TY - JOUR
T1 - Highly efficient electroluminescence from a solution-processable thermally activated delayed fluorescence emitter
AU - Wada, Yoshimasa
AU - Shizu, Katsuyuki
AU - Kubo, Shosei
AU - Suzuki, Katsuaki
AU - Tanaka, Hiroyuki
AU - Adachi, Chihaya
AU - Kaji, Hironori
N1 - Publisher Copyright:
© 2015 AIP Publishing LLC.
PY - 2015/11/2
Y1 - 2015/11/2
N2 - We developed a thermally activated delayed fluorescence (TADF) emitter, 2,4,6-tris(4-(9,9-dimethylacridan-10-yl)phenyl)-1,3,5-triazine (3ACR-TRZ), suitable for use in solution-processed organic light-emitting diodes (OLEDs). When doped into 4,4′-bis(carbazol-9-yl)biphenyl (CBP) host at 16 wt. %, 3ACR-TRZ showed a high photoluminescence quantum yield of 98%. Transient photoluminescence decay measurements of the 16 wt. % 3ACR-TRZ:CBP film confirmed that 3ACR-TRZ exhibits efficient TADF with a triplet-to-light conversion efficiency of 96%. This high conversion efficiency makes 3ACR-TRZ attractive as an emitting dopant in OLEDs. Using 3ACR-TRZ as an emitter, we fabricated a solution-processed OLED exhibiting a maximum external quantum efficiency of 18.6%.
AB - We developed a thermally activated delayed fluorescence (TADF) emitter, 2,4,6-tris(4-(9,9-dimethylacridan-10-yl)phenyl)-1,3,5-triazine (3ACR-TRZ), suitable for use in solution-processed organic light-emitting diodes (OLEDs). When doped into 4,4′-bis(carbazol-9-yl)biphenyl (CBP) host at 16 wt. %, 3ACR-TRZ showed a high photoluminescence quantum yield of 98%. Transient photoluminescence decay measurements of the 16 wt. % 3ACR-TRZ:CBP film confirmed that 3ACR-TRZ exhibits efficient TADF with a triplet-to-light conversion efficiency of 96%. This high conversion efficiency makes 3ACR-TRZ attractive as an emitting dopant in OLEDs. Using 3ACR-TRZ as an emitter, we fabricated a solution-processed OLED exhibiting a maximum external quantum efficiency of 18.6%.
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U2 - 10.1063/1.4935237
DO - 10.1063/1.4935237
M3 - Article
AN - SCOPUS:84946721235
SN - 0003-6951
VL - 107
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 18
M1 - 183303
ER -