抄録
A thermally activated delayed fluorescence (TADF) carbazole dendrimer (tBuG2TAZ) doped in a carbazole dendrimer host (G3Ph, G4Ph) was employed as an emissive layer (EML) in an OLED device with fully solution processed organic layers. Green (l MAX = 502 nm) emission with a maximum external efficiency (EQE MAX ) of 16.1% was achieved when tBuG2TAZ was doped in G3Ph. This value was higher than the previously reported OLED device with a neat film of tBuG2TAZ as an EML because of the higher PLQY due to suppressed concentration quenching. The TADF-active carbazole dendrimer doped in a carbazole host film shows excellent miscibility and solvent resistance to ethanol. On the other hand, when a small molecule (rubrene) was doped in the carbazole dendrimer, significant dissolution of rubrene was observed after rinsing the doped film with ethanol. This shows the importance of the solvent resistivity of a dopant emitter when another film is solution-processed onto the doped film. The ''doping dendrimer in dendrimer'' concept is a new concept to allow fabrication of fully solution-processed TADF OLEDs.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 1097-1103 |
| ページ数 | 7 |
| ジャーナル | Materials Chemistry Frontiers |
| 巻 | 2 |
| 発行部数 | 6 |
| DOI | |
| 出版物ステータス | 出版済み - 1 1 2018 |
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All Science Journal Classification (ASJC) codes
- Materials Chemistry
- Materials Science(all)
これを引用
A dendrimer emitter doped in a dendrimer host : Efficient thermally activated delayed fluorescence OLEDs with fully-solution processed organic-layers. / Albrecht, Ken; Matsuoka, K.; Fujita, Katsuhiko; Yamamoto, K.
：: Materials Chemistry Frontiers, 巻 2, 番号 6, 01.01.2018, p. 1097-1103.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - A dendrimer emitter doped in a dendrimer host
T2 - Efficient thermally activated delayed fluorescence OLEDs with fully-solution processed organic-layers
AU - Albrecht, Ken
AU - Matsuoka, K.
AU - Fujita, Katsuhiko
AU - Yamamoto, K.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - A thermally activated delayed fluorescence (TADF) carbazole dendrimer (tBuG2TAZ) doped in a carbazole dendrimer host (G3Ph, G4Ph) was employed as an emissive layer (EML) in an OLED device with fully solution processed organic layers. Green (l MAX = 502 nm) emission with a maximum external efficiency (EQE MAX ) of 16.1% was achieved when tBuG2TAZ was doped in G3Ph. This value was higher than the previously reported OLED device with a neat film of tBuG2TAZ as an EML because of the higher PLQY due to suppressed concentration quenching. The TADF-active carbazole dendrimer doped in a carbazole host film shows excellent miscibility and solvent resistance to ethanol. On the other hand, when a small molecule (rubrene) was doped in the carbazole dendrimer, significant dissolution of rubrene was observed after rinsing the doped film with ethanol. This shows the importance of the solvent resistivity of a dopant emitter when another film is solution-processed onto the doped film. The ''doping dendrimer in dendrimer'' concept is a new concept to allow fabrication of fully solution-processed TADF OLEDs.
AB - A thermally activated delayed fluorescence (TADF) carbazole dendrimer (tBuG2TAZ) doped in a carbazole dendrimer host (G3Ph, G4Ph) was employed as an emissive layer (EML) in an OLED device with fully solution processed organic layers. Green (l MAX = 502 nm) emission with a maximum external efficiency (EQE MAX ) of 16.1% was achieved when tBuG2TAZ was doped in G3Ph. This value was higher than the previously reported OLED device with a neat film of tBuG2TAZ as an EML because of the higher PLQY due to suppressed concentration quenching. The TADF-active carbazole dendrimer doped in a carbazole host film shows excellent miscibility and solvent resistance to ethanol. On the other hand, when a small molecule (rubrene) was doped in the carbazole dendrimer, significant dissolution of rubrene was observed after rinsing the doped film with ethanol. This shows the importance of the solvent resistivity of a dopant emitter when another film is solution-processed onto the doped film. The ''doping dendrimer in dendrimer'' concept is a new concept to allow fabrication of fully solution-processed TADF OLEDs.
UR - http://www.scopus.com/inward/record.url?scp=85049992743&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85049992743&partnerID=8YFLogxK
U2 - 10.1039/C7QM00579B
DO - 10.1039/C7QM00579B
M3 - Article
AN - SCOPUS:85049992743
VL - 2
SP - 1097
EP - 1103
JO - Materials Chemistry Frontiers
JF - Materials Chemistry Frontiers
SN - 2052-1537
IS - 6
ER -