| Title: |
Efficient UV Organic Solid‐State Lasers with Ultra‐Short Wavelengths Based on Dispirofluorene‐Indenofluorene Isomers |
| Authors: |
Kaya, Yusei; Kim, Hyung-Suk; Ari, Denis; Mall-Haidaraly, Kevin; Hantonne, Isabelle; S. B. Karunathilaka, Buddhika; Abe, Ayano; Chitose, Youhei; Forget, Sébastien; Chenais, Sebastien; Poriel, Cyril; Mathevet, Fabrice; Adachi, Chihaya |
| Contributors: |
Kyushu University; Institut des Sciences Chimiques de Rennes (ISCR); Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes); Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS); Laboratoire de Physique des Lasers (LPL); Université Paris 13 (UP13)-Centre National de la Recherche Scientifique (CNRS)-Université Sorbonne Paris Nord; Institut Parisien de Chimie Moléculaire (IPCM); Chimie Moléculaire de Paris Centre (FR 2769); École normale supérieure - Paris (ENS-PSL); Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP); Université Paris Sciences et Lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris); Université Paris Sciences et Lettres (PSL)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL); Université Paris Sciences et Lettres (PSL)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS); The authors acknowledge the JSPS Grant-in-Aid for Specially Promoted Research (23H05406) and the International Leading Research (ILR) (23K20039), the ANR EVOLUTION (Grant No. N° ANR-22-CE07-0024), the ANR MELODIE (Grant No. N° ANR-23-CE06-0027-01), and the French National Center for Scientific Research (CNRS/IRP LUX-ERIT) for financial support.; ANR-23-CE06-0027,MELODIE,Polymères Émetteurs de Lumière Multifonctionnels pour la réalisation de Lasers et de Diodes Laser Organiques(2023); ANR-22-CE07-0024,Skelet_CyProp,Réorganisation de bicycles cyclopropaniques(2022) |
| Source: |
ISSN: 1616-301X. |
| Publisher Information: |
CCSD; Wiley |
| Publication Year: |
2025 |
| Subject Terms: |
Wavelength; Optoelectronics; UV emission; organic solid-state lasers; organic semiconductor lasers; dihydroindenofluorene; DFB lasers; [CHIM.MATE]Chemical Sciences/Material chemistry |
| Description: |
International audience ; The development of efficient UV organic solid‐state lasers (OSLs) remains a significant challenge, yet it is crucial for enabling advanced photonic technologies. This study investigates two dispirofluorene‐indenofluorene regioisomers, (2,1‐a)‐DSF(tBu)4‐IF (DSFIF‐syn) and (1,2‐b)‐DSF(tBu)4‐IF (DSFIF‐anti), to elucidate the impact of subtle structural differences on their solid‐state photophysical and lasing properties. Through a combination of experimental techniques and theoretical approaches, including comprehensive optical characterization and molecular dynamics simulations, it is demonstrated that DSFIF‐syn exhibits significantly reduced intermolecular aggregation compared to DSFIF‐anti, resulting in enhanced optical performance in solid‐state thin films. Remarkably, amplified spontaneous emission (ASE) is achieved at a record‐short wavelength of 365 nm with a low threshold of 4.5 µJ cm−2 (5000 W cm−2) in a PMMA blend film. Moreover, distributed feedback (DFB) laser devices incorporating a blend film of DSFIF‐syn dispersed in polystyrene (PS) enabled lasing at an unprecedentedly short wavelength of 358.5 nm, as well as a low lasing threshold of 0.7 µJ cm−2 (780 W cm−2) at 363.3 nm. These results demonstrate that dispirofluorene‐indenofluorene derivatives are highly promising UV laser dyes, highlighting isomeric control as a valuable molecular design strategy for advancing high‐performance organic lasers. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1002/adfm.202514060 |
| Availability: |
https://hal.science/hal-05242014; https://hal.science/hal-05242014v1/document; https://hal.science/hal-05242014v1/file/SQA%20Final%20REVISED%20final%20II%20yuejan.pdf; https://doi.org/10.1002/adfm.202514060 |
| Rights: |
http://creativecommons.org/licenses/by/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.BD135E3C |
| Database: |
BASE |