1. C. S. Stan, C. Albu, M. Popa, NANOCOMPOSITE BASED ON PHOTO-EMISSIVE CARBON NANOSTRUCTURES AND CYCLIC-OLEFIN COPOLYMERS
(c) nov.2024 stan.c.s.
Patents (requested/granted)
The patent request refers to a nanocomposite with intense photoluminescent emission located in the 445 - 467 nm range depending on the wavelength of the UV excitation (330 - 400 nm), with high transparency in the optical/UV range and processability in thin films, based on carbon nanostructures and cyclic-olefin copolymers.The invention describes the preparation of the photoemissive nanocomposite. The photoemissive nanocomposite can be deposited by spray or spin coating techniques in thin layers, thus obtaining photonic conversion mediums applicable in the field of optoelectronic devices (light sources, photovoltaic solar cells, etc.).
Integration of photonic conversion layers based on photoemissive nanostructured materials for improving sunlight harvesting ability of solar cells
Project code: COFUND-LEAP-RE-NANOSOLARCELL, RO contract: ERANET 293/2022
2. C. S. Stan, C. Albu, M. Popa, M. C. Ania Ovin; Preparation method of a photonic conversion medium for improving the efficiency of the photovoltaic solar panels; RO O.S.I.M. reg. no. A/00607 / 11.10.2024; EU. Patent Office (EPO) reg. no. 24464009.0/EP24464009 / 30.10.2024.
The invention refers to a photonic conversion medium based on carbon nanostructures doped with bismuth (CNS:Bi), introduced into a cross-linked polymer matrix that exhibits intense photoluminescent emission located in the blue-green region of the visible spectrum within an extended UV excitation range, high optical transparency, and processability in thin layers. The obtained thin layers allow the harvesting of the UV component of solar radiation, a spectral range where current PV cells show a lower sensitivity, by converting UV photons in a spectral domain located in the visible area.