KR100669776B1 - 유기 전계 발광 소자 - Google Patents
유기 전계 발광 소자 Download PDFInfo
- Publication number
- KR100669776B1 KR100669776B1 KR1020040094913A KR20040094913A KR100669776B1 KR 100669776 B1 KR100669776 B1 KR 100669776B1 KR 1020040094913 A KR1020040094913 A KR 1020040094913A KR 20040094913 A KR20040094913 A KR 20040094913A KR 100669776 B1 KR100669776 B1 KR 100669776B1
- Authority
- KR
- South Korea
- Prior art keywords
- light emitting
- layer
- organic electroluminescent
- bis
- electroluminescent device
- Prior art date
Links
- 238000005401 electroluminescence Methods 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 92
- 239000002019 doping agent Substances 0.000 claims abstract description 15
- 230000005525 hole transport Effects 0.000 claims description 35
- -1 carbazole compound Chemical class 0.000 claims description 25
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 229910052741 iridium Inorganic materials 0.000 claims description 21
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 150000001875 compounds Chemical class 0.000 claims description 16
- 239000007983 Tris buffer Substances 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 12
- 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 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 8
- 125000002524 organometallic group Chemical group 0.000 claims description 7
- UJOBWOGCFQCDNV-UHFFFAOYSA-N Carbazole Natural products C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims description 6
- IERDDDBDINUYCD-UHFFFAOYSA-N 1-[4-[4-(9h-carbazol-1-yl)phenyl]phenyl]-9h-carbazole Chemical group C12=CC=CC=C2NC2=C1C=CC=C2C(C=C1)=CC=C1C(C=C1)=CC=C1C1=C2NC3=CC=CC=C3C2=CC=C1 IERDDDBDINUYCD-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- UZRUZACOSHWLOC-UHFFFAOYSA-M phenoxyaluminum Chemical compound [Al]OC1=CC=CC=C1 UZRUZACOSHWLOC-UHFFFAOYSA-M 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 claims description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical group C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical group C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
- NRSBAUDUBWMTGL-UHFFFAOYSA-N 2-(1-benzothiophen-2-yl)pyridine Chemical compound S1C2=CC=CC=C2C=C1C1=CC=CC=N1 NRSBAUDUBWMTGL-UHFFFAOYSA-N 0.000 claims description 3
- XBHOUXSGHYZCNH-UHFFFAOYSA-N 2-phenyl-1,3-benzothiazole Chemical compound C1=CC=CC=C1C1=NC2=CC=CC=C2S1 XBHOUXSGHYZCNH-UHFFFAOYSA-N 0.000 claims description 3
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 claims description 3
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical group C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 claims description 3
- 150000003852 triazoles Chemical group 0.000 claims description 3
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 claims description 2
