Managing local triplet excited states of boron-based TADF emitters for fast spin-flip process: toward highly efficient TADF-OLEDs with low efficiency roll-off

2021 ◽  
pp. 130224
Author(s):  
Young Hoon Lee ◽  
Youn-Seob Shin ◽  
Taehwan Lee ◽  
Jaehoon Jung ◽  
Jeong-Hwan Lee ◽  
...  
Keyword(s):  
Excited States ◽  
Highly Efficient ◽  
Spin Flip ◽  
Low Efficiency ◽  
Triplet Excited States ◽  
Fast Spin

Efficient organic light-emitting diodes based on iridium(III) complexes containing indolo[3,2,1-jk]carbazole derivatives with narrow emission bandwidths and low efficiency roll offs

2021 ◽  
Author(s):  
Xiang-Ji Liao ◽  
Jin-Jun Zhu ◽  
Li Yuan ◽  
Zhi-Ping Yan ◽  
Xu-Feng Luo ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Carbazole Derivatives ◽  
Highly Efficient ◽  
Organic Light ◽  
Low Efficiency ◽  
Narrow Emission

In this work, two cyclometalated ligands 2-(pyridin-2-yl)indolo[3,2,1-jk]carbazole (pyidcz) and 2-(4-(trifluoromethyl)pyridin-2-yl)indolo[3,2,1-jk]carbazole (tfpyidcz) using indolo[3,2,1-jk]carbazole unit were synthesized for highly efficient iridium(III) complexes (pyidcz)2Ir(tmd) and (tfpyidcz)2Ir(tmd) (tmd = 2,2,6,6-tetramethyl-3,5-heptanedione). The two Ir(III)...

Unconventional singlet fission materials

2021 ◽  
Author(s):  
Tobias Ullrich ◽  
Dominik Munz ◽  
Dirk M. Guldi
Keyword(s):  
Excited States ◽  
Singlet Fission ◽  
Triplet Excited States

Singlet fission (SF) is a photophysical downconversion pathway, in which a singlet excitation transforms into two triplet excited states.

Highly efficient orange-red electroluminescence of iridium complexes with good electron mobility

2017 ◽  
Vol 5 (32) ◽  
pp. 8150-8159 ◽  
Author(s):  
Hua-Bo Han ◽  
Rong-Zhen Cui ◽  
Yi-Ming Jing ◽  
Guang-Zhao Lu ◽  
You-Xuan Zheng ◽  
...  
Keyword(s):  
Current Efficiency ◽  
Electron Mobility ◽  
Quantum Yields ◽  
Iridium Complexes ◽  
Maximum Luminance ◽  
High Quantum ◽  
Highly Efficient ◽  
Maximum Current ◽  
Low Efficiency

Two orange-red iridium complexes with high quantum yields and good electron mobility were applied in efficient OLEDs showing a maximum luminance of 129 466 cd m−2, a maximum current efficiency of 62.96 cd A−1 with low efficiency roll-off.

Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy

2017 ◽  
Vol 122 (1) ◽  
pp. 185-193 ◽  
Author(s):  
Zhangrong Lou ◽  
Yuqi Hou ◽  
Kepeng Chen ◽  
Jianzhang Zhao ◽  
Shaomin Ji ◽  
...  
Keyword(s):  
Excited States ◽  
Quenching Effect ◽  
Triplet Excited States ◽  
Intramolecular Rotation

Study of the triplet excited states and DFT calculations of iridium(III) complexes with mixed ligands

2018 ◽  
Vol 1164 ◽  
pp. 164-171
Author(s):  
Naokazu Yoshikawa ◽  
Shoko Yamazaki ◽  
Natsumi Kato ◽  
Nobuko Kanehisa ◽  
Tsuyoshi Inoue ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Excited States ◽  
Mixed Ligands ◽  
Triplet Excited States

scholarly journals Rational Design of TADF Polymers Using a Donor-Acceptor Monomer with Enhanced TADF Efficiency Induced by the Energy Alignment of Charge Transfer and Local Triplet Excited States

2016 ◽  
Vol 4 (4) ◽  
pp. 597-607 ◽  
Author(s):  
Roberto S. Nobuyasu ◽  
Zhongjie Ren ◽  
Gareth C. Griffiths ◽  
Andrei S. Batsanov ◽  
Przemyslaw Data ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Rational Design ◽  
Donor Acceptor ◽  
Triplet Excited States
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