TY - JOUR
T1 - Enhanced Light–Matter Interaction and Polariton Relaxation by the Control of Molecular Orientation
AU - Ishii, Tomohiro
AU - Bencheikh, Fatima
AU - Forget, Sébastien
AU - Chénais, Sébastien
AU - Heinrich, Benoît
AU - Kreher, David
AU - Sosa Vargas, Lydia
AU - Miyata, Kiyoshi
AU - Onda, Ken
AU - Fujihara, Takashi
AU - Kéna-Cohen, Stéphane
AU - Mathevet, Fabrice
AU - Adachi, Chihaya
N1 - Funding Information:
The authors thank Pohang Accelerator Laboratory (PAL) for giving the opportunity to perform the GIWAXS measurements, MEST, and POSTECH for supporting these experiments; Dr. Hyungju Ahn for adjustments and help, and other colleagues from the 9A USAXS beamline for assistance. Part of this work was also supported by the CNRS (PICS N° 8085), France. This work was partially supported by JSPS KAKENHI Grant Numbers JP17H06375 and JP20H05106, JSPS Core to Core program S.K-C was supported by the Canada Research Chairs Program.
Funding Information:
The authors thank Pohang Accelerator Laboratory (PAL) for giving the opportunity to perform the GIWAXS measurements, MEST, and POSTECH for supporting these experiments; Dr. Hyungju Ahn for adjustments and help, and other colleagues from the 9A USAXS beamline for assistance. Part of this work was also supported by the CNRS (PICS N° 8085), France. This work was partially supported by JSPS KAKENHI Grant Numbers JP17H06375 and JP20H05106, JSPS Core to Core program S.K‐C was supported by the Canada Research Chairs Program.
Publisher Copyright:
© 2021 Wiley-VCH GmbH.
PY - 2021/11/18
Y1 - 2021/11/18
N2 - Exciton-polaritons, in which the electronic state of an excited organic molecule and a photonic state are strongly coupled, can form a Bose–Einstein condensate (BEC) at room temperature. However, so far, the reported thresholds of organic polariton BECs under optical excitation are as high as Pth = 11–500 μJ cm–2. One route toward lowering the condensation threshold is to increase the Rabi energy by aligning the molecular transition dipole moments. In this report, it is demonstrated that control of the orientation of a perylene-based discotic dye, which is able to self-organize in mesogenic columnar structures, can significantly enhance exciton–photon interaction and polariton relaxation rate in optical cavities. These results show the importance of the molecular orientation for strong light–matter interactions and provide a promising strategy toward the realization of an organic low threshold polariton BEC system and electrically driven organic polariton BEC.
AB - Exciton-polaritons, in which the electronic state of an excited organic molecule and a photonic state are strongly coupled, can form a Bose–Einstein condensate (BEC) at room temperature. However, so far, the reported thresholds of organic polariton BECs under optical excitation are as high as Pth = 11–500 μJ cm–2. One route toward lowering the condensation threshold is to increase the Rabi energy by aligning the molecular transition dipole moments. In this report, it is demonstrated that control of the orientation of a perylene-based discotic dye, which is able to self-organize in mesogenic columnar structures, can significantly enhance exciton–photon interaction and polariton relaxation rate in optical cavities. These results show the importance of the molecular orientation for strong light–matter interactions and provide a promising strategy toward the realization of an organic low threshold polariton BEC system and electrically driven organic polariton BEC.
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U2 - 10.1002/adom.202101048
DO - 10.1002/adom.202101048
M3 - Article
AN - SCOPUS:85115623013
SN - 2195-1071
VL - 9
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 22
M1 - 2101048
ER -