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Longo AV, Hamja A, Forget S, Chenais S. 80-μs pulsewidth from a circulation-free diode-pumped liquid organic laser limited by thermal blooming. OPTICS EXPRESS 2023; 31:23533-23541. [PMID: 37475434 DOI: 10.1364/oe.480590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 12/08/2022] [Indexed: 07/22/2023]
Abstract
Continuous-wave laser emission is challenging to obtain in organic lasers, whether in the solid or liquid form, a limitation caused by long-lived triplet states and by thermal effects. In liquid dye lasers, both issues can be fixed by rapidly flowing the dye, which is technically complex and prevents those lasers to be further miniaturized or easily integrated. Here we address the issue of the maximal pulsewidth that can be obtained in liquid dye lasers in the absence of any dye flow, in a compact and cost-effective diode-pumped laser system. Pulses as long as 80 μs have been obtained, thanks to the combination of a hemispherical resonator design, almost insensitive to thermal-lens effects, and an intentional mismatch between pump and cavity spatial modes. The limitation in pulse duration is shown to be entirely due to thermal blooming, and more specifically to diffraction losses brought by the spherical aberration of the thermal lens.
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2
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Kim KH, Park MJ, Kim JH. Crack-Assisted Charge Injection into Solvent-Free Liquid Organic Semiconductors via Local Electric Field Enhancement. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3349. [PMID: 32731446 PMCID: PMC7435465 DOI: 10.3390/ma13153349] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/27/2020] [Accepted: 07/27/2020] [Indexed: 11/17/2022]
Abstract
Non-volatile liquid organic semiconducting materials have received much attention as emerging functional materials for organic electronic and optoelectronic devices due to their remarkable advantages. However, charge injection and transport processes are significantly impeded at interfaces between electrodes and liquid organic semiconductors, resulting in overall lower performance compared to conventional solid-state electronic devices. Here we successfully demonstrate efficient charge injection into solvent-free liquid organic semiconductors via cracked metal structures with a large number of edges leading to local electric field enhancement. For this work, thin metal films on deformable polymer substrates were mechanically stretched to generate cracks on the metal surfaces in a controlled manner, and charge injection properties into a typical non-volatile liquid organic semiconducting material, (9-2-ethylhexyl)carbazole (EHCz), were investigated in low bias region (i.e., ohmic current region). It was found that the cracked structures significantly increased the current density at a fixed external bias voltage via the local electric field enhancement, which was strongly supported by field intensity calculation using COMSOL Multiphysics software. We anticipate that these results will significantly contribute to the development and further refinement of various organic electronic and optoelectronic devices based on non-volatile liquid organic semiconducting materials.
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Affiliation(s)
- Kyoung-Hwan Kim
- Department of Energy Systems Research, Ajou University, Suwon 16499, Korea; (K.-H.K.); (M.-J.P.)
| | - Myung-June Park
- Department of Energy Systems Research, Ajou University, Suwon 16499, Korea; (K.-H.K.); (M.-J.P.)
- Department of Chemical Engineering, Ajou University, Suwon 16499, Korea
| | - Ju-Hyung Kim
- Department of Energy Systems Research, Ajou University, Suwon 16499, Korea; (K.-H.K.); (M.-J.P.)
- Department of Chemical Engineering, Ajou University, Suwon 16499, Korea
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3
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Jung W, Kong BJ, Hong S, Kim T, Oh K. Enhancement of the lasing efficiency of vitamin B 2 in a highly polar organic solvent via DNA-lipid complex. OPTICS LETTERS 2018; 43:4021-4024. [PMID: 30106942 DOI: 10.1364/ol.43.004021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 07/19/2018] [Indexed: 06/08/2023]
Abstract
We experimentally demonstrated a green liquid laser at the wavelength of 570 nm, utilizing the optical gain of vitamin B2 in a highly polar organic solvent, and proposed an efficient method to enhance its lasing efficiency by adding DNA-lipid complex (DNA-CTMA) in the solution. Optical properties of vitamin B2 in the hexafluoro-2-propanol solvents were investigated by adding various amounts of DNA-CTMA in terms of the UV-visible absorbance, the visible emission, and the fluorescence lifetime. A Fabry-Perot cavity was built to obtain the laser oscillation at 570 nm using a pulsed pump source at the wavelength of 450 nm, 5 ns pulse duration, and 10 Hz repetition rate. By adding DNA-CTMA, both the output power and slope efficiency were enhanced along with a significant reduction of the lasing threshold pump power. The proposed scheme could open new potential for highly efficient biolasers.