- AHBDIQVWSLNELJ-UHFFFAOYSA-N 1-[3,5-bis(9h-carbazol-1-yl)phenyl]-9h-carbazole Chemical compound C12=CC=CC=C2NC2=C1C=CC=C2C1=CC(C=2C=3NC4=CC=CC=C4C=3C=CC=2)=CC(C2=C3NC=4C(C3=CC=C2)=CC=CC=4)=C1 AHBDIQVWSLNELJ-UHFFFAOYSA-N 0.000 claims description 2
- DBDOZRBRAYSLFX-UHFFFAOYSA-N 1-[4-[4-(9h-carbazol-1-yl)-2-methylphenyl]-3-methylphenyl]-9h-carbazole Chemical group N1C2=CC=CC=C2C2=C1C(C=1C=C(C(=CC=1)C=1C(=CC(=CC=1)C=1C3=C(C4=CC=CC=C4N3)C=CC=1)C)C)=CC=C2 DBDOZRBRAYSLFX-UHFFFAOYSA-N 0.000 claims description 2
- XSNBULILWHLFQU-UHFFFAOYSA-N 2,3-dithiophen-2-ylpyridine Chemical group C1=CSC(C=2C(=NC=CC=2)C=2SC=CC=2)=C1 XSNBULILWHLFQU-UHFFFAOYSA-N 0.000 claims description 2
- LMFDQYUZPFGUMW-UHFFFAOYSA-N 2,9-dimethyl-4,7-diphenyl-3h-benzo[h]cinnoline Chemical compound C=12C=CC3=C(C=4C=CC=CC=4)C=C(C)C=C3C2=NN(C)CC=1C1=CC=CC=C1 LMFDQYUZPFGUMW-UHFFFAOYSA-N 0.000 claims description 2
- RKVIAZWOECXCCM-UHFFFAOYSA-N 2-carbazol-9-yl-n,n-diphenylaniline Chemical compound C1=CC=CC=C1N(C=1C(=CC=CC=1)N1C2=CC=CC=C2C2=CC=CC=C21)C1=CC=CC=C1 RKVIAZWOECXCCM-UHFFFAOYSA-N 0.000 claims description 2
- CZHQZVUBGSXJFF-UHFFFAOYSA-N 2-n,4-n,6-n-trinaphthalen-1-yl-2-n,4-n,6-n-triphenyl-1,3,5-triazine-2,4,6-triamine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=NC(N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)=NC(N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)=N1 CZHQZVUBGSXJFF-UHFFFAOYSA-N 0.000 claims description 2
- YAPIJPOCONTNDY-UHFFFAOYSA-N N1C2=CC=CC=C2C2=C1C(C1=CC=C(C=C1)[SiH2]C=1C=CC(=CC=1)C=1C3=C(C4=CC=CC=C4N3)C=CC=1)=CC=C2 Chemical compound N1C2=CC=CC=C2C2=C1C(C1=CC=C(C=C1)[SiH2]C=1C=CC(=CC=1)C=1C3=C(C4=CC=CC=C4N3)C=CC=1)=CC=C2 YAPIJPOCONTNDY-UHFFFAOYSA-N 0.000 claims description 2
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 229910052790 beryllium Inorganic materials 0.000 claims description 2
- XZCJVWCMJYNSQO-UHFFFAOYSA-N butyl pbd Chemical compound C1=CC(C(C)(C)C)=CC=C1C1=NN=C(C=2C=CC(=CC=2)C=2C=CC=CC=2)O1 XZCJVWCMJYNSQO-UHFFFAOYSA-N 0.000 claims description 2
- JVZRCNQLWOELDU-UHFFFAOYSA-N gamma-Phenylpyridine Natural products C1=CC=CC=C1C1=CC=NC=C1 JVZRCNQLWOELDU-UHFFFAOYSA-N 0.000 claims description 2
- 125000001072 heteroaryl group Chemical group 0.000 claims description 2
- SHNBXKOUKNSCSQ-UHFFFAOYSA-N iridium;1-phenylisoquinoline Chemical compound [Ir].C1=CC=CC=C1C1=NC=CC2=CC=CC=C12.C1=CC=CC=C1C1=NC=CC2=CC=CC=C12 SHNBXKOUKNSCSQ-UHFFFAOYSA-N 0.000 claims description 2
- UEEXRMUCXBPYOV-UHFFFAOYSA-N iridium;2-phenylpyridine Chemical compound [Ir].C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1 UEEXRMUCXBPYOV-UHFFFAOYSA-N 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 claims description 2
- 125000001424 substituent group Chemical group 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- VYNOIUYOWDUGBE-UHFFFAOYSA-N 1-(4-methoxy-2-phenylphenyl)-9h-carbazole Chemical compound C=1C(OC)=CC=C(C=2C=3NC4=CC=CC=C4C=3C=CC=2)C=1C1=CC=CC=C1 VYNOIUYOWDUGBE-UHFFFAOYSA-N 0.000 claims 1
