TY - JOUR
T1 - Stable pure-blue hyperfluorescence oleds
AU - Chan, Chin Yiu
AU - Lee, Yi Ting
AU - Tanaka, Masaki
AU - Wong, Yiu Wing
AU - Nakanotani, Hajime
AU - Adachi, Chihaya
N1 - Publisher Copyright:
© 2021 SID.
PY - 2021
Y1 - 2021
N2 - Organic light-emitting diodes (OLEDs) are a promising lightemitting technology useful for various display applications1,2. Despite great progress in this field3-12, there is an ongoing challenge to realize high performance blue OLEDs with efficiency, good color purity, and device lifetime. Here, we report pure-blue (CIEx,y color coordinates of [0.13, 0.16]) OLEDs with high-efficiency (external quantum efficiency of 32 % at 1000 cd m–2), narrow-emission (full-width half maximum of 19 nm), and good stability (LT95 of 18 hours at an initial luminance of 1000 cd m–2). The design is based on a two-unit stacked tandem hyperfluorescence (HF)-OLED with an improved singlet-excited energy transfer process from a sky-blue TADF assistant dopant (AD) (HDT-1) to a pure-blue terminal emitter (TE) (v-DABNA). Further, with sophisticated control of device architectures and materials combination, we report improved OLEDs.
AB - Organic light-emitting diodes (OLEDs) are a promising lightemitting technology useful for various display applications1,2. Despite great progress in this field3-12, there is an ongoing challenge to realize high performance blue OLEDs with efficiency, good color purity, and device lifetime. Here, we report pure-blue (CIEx,y color coordinates of [0.13, 0.16]) OLEDs with high-efficiency (external quantum efficiency of 32 % at 1000 cd m–2), narrow-emission (full-width half maximum of 19 nm), and good stability (LT95 of 18 hours at an initial luminance of 1000 cd m–2). The design is based on a two-unit stacked tandem hyperfluorescence (HF)-OLED with an improved singlet-excited energy transfer process from a sky-blue TADF assistant dopant (AD) (HDT-1) to a pure-blue terminal emitter (TE) (v-DABNA). Further, with sophisticated control of device architectures and materials combination, we report improved OLEDs.
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U2 - 10.1002/sdtp.14653
DO - 10.1002/sdtp.14653
M3 - Conference article
AN - SCOPUS:85113868114
SN - 0097-966X
VL - 52
SP - 224
EP - 227
JO - Digest of Technical Papers - SID International Symposium
JF - Digest of Technical Papers - SID International Symposium
IS - 1
T2 - 58th International Symposium on Digest of Technical Papers, ICDT 2021
Y2 - 17 May 2021 through 21 May 2021
ER -