@misc{10498/32622,
year = {2024},
url = {http://hdl.handle.net/10498/32622},
abstract = {Copper-nitride (Cu (Formula presented.) N) semiconductor material is attracting much attention as a potential, next-generation thin-film solar light absorber in solar cells. In this communication, polycrystalline covalent Cu (Formula presented.) N thin films were prepared using reactive-RF-magnetron-sputtering deposition, at room temperature, onto glass and silicon substrates. The very-broadband optical properties of the Cu (Formula presented.) N thin film layers were studied by UV-MIR (0.2–40 (Formula presented.) m) ellipsometry and optical transmission, to be able to achieve the goal of a low-cost absorber material to replace the conventional silicon. The reactive-RF-sputtered Cu (Formula presented.) N films were also investigated by focused ion beam scanning electron microscopy and both FTIR and Raman spectroscopies. The less dense layer was found to have a value of the static refractive index of 2.304, and the denser film had a value of 2.496. The iso-absorption gap, (Formula presented.), varied between approximately 1.3 and 1.8 eV and could be considered suitable as a solar light absorber.},
publisher = {MDPI},
keywords = {optical properties},
keywords = {thin films},
keywords = {electron microscopy},
keywords = {spectroscopic ellipsometry},
keywords = {solar energy},
title = {Mid-Infrared (MIR) Complex Refractive Index Spectra of Polycrystalline Copper-Nitride Films by IR-VASE Ellipsometry and Their FIB-SEM Porosity},
doi = {10.3390/COATINGS14010005},
author = {Márquez Navarro, Emilio José and Blanco Ollero, Eduardo and Manuel Delgado, José Manuel and Ballester, M. and García-Gurrea, M. and Rodríguez-Tapiador, M.I. and Fernández, S.M. and Willomitzer, Florian and Katsaggelos, Aggelos K.},
}