- PRUCJKSKYARXJB-UHFFFAOYSA-N 1-[2-[3,5-bis[2-(9h-carbazol-1-yl)phenyl]phenyl]phenyl]-9h-carbazole Chemical compound C12=CC=CC=C2NC2=C1C=CC=C2C1=CC=CC=C1C1=CC(C=2C(=CC=CC=2)C=2C=3NC4=CC=CC=C4C=3C=CC=2)=CC(C=2C(=CC=CC=2)C=2C=3NC4=CC=CC=C4C=3C=CC=2)=C1 PRUCJKSKYARXJB-UHFFFAOYSA-N 0.000 claims 1
- YGXMMMPUTDCEAF-UHFFFAOYSA-N 2-n,2-n,4-n,4-n,6-n,6-n-hexakis-phenyl-1,3,5-triazine-2,4,6-triamine Chemical compound C1=CC=CC=C1N(C=1N=C(N=C(N=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 YGXMMMPUTDCEAF-UHFFFAOYSA-N 0.000 claims 1
- 125000004986 diarylamino group Chemical group 0.000 claims 1
- 230000005684 electric field Effects 0.000 claims 1
- CECAIMUJVYQLKA-UHFFFAOYSA-N iridium 1-phenylisoquinoline Chemical compound [Ir].C1=CC=CC=C1C1=NC=CC2=CC=CC=C12.C1=CC=CC=C1C1=NC=CC2=CC=CC=C12.C1=CC=CC=C1C1=NC=CC2=CC=CC=C12 CECAIMUJVYQLKA-UHFFFAOYSA-N 0.000 claims 1
- 150000004866 oxadiazoles Chemical class 0.000 claims 1
- 150000005041 phenanthrolines Chemical class 0.000 claims 1
- 150000003918 triazines Chemical class 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000758 substrate Substances 0.000 description 11
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 9
- 230000005281 excited state Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000004528 spin coating Methods 0.000 description 5
- 238000001771 vacuum deposition Methods 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 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 4
- MBPCKEZNJVJYTC-UHFFFAOYSA-N 4-[4-(n-phenylanilino)phenyl]aniline Chemical compound C1=CC(N)=CC=C1C1=CC=C(N(C=2C=CC=CC=2)C=2C=CC=CC=2)C=C1 MBPCKEZNJVJYTC-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- CUJRVFIICFDLGR-UHFFFAOYSA-N acetylacetonate Chemical compound CC(=O)[CH-]C(C)=O CUJRVFIICFDLGR-UHFFFAOYSA-N 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 230000005283 ground state Effects 0.000 description 3
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 3
- 238000002207 thermal evaporation Methods 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- LPCWDYWZIWDTCV-UHFFFAOYSA-N 1-phenylisoquinoline Chemical compound C1=CC=CC=C1C1=NC=CC2=CC=CC=C12 LPCWDYWZIWDTCV-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- FIDRAVVQGKNYQK-UHFFFAOYSA-N 1,2,3,4-tetrahydrotriazine Chemical compound C1NNNC=C1 FIDRAVVQGKNYQK-UHFFFAOYSA-N 0.000 description 1
- WECOUKMONWFOGF-UHFFFAOYSA-N 1-[2-[3,5-bis[2-(9h-carbazol-1-yl)-5-methoxyphenyl]phenyl]-4-methoxyphenyl]-9h-carbazole Chemical compound C12=CC=CC=C2NC2=C1C=CC=C2C1=CC=C(OC)C=C1C1=CC(C=2C(=CC=C(OC)C=2)C=2C=3NC4=CC=CC=C4C=3C=CC=2)=CC(C=2C(=CC=C(OC)C=2)C=2C=3NC4=CC=CC=C4C=3C=CC=2)=C1 WECOUKMONWFOGF-UHFFFAOYSA-N 0.000 description 1
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 1
- GEQBRULPNIVQPP-UHFFFAOYSA-N 2-[3,5-bis(1-phenylbenzimidazol-2-yl)phenyl]-1-phenylbenzimidazole Chemical compound C1=CC=CC=C1N1C2=CC=CC=C2N=C1C1=CC(C=2N(C3=CC=CC=C3N=2)C=2C=CC=CC=2)=CC(C=2N(C3=CC=CC=C3N=2)C=2C=CC=CC=2)=C1 GEQBRULPNIVQPP-UHFFFAOYSA-N 0.000 description 1
