| Autor: |
Stan CS; Faculty of Chemical Engineering and Environmental Protection, Gh. Asachi Technical University of Iasi, D. Mangeron 73 Ave., 700050 Iasi, Romania., Elouakassi N; Innovative Materials for Energy and Sustainable Development (IMED-Lab), Faculty of Science and Technology, Cadi Ayyad University, Av. Abdelkrim Khattabi, B.P. 511, Marrakech 40000, Morocco., Albu C; Faculty of Chemical Engineering and Environmental Protection, Gh. Asachi Technical University of Iasi, D. Mangeron 73 Ave., 700050 Iasi, Romania., Conchi AO; Conditions Extremes Matériaux Haute Temperature et Irradiation (CEMHTI), UPR 3079, CNRS, Université d'Orléans, 45100 Orleans, France., Coroaba A; Centre of Advanced Research in Bionanoconjugates and Biopolymers, 'Petru Poni' Institute of Macromolecular Chemistry, Grigore Ghica Voda 41A Alley, 700487 Iasi, Romania., Ursu LE; Centre of Advanced Research in Bionanoconjugates and Biopolymers, 'Petru Poni' Institute of Macromolecular Chemistry, Grigore Ghica Voda 41A Alley, 700487 Iasi, Romania., Popa M; Faculty of Chemical Engineering and Environmental Protection, Gh. Asachi Technical University of Iasi, D. Mangeron 73 Ave., 700050 Iasi, Romania.; Academy of Romanian Scientists, Ilfov Street, 050054 Bucharest, Romania., Kaddami H; Innovative Materials for Energy and Sustainable Development (IMED-Lab), Faculty of Science and Technology, Cadi Ayyad University, Av. Abdelkrim Khattabi, B.P. 511, Marrakech 40000, Morocco.; Sustainable Materials Research Center (SusMat-RC), Lot 660-Hay Moulay Rachid, Ben Guerir 43150, Morocco., Almaggoussi A; Innovative Materials for Energy and Sustainable Development (IMED-Lab), Faculty of Science and Technology, Cadi Ayyad University, Av. Abdelkrim Khattabi, B.P. 511, Marrakech 40000, Morocco.; Applied Chemistry and Engineering Research Centre of Excellence (ACER CoE), Advanced Organic Optoelectronic Laboratory, Mohammed VI Polytechnic University (UM6P), Lot 660-Hay Moulay Rachid, Ben Guerir 43150, Morocco. |
| Abstrakt: |
In this work, photoluminescent (PL) carbon nano dots (CNDs) prepared from argan waste were embedded in highly optical transparent poly(styrene-co-acrylonitrile) (PSA) and cyclo-olefin copolymer (COC) matrices, which were further processed into thin films. In the first step, the luminescent CNDs were prepared through thermal processing of fine-groundargan waste, followed, in the second step, by direct dispersion in the polymer solutions, obtained by solving PSA and COC in selected solvents. These two polymer matrices were selected due to their high optical transparency, resilience to various environmental factors, and ability to be processed as quality thin films. The structural configuration of the CNDs was investigated through EDX, XPS, and FTIR, while DLS, HR-SEM, and STEM were used for their morphology investigation. The luminescence of the prepared CNDs and resulted polymer nanocomposites was thoroughly investigated through steady-state, absolute PLQY, and lifetime fluorescence. The quality of the resulted CND-polymer nanocomposite thin films was evaluated through AFM. The prepared highly luminescent thin films with a PL conversion efficiency of 30% are intended to be applied as outer photonic conversion layers on solar PV cells for increasing their conversion efficiency through valorization of the UV component of the solar radiation. |
