scholarly journals Direct Transition from Triplet Excitons to Hybrid Light–Matter States via Triplet–Triplet Annihilation

2021 ◽  
Author(s):  
Chen Ye ◽  
Suman Mallick ◽  
Manuel Hertzog ◽  
Markus Kowalewski ◽  
Karl Börjesson
Keyword(s):  
Direct Transition ◽  
Triplet Excitons ◽  
Triplet Triplet Annihilation

Degradation of fluorescent organic light emitting diodes caused by quenching of singlet and triplet excitons

2020 ◽  
Vol 8 (42) ◽  
pp. 14873-14879
Author(s):  
Duy Cong Le ◽  
Duong Dai Nguyen ◽  
Savanna Lloyd ◽  
Toshi-kazu Suzuki ◽  
Hideyuki Murata
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Singlet Exciton ◽  
Organic Light ◽  
Positively Charged ◽  
Triplet Excitons ◽  
Triplet Triplet Annihilation

The initial luminescence loss of fluorescent OLEDs utilizing triplet–triplet annihilation is not only caused by quenching of singlet exciton with neutral quenchers but also by that of triplet excitons with positively charged quenchers.

Simultaneous harvesting of triplet excitons in OLEDs by both guest and host materials with an intramolecular charge-transfer feature via triplet–triplet annihilation

2015 ◽  
Vol 3 (27) ◽  
pp. 6970-6978 ◽  
Author(s):  
Xujun Zheng ◽  
Qiming Peng ◽  
Jie Lin ◽  
Yi Wang ◽  
Jie Zhou ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Host Materials ◽  
Heavily Doped ◽  
Triplet Excitons ◽  
Triplet Triplet Annihilation

Triplet excitons could be utilized by both guest and host materials with an ICT feature via the TTA process in heavily doped OLEDs.

scholarly journals Direct Evidence of a Transition from Triplet Excitons to Hybrid Light-Matter States via Triplet-Triplet Annihilation

2020 ◽  
Author(s):  
Chen Ye ◽  
Suman Mallick ◽  
Markus Kowalewski ◽  
Karl Börjesson
Keyword(s):  
Angular Momentum ◽  
Total Angular Momentum ◽  
Direct Evidence ◽  
Optical Cavity ◽  
Strong Coupling Regime ◽  
Singlet Excited State ◽  
Exciton Polaritons ◽  
Excitonic States ◽  
Triplet Excitons ◽  
Triplet Triplet Annihilation

In the enclosed manuscript, we embed a triplet-triplet annihilator inaccessible molecule inside an optical cavity. The system reaches the strong coupling regime, and the formed polariton has a reduced energy compared to the molecular singlet excited state, making triplet-triplet annihilation exothermic and readily observable. By the experimentally realized on-off effect, we show unambiguously that triplet excitons can annihilate directly into exciton-polaritons, without going through the singlet manifold. We further demonstrate that the total angular momentum is conserved in exciton to polariton triplet-triplet annihilation, thus theoretically explaining the feasibility of annihilating excitonic states to hybrid light-matter states.<br>

scholarly journals Direct Evidence of a Transition from Triplet Excitons to Hybrid Light-Matter States via Triplet-Triplet Annihilation

2020 ◽  
Author(s):  
Chen Ye ◽  
Suman Mallick ◽  
Markus Kowalewski ◽  
Karl Börjesson
Keyword(s):  
Angular Momentum ◽  
Total Angular Momentum ◽  
Direct Evidence ◽  
Optical Cavity ◽  
Strong Coupling Regime ◽  
Singlet Excited State ◽  
Exciton Polaritons ◽  
Excitonic States ◽  
Triplet Excitons ◽  
Triplet Triplet Annihilation

In the enclosed manuscript, we embed a triplet-triplet annihilator inaccessible molecule inside an optical cavity. The system reaches the strong coupling regime, and the formed polariton has a reduced energy compared to the molecular singlet excited state, making triplet-triplet annihilation exothermic and readily observable. By the experimentally realized on-off effect, we show unambiguously that triplet excitons can annihilate directly into exciton-polaritons, without going through the singlet manifold. We further demonstrate that the total angular momentum is conserved in exciton to polariton triplet-triplet annihilation, thus theoretically explaining the feasibility of annihilating excitonic states to hybrid light-matter states.<br>

TRIPLET EXCITONS IN MEM(TCNQ)2

1983 ◽  
Vol 44 (C3) ◽  
pp. C3-1383-C3-1385
Author(s):  
S. Oostra ◽  
P. De Lange ◽  
R. J.J. Visser
Keyword(s):  
Triplet Excitons

Molecular vibration assisted triplet-triplet annihilation nir-upconversion luminescence of fluorescein

2019 ◽  
Vol 96 ◽  
pp. 109286
Author(s):  
Abhishek Kumar ◽  
Luís Pinto da Silva ◽  
Joaquim C.G. Esteves da Silva ◽  
Kaushal Kumar
Keyword(s):  
Upconversion Luminescence ◽  
Molecular Vibration ◽  
Triplet Triplet Annihilation

Room Temperature Phosphorescence vs Triplet–Triplet Annihilation in N-Substituted Acridone Solids

2021 ◽  
pp. 6431-6438
Author(s):  
Ehsan Hamzehpoor ◽  
Cory Ruchlin ◽  
Yuze Tao ◽  
Jorge Eduardo Ramos-Sanchez ◽  
Hatem M. Titi ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Triplet Triplet Annihilation

Why Triage the Materials with Low Luminescence Quantum Efficiency: The Use of 35Cbz4BzCN as a Universal Host for Organic Light Emitting Diode through Effective Triplet Energy Transfer

2021 ◽  
Author(s):  
Yi-Mei Huang ◽  
Tse-Ying Chen ◽  
Deng-Gao Chen ◽  
Hsuan-Chi Liang ◽  
Cheng-Ham Wu ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Delayed Fluorescence ◽  
Triplet Energy ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Thermally Activated ◽  
Triplet Energy Transfer ◽  
Triplet Lifetime ◽  
Triplet Excitons

35Cbz4BzCN, a novel universal host with long triplet lifetime, has been developed. The triplet excitons in 35Cbz4BzCN can be effectively harvested by phosphorescence and thermally activated delayed fluorescence emitters. In...

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