HTPBWAPZAJWXKY-UHFFFAOYSA-L zinc;quinolin-8-olate Chemical compound [Zn+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 HTPBWAPZAJWXKY-UHFFFAOYSA-L 0.000 description 1
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Abstract
Description
L1は、置換もしくは非置換のアリーレン基であり、
Ar1〜Ar4は、互いに同一または異なり、それぞれ独立に、置換もしくは非置換のアリール基;または置換もしくは非置換のヘテロアリール基である。
Ar5〜Ar7は、互いに同一または異なり、それぞれ独立に、置換もしくは非置換のアリール基である。
<実験例1>
実施例1−1.
ITOが500Åの厚さに薄膜コーティングされたガラス基板を、洗剤を溶かした蒸留水に入れて超音波洗浄した。この時、洗剤としてはフィッシャー社(Fisher Co.)製品を用い、蒸留水としてはミリポア社(Millipore Co.)製品のフィルタで2次濾過した蒸留水を用いた。ITOを30分間洗浄した後、蒸留水で2回繰り返し超音波洗浄を10分間進行させた。蒸留水洗浄が終わった後、アセトン、イソプロピルアルコールの溶剤で超音波洗浄を進行させた。このように用意されたITO透明電極上に、第1ホスト(下記のHIL−1)および第2ホスト(下記のHIL−2)を含むホストとp−ドーパント(下記化学式A−3)との比率を重量比0.8:0.2で混合した組成物を、シクロヘキサノン溶媒に2wt%(質量%)に溶かして、窒素雰囲気下でスピンコーティングし、ホットプレートで220℃、30分の条件で硬化させて、500Åの厚さの正孔注入層を形成した。この時、使用されたホストは、第1ホストと第2ホストとの重量比7:3を適用した。
前記実施例1−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を5:5で含むことを除けば、前記実施例1−1と同様の方法でHOD素子を製造した。
前記実施例1−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を3:7で含むことを除けば、前記実施例1−1と同様の方法でHOD素子を製造した。
前記実施例1−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を10:0で含むことを除けば、前記実施例1−1と同様の方法でHOD素子を製造した。
前記実施例1−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を0:10で含むことを除けば、前記実施例1−1と同様の方法でHOD素子を製造した。
前記実施例1−1において、第2ホストの代わりに下記第3ホスト([HIL−3])を用いたことを除けば、前記実施例1−1と同様の方法でHOD素子を製造した。下記の第1ホストおよび第3ホストのHOMOエネルギー準位値の差は0.2eV未満である。
前記比較例1−1において、第1ホストと第3ホストとの重量比(第1ホスト:第3ホスト)を5:5で含むことを除けば、前記比較例1−1と同様の方法でHOD素子を製造した。
前記比較例1−1において、第1ホストと第3ホストとの重量比(第1ホスト:第3ホスト)を3:7で含むことを除けば、前記比較例1−1と同様の方法でHOD素子を製造した。
前記比較例1−1において、第1ホストと第3ホストとの重量比(第1ホスト:第3ホスト)を10:0で含むことを除けば、前記比較例1−1と同様の方法でHOD素子を製造した。
前記比較例1−1において、第1ホストと第3ホストとの重量比(第1ホスト:第3ホスト)を0:10で含むことを除けば、前記比較例1−1と同様の方法でHOD素子を製造した。
実施例2−1.
ITOが500Åの厚さに薄膜コーティングされたガラス基板を、洗剤を溶かした蒸留水に入れて超音波洗浄した。この時、洗剤としてはフィッシャー社(Fisher Co.)製品を用い、蒸留水としてはミリポア社(Millipore Co.)製品のフィルタで2次濾過した蒸留水を用いた。ITOを30分間洗浄した後、蒸留水で2回繰り返し超音波洗浄を10分間進行させた。蒸留水洗浄が終わった後、アセトン、イソプロピルアルコールの溶剤で超音波洗浄を進行させた。
前記実施例2−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を5:5で含むことを除けば、前記実施例2−1と同様の方法で有機発光素子を製造した。
前記実施例2−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を3:7で含むことを除けば、前記実施例2−1と同様の方法で有機発光素子を製造した。
前記実施例2−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を10:0で含むことを除けば、前記実施例2−1と同様の方法で有機発光素子を製造した。
前記実施例2−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を0:10で含むことを除けば、前記実施例2−1と同様の方法で有機発光素子を製造した。
実施例3−1.
