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https://hdl.handle.net/20.500.14279/32838
Τίτλος: | Carbon Dot Synthesis in CYTOP Optical Fiber Using IR Femtosecond Laser Direct Writing and Its Luminescence Properties | Συγγραφείς: | Que, Ruyue Audibert, Jean-Frédéric Garcia-Caurel, Enrique Plantevin, Olivier Kalli, Kyriacos Lancry, Matthieu Poumellec, Bertrand Pansu, Robert B |
Major Field of Science: | Engineering and Technology | Field Category: | Electrical Engineering - Electronic Engineering - Information Engineering | Λέξεις-κλειδιά: | CYTOP;Carbon dots;Femtosecond laser;POF;Photoluminescence;Optical fiber sensor | Ημερομηνία Έκδοσης: | 27-Μαΐ-2024 | Πηγή: | Nanometals, 2024, vol 14, no. 11 | Volume: | 14 | Issue: | 11 | Περιοδικό: | Nanomaterials | Περίληψη: | Luminescent carbon dots (CDs) were locally synthesized in the core of CYTOP fibers using IR femtosecond laser direct writing (FLDW), a one-step simple method serving as a post-treatment of the pristine fiber. This approach enables the creation of several types of modifications such as ellipsoid voids. The CDs and photoluminescence (PL) distribute at the periphery of the voids. The PL spectral properties were studied through the excitation/emission matrix in the visible range and excitation/emission spectra in the UV/visible range. Our findings reveal the presence of at least three distinct luminescent species, facilitating a broad excitation range extending from UV to green, and light emission spanning from blue to red. The average laser power and dose influence the quantity and ratio of these luminescent CD species. Additionally, we measured the spatially resolved lifetime of the luminescence during and after the irradiation. We found longer lifetimes at the periphery of the laser-induced modified regions and shorter ones closer to the center, with a dominant lifetime ~2 ns. Notably, unlike many other luminophores, these laser-induced CDs are insensitive to oxygen, enhancing their potential for display or data storage applications. | URI: | https://hdl.handle.net/20.500.14279/32838 | ISSN: | 2079-4991 | DOI: | 10.3390/nano14110941 | Rights: | Attribution 4.0 International | Type: | Article | Affiliation: | Université Paris-Saclay École Polytechnique Cyprus University of Technology Institut de Chimie Moléculaire et des Matériaux d’Orsay |
Publication Type: | Peer Reviewed |
Εμφανίζεται στις συλλογές: | Άρθρα/Articles |
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