Theoretical and experimental approaches for the determination of functional properties of MgSnN2 thin films

Autor:	Fahad Alnjiman, Agathe Virfeu, David Pilloud, Sébastien Diliberto, Emile Haye, Alaa E. Giba, Sylvie Migot, Jaafar Ghanbaja, Pascal Boulet, Hamad Albrithen, Jean-François Pierson
Rok vydání:	2022
Předmět:	Burstein-Moss effect Renewable Energy Sustainability and the Environment ab initio calculations MgSnN Optical and electrical properties Reactive co-sputtering Surfaces Coatings and Films Electronic Optical and Magnetic Materials
Zdroj:	Solar Energy Materials and Solar Cells. 244:111797
ISSN:	0927-0248
Popis:	MgSnN2 thin films were deposited by reactive magnetron co-sputtering on fused silica and silicon substrates. The properties of the films were determined as a function of the deposition temperature. Although the films exhibited a strong preferred orientation along the [002] direction, cumulative X-ray diffractograms at various χ angles evidenced that the deposited films crystallized in a wurtzite-like structure. Regardless of the substrate temperature during deposition, MgSnN2 films had a columnar microstructure. Mössbauer spectrometry and X-ray photoemission spectroscopy were used to extract the chemical environment of magnesium and tin atoms and to identify their oxidation states. Electrical properties were deduced from Hall effect measurements. An increase of the electron mobility was noticed at high deposition temperature. The optical band gap of MgSnN2 films increased from approx. 2.28 to 2.43 eV in the 300–500 °C range. The experimental optical properties of MgSnN2 films were compared to those obtained by ab initio calculations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa2410b8889a93d45fec9df7bd91b152 https://doi.org/10.1016/j.solmat.2022.111797 Zobrazit plný text záznamu Full Text from ScienceDirect