前記実施例2−1において、電子輸送層の材料としてETL−Aの代わりにLG−201を用いたことを除けば、前記実施例2−1と同様の方法で有機発光素子を製造した。
前記実施例3−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を5:5で含むことを除けば、前記実施例3−1と同様の方法で有機発光素子を製造した。
前記実施例3−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を3:7で含むことを除けば、前記実施例3−1と同様の方法で有機発光素子を製造した。
前記実施例3−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を10:0で含むことを除けば、前記実施例3−1と同様の方法で有機発光素子を製造した。
前記実施例3−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を0:10で含むことを除けば、前記実施例3−1と同様の方法で有機発光素子を製造した。
実施例4−1.
前記実施例2−1において、電子輸送層の材料としてETL−Aの代わりにLG−201とLiqを用いたことを除けば、前記実施例2−1と同様の方法で有機発光素子を製造した。
前記実施例4−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を5:5で含むことを除けば、前記実施例4−1と同様の方法で有機発光素子を製造した。
前記実施例4−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を3:7で含むことを除けば、前記実施例4−1と同様の方法で有機発光素子を製造した。
前記実施例4−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を10:0で含むことを除けば、前記実施例4−1と同様の方法で有機発光素子を製造した。
前記実施例4−1において、第1ホストと第2ホストとの重量比(第1ホスト:第2ホスト)を0:10で含むことを除けば、前記実施例4−1と同様の方法で有機発光素子を製造した。
2:アノード
3:正孔注入層
4:正孔輸送層
5:発光層
6:電子輸送層
7:電子注入層
8:カソード
Claims (9)
- 第1電極と、前記第1電極に対向して備えられた第2電極と、前記第1電極と第2電極との間に備えられた発光層、および前記発光層と第1電極との間に備えられた正孔注入層を含む有機物層とを含み、
前記正孔注入層は、第1ホスト、第2ホスト、およびドーパントを含み、
前記第1ホストおよび第2ホストのHOMOエネルギー準位値の差が0.2eV以上である有機発光素子。 - 前記第1ホストおよび第2ホストは、インジウムスズ酸化物(ITO)からなる第1電極、正孔注入層、およびAlからなる第2電極のみを含み、前記正孔注入層の厚さが500Åの時、
前記正孔注入層が第1ホストを含む場合の、2Vまたは3Vでの電流密度値と、第2ホストを含む場合の、2Vまたは3Vでの電流密度値との差が200mA/cm2以上である、請求項1に記載の有機発光素子。 - 前記第1ホストおよび第2ホストのうちの1以上のHOMOエネルギー準位値とドーパントのLUMOエネルギー準位値との差が0.5eV以下である、請求項1に記載の有機発光素子。
- 前記有機物層は正孔輸送層をさらに含み、
前記第1ホストおよび第2ホストのうちの1以上と正孔輸送層のHOMOエネルギー準位値の差が0.4eV以下である、請求項1に記載の有機発光素子。 - 前記第1ホストおよび第2ホストは、アミン系化合物である、請求項1に記載の有機発光素子。
- 前記第1ホストおよび第2ホストは、アミン基の個数の差が1以上である、請求項5に記載の有機発光素子。
- 前記第1ホストは、下記化学式1で表され、前記第2ホストは、下記化学式2で表されるものである、請求項1に記載の有機発光素子:
L1は、置換もしくは非置換のアリーレン基であり、
Ar1〜Ar4は、互いに同一または異なり、それぞれ独立に、置換もしくは非置換のアリール基;または置換もしくは非置換のヘテロアリール基であり、
Ar5〜Ar7は、互いに同一または異なり、それぞれ独立に、置換もしくは非置換のアリール基である。 - 基板を用意するステップと、
前記基板上に第1電極を形成するステップと、
前記第1電極上に正孔注入層を含む有機物層を形成するステップと、
前記正孔注入層を含む有機物層上に発光層を含む有機物層を形成するステップと、
前記発光層を含む有機物層上に第2電極を形成するステップとを含み、
前記正孔注入層は、第1ホスト、第2ホスト、およびドーパントを含み、
前記第1ホストおよび第2ホストのHOMOエネルギー準位値の差が0.2eV以上である有機発光素子の製造方法。 - 前記正孔注入層は、溶液工程または蒸着工程を用いて形成されたものである、請求項8に記載の有機発光素子の製造方法。
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Application Number | Priority Date | Filing Date | Title |
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KR1020170169357A KR102244800B1 (ko) | 2017-12-11 | 2017-12-11 | 유기 발광 소자 및 이의 제조방법 |
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US11258031B2 (en) | 2022-02-22 |
CN110447118B (zh) | 2022-03-01 |
KR102244800B1 (ko) | 2021-04-26 |
US20200006693A1 (en) | 2020-01-02 |
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JP6833252B2 (ja) | 2021-02-24 |
CN110447118A (zh) | 2019-11-12 |
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