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5
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Lee KJ, Woo JH, Kim E, Xiao Y, Su X, Mazur LM, Attias AJ, Fages F, Cregut O, Barsella A, Mathevet F, Mager L, Wu JW, D'Aléo A, Ribierre JC. Electronic energy and electron transfer processes in photoexcited donor-acceptor dyad and triad molecular systems based on triphenylene and perylene diimide units. Phys Chem Chem Phys 2016; 18:7875-87. [PMID: 26911420 DOI: 10.1039/c5cp06279a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigate the photophysical properties of organic donor-acceptor dyad and triad molecular systems based on triphenylene and perylene diimide units linked by a non-conjugated flexible bridge in solution using complementary optical spectroscopy techniques. When these molecules are diluted in dichloromethane solution, energy transfer from the triphenylene to the perylene diimide excited moieties is evidenced by time-resolved fluorescence measurements resulting in a quenching of the emission from the triphenylene moieties. Simultaneously, another quenching process that affects the emission from both donor and acceptor units is observed. Solution ultrafast transient absorption measurements provide evidence of photo-induced charge transfer from either the donor or the acceptor depending upon the excitation. Overall, the analysis of the detailed time-resolved spectroscopic measurements carried out in the dyad and triad systems as well as in the triphenylene and perylene diimide units alone provides useful information both to better understand the relations between energy and charge transfer processes with molecular structures, and for the design of future functional dyad and triad architectures based on donor and acceptor moieties for organic optoelectronic applications.
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Affiliation(s)
- K J Lee
- Department of Physics, CNRS-Ewha International Research Center, Ewha Womans University, Seoul 120-750, Korea
| | - J H Woo
- Department of Physics, CNRS-Ewha International Research Center, Ewha Womans University, Seoul 120-750, Korea and Center for Length, Division of Physical Metrology, Korea Research Institute of Standards and Science (KRISS), 267 Gajeong-ro, Yuseong-gu, Daejeon, 305-340, South Korea
| | - E Kim
- Department of Physics, CNRS-Ewha International Research Center, Ewha Womans University, Seoul 120-750, Korea
| | - Y Xiao
- Institut Parisien de Chimie Moléculaire, Chimie des Polymères, UMR CNRS 8232, Sorbonne Universités - Université Pierre and Marie Curie, 4 place Jussieu, Paris, France
| | - X Su
- Institut Parisien de Chimie Moléculaire, Chimie des Polymères, UMR CNRS 8232, Sorbonne Universités - Université Pierre and Marie Curie, 4 place Jussieu, Paris, France
| | - L M Mazur
- Institut Parisien de Chimie Moléculaire, Chimie des Polymères, UMR CNRS 8232, Sorbonne Universités - Université Pierre and Marie Curie, 4 place Jussieu, Paris, France and Advanced Materials Engineering and Modelling Group, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - A-J Attias
- Institut Parisien de Chimie Moléculaire, Chimie des Polymères, UMR CNRS 8232, Sorbonne Universités - Université Pierre and Marie Curie, 4 place Jussieu, Paris, France
| | - F Fages
- Aix Marseille Université, CNRS, CINaM UMR 7325, Campus de Luminy, Case 913, 13288 Marseille, France.
