Synthesis and characterization of Cu doped chromium oxide (Cr 2 O 3 ) thin films
Source abstract
Abstract
Abstract Cu-doped Cr 2 O 3 thin films were deposited onto glass substrate by the sol–gel dip-coating (SGDC) process using dopant values of 0, 3, 6, 9 and 12%. The Chromium (III) Nitrate Nonahydrate [Cr(NO 3 ) 3 ·9H 2 O] was used as a Cr source, whilst for the dopant, the corresponding nitrate (Cu(NO 3 ) 2 ) was used. The crystal structure, as well as the optical and electrical properties were examined. XRD data showed that the films with a high degree of crystallinity were rhombohedral Cr 2 O 3 phase. The crystallite size reduces with increase in Cu doping proportion. The AFM results indicate a decrease in the surface roughness of the doped Cr 2 O 3 : Cu thin films. The UV-Vis spectra of the Cu doped-Cr 2 O 3 films showed high transparency in the visible region. The optical band gap of Cr 2 O 3 thin films decreases with increasing in Cu doping rate. The Nyquist plot shows that the equivalent circuit of Cu doped-Cr 2 O 3 films is a parallel circuit R p C p . As the concentration of Cu increases, Resistance R P regresses while capacitance C p increases.
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Research context
OpenAlex topics: Pigment Synthesis and Properties · Transition Metal Oxide Nanomaterials · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratoire de Génie Physique, Université Ibn-Khaldoun , Tiaret (14000), Algeria
Laboratoire Synthèse et Catalyse, Université Ibn-Khaldoun , Tiaret (14000), Algeria
Département de Chimie, Université Ibn-Khaldoun , Tiaret (14000), Algeria
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