TY - GEN
T1 - Boron Derivatives as Deep Blue Fluorescent Materials for High Efficiency and Long Lifetime
AU - Lee, Kyung Hyung
AU - Lee, Jun Yeob
AU - Oh, Hyung Yoon
N1 - Publisher Copyright:
© 2019 SID.
PY - 2019
Y1 - 2019
N2 - Deep blue fluorescent organic light-emitting diodes were developed using boron derived 5,9-diphenyl-5H,9H[1,4]benzazaborino[2,3,4-kl]phenazaborine (DABNA) and 2,12‐ di‐tert‐butyl‐5,9‐bis(4‐(tert‐butyl)phenyl)‐5,9‐dihydro‐5,9‐diaza‐ 13b‐boranaphtho[3,2,1‐de]anthracene (t-DABNA) as fluorescent emitters rather than thermally activated delayed fluorescent emitters for long lifetime. The DABNA and t-DABNA boron emitters were doped in a 9,10-bis (1-naphtyl) anthracene (α-ADN) host to harvest singlet excitons only and stabilize triplet excitons for long periods. The t-DABNA emitter exhibits a high external quantum efficiency of 7.8% as a blue fluorescent emitter. The lifetime of the boron derived emitters was much longer than a blue emitter derived from pyrene. This work demonstrated the effectiveness of the boron derived emitters as deep blue fluorescent emitters.
AB - Deep blue fluorescent organic light-emitting diodes were developed using boron derived 5,9-diphenyl-5H,9H[1,4]benzazaborino[2,3,4-kl]phenazaborine (DABNA) and 2,12‐ di‐tert‐butyl‐5,9‐bis(4‐(tert‐butyl)phenyl)‐5,9‐dihydro‐5,9‐diaza‐ 13b‐boranaphtho[3,2,1‐de]anthracene (t-DABNA) as fluorescent emitters rather than thermally activated delayed fluorescent emitters for long lifetime. The DABNA and t-DABNA boron emitters were doped in a 9,10-bis (1-naphtyl) anthracene (α-ADN) host to harvest singlet excitons only and stabilize triplet excitons for long periods. The t-DABNA emitter exhibits a high external quantum efficiency of 7.8% as a blue fluorescent emitter. The lifetime of the boron derived emitters was much longer than a blue emitter derived from pyrene. This work demonstrated the effectiveness of the boron derived emitters as deep blue fluorescent emitters.
KW - Deep blue device.fluorescent emitter.lifetime.high efficiency
UR - https://www.scopus.com/pages/publications/85085615369
U2 - 10.1002/sdtp.13341
DO - 10.1002/sdtp.13341
M3 - Conference contribution
AN - SCOPUS:85085615369
T3 - Digest of Technical Papers - SID International Symposium
SP - 1924
EP - 1927
BT - Digest of Technical Papers - SID International Symposium
A2 - Fitzsimmons, Kelly Jean
PB - John Wiley and Sons Inc
T2 - SID Symposium, Seminar, and Exhibition 2019, Display Week 2019
Y2 - 12 May 2019 through 17 May 2019
ER -