- CDBMGJUEACTJIC-UHFFFAOYSA-N 2-n,4-n,6-n-trinaphthalen-2-yl-2-n,4-n,6-n-triphenyl-1,3,5-triazine-2,4,6-triamine Chemical compound C1=CC=CC=C1N(C=1N=C(N=C(N=1)N(C=1C=CC=CC=1)C=1C=C2C=CC=CC2=CC=1)N(C=1C=CC=CC=1)C=1C=C2C=CC=CC2=CC=1)C1=CC=C(C=CC=C2)C2=C1 CDBMGJUEACTJIC-UHFFFAOYSA-N 0.000 description 1
- OGGKVJMNFFSDEV-UHFFFAOYSA-N 3-methyl-n-[4-[4-(n-(3-methylphenyl)anilino)phenyl]phenyl]-n-phenylaniline Chemical compound CC1=CC=CC(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)=C1 OGGKVJMNFFSDEV-UHFFFAOYSA-N 0.000 description 1
- AWXGSYPUMWKTBR-UHFFFAOYSA-N 4-carbazol-9-yl-n,n-bis(4-carbazol-9-ylphenyl)aniline Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(N(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 AWXGSYPUMWKTBR-UHFFFAOYSA-N 0.000 description 1
- DIVZFUBWFAOMCW-UHFFFAOYSA-N 4-n-(3-methylphenyl)-1-n,1-n-bis[4-(n-(3-methylphenyl)anilino)phenyl]-4-n-phenylbenzene-1,4-diamine Chemical compound CC1=CC=CC(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)N(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)=C1 DIVZFUBWFAOMCW-UHFFFAOYSA-N 0.000 description 1
- 229910001148 Al-Li alloy Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000284156 Clerodendrum quadriloculare Species 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 101000837344 Homo sapiens T-cell leukemia translocation-altered gene protein Proteins 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910019015 Mg-Ag Inorganic materials 0.000 description 1
- YNPNZTXNASCQKK-UHFFFAOYSA-N Phenanthrene Natural products C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 102100028692 T-cell leukemia translocation-altered gene protein Human genes 0.000 description 1
- JHYLKGDXMUDNEO-UHFFFAOYSA-N [Mg].[In] Chemical compound [Mg].[In] JHYLKGDXMUDNEO-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- XJHCXCQVJFPJIK-UHFFFAOYSA-M caesium fluoride Inorganic materials [F-].[Cs+] XJHCXCQVJFPJIK-UHFFFAOYSA-M 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 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
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- HLYTZTFNIRBLNA-LNTINUHCSA-K iridium(3+);(z)-4-oxopent-2-en-2-olate Chemical compound [Ir+3].C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O HLYTZTFNIRBLNA-LNTINUHCSA-K 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Inorganic materials [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- 239000013110 organic ligand Substances 0.000 description 1
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- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
Claims (21)
- 제1 전극 및 제2 전극 사이에 도펀트를 포함하는 발광층을 갖는 유기 전계 발광 소자에 있어서,상기 발광층은 2종 이상의 인광 호스트 물질을 포함하고, 상기 인광 호스트 물질은 발광층의 두께를 따라 점진적인 농도 구배를 갖도록 존재하는 것을 특징으로 하는 유기 전계 발광 소자.
- 제1항에 있어서, 상기 2종 이상의 인광 호스트 물질은 홀 수송 물질 및 전자 수송 물질을 포함하고, 상기 홀 수송 물질 및 전자 수송 물질은 발광층의 두께를 따라 점진적인 농도 구배를 갖도록 존재하는 것을 특징으로 하는 유기 전계 발광 소자.