| | - O Cregut
- CNRS-IPCMS, Université de Strasbourg, 23 Rue du Loess, Strasbourg, France
| | - A Barsella
- CNRS-IPCMS, Université de Strasbourg, 23 Rue du Loess, Strasbourg, France
| | - F Mathevet
- Institut Parisien de Chimie Moléculaire, Chimie des Polymères, UMR CNRS 8232, Sorbonne Universités - Université Pierre and Marie Curie, 4 place Jussieu, Paris, France
| | - L Mager
- CNRS-IPCMS, Université de Strasbourg, 23 Rue du Loess, Strasbourg, France
| | - J W Wu
- Department of Physics, CNRS-Ewha International Research Center, Ewha Womans University, Seoul 120-750, Korea
| | - A D'Aléo
- Aix Marseille Université, CNRS, CINaM UMR 7325, Campus de Luminy, Case 913, 13288 Marseille, France.
| | - J-C Ribierre
- Department of Physics, CNRS-Ewha International Research Center, Ewha Womans University, Seoul 120-750, Korea
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Allain C, Piard J, Brosseau A, Han M, Paquier J, Marchandier T, Lequeux M, Boissière C, Audebert P. Fluorescent and Electroactive Low-Viscosity Tetrazine-Based Organic Liquids. ACS APPLIED MATERIALS & INTERFACES 2016; 8:19843-19846. [PMID: 27434378 DOI: 10.1021/acsami.6b04677] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
New fluorescent molecular liquids with a tetrazine core have been prepared. These compounds remain liquid at least down to -60 °C and display very low viscosities (28 mPa.s for liquid 1, 58 mPa.s for liquid 2). Both compounds remain fluorescent in the condensed phase. For liquid 1, intermolecular quenching is observed to a certain extent, whereas liquid 2 displays similar photophysical properties in dilute solution and in neat film.
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Affiliation(s)
| | | | | | | | | | | | | | - Cédric Boissière
- Laboratoire Chimie de la Matière Condensée, Collège de France, UPMC, CNRS , 75005 Paris, France
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7
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Montbarbon E, Sguerra F, Bertrand GHV, Magnier É, Coulon R, Pansu RB, Hamel M. N
-(2-Ethylhexyl)carbazole: A New Fluorophore Highly Suitable as a Monomolecular Liquid Scintillator. Chemistry 2016; 22:12074-80. [DOI: 10.1002/chem.201601749] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Eva Montbarbon
- CEA, LIST; Laboratoire Capteurs & Architectures Electroniques; CEA Saclay; 91191 Gif-sur-Yvette cedex France
- Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires (CNRS UMR 8531); École Normale Supérieure de Cachan; 61 Avenue du Président Wilson 94235 Cachan cedex France
- Doctoral School INTERFACES; Paris-Saclay University; Saclay France
| | - Fabien Sguerra
- CEA, LIST; Laboratoire Capteurs & Architectures Electroniques; CEA Saclay; 91191 Gif-sur-Yvette cedex France
| | - Guillaume H. V. Bertrand
- CEA, LIST; Laboratoire Capteurs & Architectures Electroniques; CEA Saclay; 91191 Gif-sur-Yvette cedex France
| | - Élodie Magnier
- CEA, LIST; Laboratoire Capteurs & Architectures Electroniques; CEA Saclay; 91191 Gif-sur-Yvette cedex France
| | - Romain Coulon
- CEA, LIST; Laboratoire Capteurs & Architectures Electroniques; CEA Saclay; 91191 Gif-sur-Yvette cedex France
| | - Robert B. Pansu
- Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires (CNRS UMR 8531); École Normale Supérieure de Cachan; 61 Avenue du Président Wilson 94235 Cachan cedex France
| | - Matthieu Hamel
- CEA, LIST; Laboratoire Capteurs & Architectures Electroniques; CEA Saclay; 91191 Gif-sur-Yvette cedex France
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Ribierre JC, Zhao L, Inoue M, Schwartz PO, Kim JH, Yoshida K, Sandanayaka ASD, Nakanotani H, Mager L, Méry S, Adachi C. Low threshold amplified spontaneous emission and ambipolar charge transport in non-volatile liquid fluorene derivatives. Chem Commun (Camb) 2016; 52:3103-6. [DOI: 10.1039/c5cc08331a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ambipolar charge transport and low threshold amplified spontaneous emission are observed in novel highly fluorescent liquid fluorene derivatives.
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