Characteristics of the Mg-Doped Cr-Deficient CuCr<SUB>0.95</SUB>Mg<SUB>0.02</SUB>O<SUB>2</SUB> Thin Films Prepared by Using Pulsed Laser Deposition

Abstract

2 at% Mg doped thin films of delafossite CuCrO 2 and Cr-deficient CuCr 0 97 O 2 were prepared by pulsed laser deposition. The films were grown on c-sapphire single crystal substrates at a range of substrate temperatures, and the effects of the processing parameters on thin film properties were examined. The crystallinity improved with increasing substrate temperature and Mg-doping. The substitution of Mg in the CuCrO 2 and Cr-deficient CuCr 0 97 O 2 thin films increased the electrical conductivity significantly with a slight decrease in optical transmittance. By introducing Mg-doping to Cr-deficient CuCr 0 97 O 2 thin films, a CuCr 0 95 Mg 0 02 O 2 thin film with an electrical conductivity of 29.63 S/cm and a mean optical transmittance of 60% was fabricated.

A review on the p-type transparent Cu–Cr–O delafossite materials

“…However, this is not adequate for large scale deposition, due to a poor long-range uniformity or control of the process [195]. A second category of deposition methods refers to physical vapour deposition (PVD) mainly the sputtering [47,117,[196][197][198][199][200][201][202][203] and pulsed laser deposition [47,145,188,[204][205][206][207][208]. Vacuum-based techniques are preferred as this addresses the issue of the instability of Cu ?…”

Synthesis of nanocrystalline Cu deficient CuCrO2 – a high figure of merit p-type transparent semiconductor

“…The highest conductivities after this value are for Mg doped samples on sapphire substrates synthesized by pulsed laser deposition (PLD) with conductivities in the 30-70 Scm −1 range. [16][17][18] In contrast (excluding the report by Nagarajan et al) most papers using amorphous substrates report conductivities in the 1-10 Scm −1 range. 19,20 The transparency of these films is degraded by the doping; reduced to 40% for a 250 nm thick film.…”

Delafossite Nanoparticle as New Functional Materials: Advances in Energy, Nanomedicine and Environmental Applications

“…It has been synthesized using; 1) conventional thermal methods, 2) other energy sources such as microwaves, laser, or plasma, 3) cation exchanges, or 4) solid-state reactions. In details, they can prepared using hydrothermal [44][45][46][47][48][49][50][51][52][53][54][55], solid-state reactions [56][57][58][59][60], cation exchange reactions [61][62][63], sol-gel method [64][65], pulsed laser deposition (PLD) [66][67][68], laser ablation [69], sputtering [70][71][72][73], direct electrodeposition [74], cation exchange [75], travelling-solvent floating zone method (TSFZ) [76], Radiofrequency (RF) magnetron sputtering [77], direct microwave heating [78], dip-coating technique [79], solution combustion synthesis method [80], flux method [81], and least but not last electrospinning [82].…”