- 제2항에 있어서, 상기 점진적인 농도 구배는 상기 발광층의 전자 수송층에서 홀 수송층으로의 두께 방향에 따라 전자 수송 물질이 점차적으로 감소하고, 홀 수송 물질이 점차적으로 증가하도록 분포되어 있는 것을 특징으로 하는 유기 전계 발광 소자.
- 제2항에 있어서, 상기 점진적인 농도 구배는 상기 발광층의 홀 수송층에서 전자 수송층으로의 두께 방향에 따라 전자 수송 물질이 점차적으로 증가하고, 홀 수송 물질이 점차적으로 감소하도록 분포되어 있는 것을 특징으로 하는 유기 전계 발광 소자.
- 제2항에 있어서, 상기 점진적인 농도 구배는 상기 발광층의 두께를 따라 홀 수송층에 접하는 부분에서는 인광 호스트로서 홀 수송 물질이 90중량% 이상이고, 전자 수송층에 접하는 부분에서는 인광 호스트로서 전자 수송 물질이 90중량% 이상인 것을 특징으로 하는 유기 전계 발광 소자.
- 제2항에 있어서, 상기 홀 수송 물질이 카바졸계 화합물인 것을 특징으로 하는 유기 전계 발광 소자.
- 제6항에 있어서, 상기 카바졸계 화합물이 1,3,5-트리카바졸릴벤젠, 4,4'-비스카바졸릴비페닐, 폴리비닐카바졸, m-비스카바졸릴페닐, 4,4'-비스카바졸릴-2,2'-디메틸비페닐, 4,4',4"-트리(N-카바졸릴)트리페닐아민, 1,3,5-트리(2-카바졸릴페 닐)벤젠, 1,3,5-트리스(2-카바졸릴-5-메톡시페닐)벤젠, 및 비스(4-카바졸릴페닐)실란으로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 유기 전계 발광 소자.
- 제2항에 있어서, 상기 전자 수송 물질이 유기 금속 착체, 스피로플루오렌계 화합물, 옥사디아졸계 화합물, 페난트롤린계 화합물, 트리아진계 화합물, 트리아졸계 화합물 중에서 선택된 하나 이상의 화합물인 것을 특징으로 하는 유기 전계 발광 소자.
- 제8항에 있어서, 상기 유기 금속 착체가 비스(8-하이드록시퀴놀라토)비페녹시 금속, 비스(8-하이드록시퀴놀라토)페녹시 금속, 비스(2-메틸-8-하이드록시퀴놀라토)비페녹시 금속, 비스(2-메틸-8-하이드록시퀴놀라토)페녹시 금속) 및 비스(2-(2-하이드록시페닐)퀴놀라토) 금속으로 이루어진 군으로부터 선택된 하나 이상이고, 상기 금속은 Al, Zn, Be, 또는 Ga인 것을 특징으로 하는 유기 전계 발광 소자.
- 제8항에 있어서, 상기 유기 금속 착체가 비스(8-하이드록시퀴놀라토)비페녹시 알루미늄, 비스(8-하이드록시퀴놀라토)페녹시 알루미늄, 비스(2-메틸-8-하이드록시퀴놀라토)비페녹시 알루미늄, 비스(2-메틸-8-하이드록시퀴놀라토)페녹시 알루미늄 또는 비스(2-(2-하이드록시페닐)퀴놀라토) 아연인 것을 특징으로 하는 유기 전계 발광 소자.
