Synthesis of conducting single-phase CuFeO2 thin films by spray pyrolysis technique. (1st March 2020)

• Record Type: Journal Article
• Authors: Mohamed, Hagar; Chikoidze, Ekaterine; Ratep, A.; Elsoud, A.M.Abo; Boshta, M.; Osman, M.B.S.
• Is Part Of: Materials science in semiconductor processing. Volume 107(2020)
• Publication Date: 2020-03-01
• Subjects: P-type oxides -- Copper-iron oxide -- Spray pyrolysis deposition technique -- Structural -- Surface morphology -- Opto-electrical studies; Semiconductors -- Periodicals; Integrated circuits -- Materials -- Periodicals; Semiconducteurs -- Périodiques; Circuits intégrés -- Matériaux -- Périodiques; Electronic journals; 621.38152
• DOI: 10.1016/j.mssp.2019.104831
• Languages: English
• ISSNs: 1369-8001

Abstract

Abstract: P-type conducting CuFeO2 thin films were synthesized on fused silica substrates by a chemical deposition spray pyrolysis technique followed by a heat treatment in a nitrogen (N2 ) atmosphere for 120 min at annealing temperature 850 °C. The effects of spray solution quantity on the structural, morphological, optical and electrical were studied. The post-annealed CuFeO2 films are single-phase, polycrystalline with rhombohedral structure and (012) preferred orientation. The optical transmittances varied from 70 to 30% in the VIS-IR spectrum and the direct band gap value was decreased from 1.88 eV to 1.48 eV with thickness increase. The electrical conductivity of CuFeO2 thin films increased from 9 Х 10 -5 S/cm to 1.5 Х 10 -1 S/cm and the carrier concentration increased from 5.5 Х 10 14 cm -3 to 7.4 Х 10 18 cm -3 while the film's crystalline quality improved.