- 제8항에 있어서, 상기 스피로플루오렌(spirofluorene)계 화합물은 2개의 스피로플루오렌 사이에 연결 고리를 갖고 연결되는 구조로서, 상기 연결은 트리아졸, 옥사디아졸, 나프탈렌, 안트라센, 또는 페닐로 치환되고, 각 플루오렌의 9번 위치가 O, S, Se, N-R, P-R으로 치환된 구조이거나, 또는 2개의 스피로플루오렌 사이를 N-R 또는 P-R이 직접 연결해 주는 구조이고, 상기 R은 각각 H이거나, 또는 탄소수 1 내지 20개의 알킬기, 탄소수 1 내지 20개의 알킬기를 갖는 탄소수 5 내지 20의 아릴기, 탄소수 2 내지 20의 헤테로아릴기, 및 탄소수 1 내지 20의 알콕시기를 갖는 탄소수 6 내지 20의 아릴기로 이루어지는 군에서 선택되는 치환기인 것을 특징으로 하는 유기 전계 발광 소자.
- 제8항에 있어서, 상기 스피로플루오렌계 화합물이 2,5-디스피로바이플루오렌-1,3,4-옥사디아졸(2,5-Dispirobifluorene-1,3,4-oxadiazole)인것을 특징으로 하는 유기 전계 발광 소자.
- 제8항에 있어서, 상기 옥사디아졸계 화합물이 (4-비페닐일)-5-(4-터트부틸페닐)-1,3,4-옥사디아졸인 것을 특징으로 하는 유기 전계 발광 소자.
- 제8항에 있어서, 상기 페난트롤린계 화합물이 2,9-디메틸-4,7-디페닐-9,10-페난트롤린인 것을 특징으로 하는 유기 전계 발광 소자.
- 제8항에 있어서, 상기 트리아진계 화합물이 2,4,6-트리스(디아릴아미노)-1,3,5-트리아진, 2,4,6-트리스(디페닐아미노)-1,3,5-트리아진, 2,4,6-트리카바졸로-1,3,5-트리아진, 2,4,6-트리스(N-페닐-2-나프틸아미노)-1,3,5-트리아진, 2,4,6-트리스(N-페닐-1-나프틸아미노)-1,3,5-트리아진, 또는 2,4,6-트리스바이페닐-1,3,5-트리아진이고, 상기 트리아졸계 화합물이 3-페닐-4-(1'-나프틸)-5-페닐-1,2,4-트리아졸인 것을 특징으로 하는 유기 전계 발광 소자.
- 제4항에 있어서, 상기 홀 수송 층으로부터 발광층 두께의 1/2이 되는 부분까지 홀 수송 물질과 전자 수송 물질의 중량비는 9:1 에서 1:1 사이인 것을 특징으로 하는 유기 전계 발광 소자.
- 제3항에 있어서, 상기 전자 수송 층으로부터 발광층 두께의 1/2이 되는 부분까지 전자 수송 물질과 홀 수송 물질의 중량비는 9:1 에서 1:1 사이인 것을 특징으로 하는 유기 전계 발광 소자.
- 제1항에 있어서, 상기 발광층에서 인광 도펀트가, 백금, 아연, 이리듐 착체인 것을 특징으로 하는 유기 전계 발광 소자.
- 제18항에 있어서, 상기 이리듐 착체가 비스티에닐피리딘 아세틸아세토네이트 이리듐, 비스(벤조티에닐피리딘)아세틸아세토네이트 이리듐, 비스(2-페닐벤조티아졸)아세틸아세토네이트 이리듐, 비스(1-페닐이소퀴놀린) 이리듐 아세틸아세토네이트, 트리스(1-페닐이소퀴놀린)이리듐, 트리스(페닐피리딘) 이리듐, 트리스(2-비페닐피리딘) 이리듐, 트리스(3-비페닐피리딘) 이리듐, 트리스(4-비페닐피리딘) 이리듐으로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 유기 전계 발광 소자.
- 제1항에 있어서, 상기 제1전극과 발광층 사이에 홀 주입층 및 홀 수송층 중에서 선택된 하나 이상이 더 구비되는 것을 특징으로 하는 유기 전계 발광 소자.
- 제1항에 있어서, 상기 발광층과 제2전극 사이에 홀 블로킹층, 전자수송층 및 전자주입층 중에서 선택된 하나 이상이 더 구비되는 것을 특징으로 하는 유기 전계 발광 소자.
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