Effects of Mg substitution on the structural, optical, and electrical properties of CuAlO2 thin films

Electronic and magnetic properties of second main-group and second sub-group metals substitution for Al in delafossite CuAlO2

“…The calculated electronic structures present new characters, including the appearance of electron acceptors (shallow acceptors) above E f , the decreased bandgaps and the enhanced covalent nature of Cu O bonds, which are all good for p-type conductivity. This conclusion is in good agreement with the experimental results [22,23]. Moreover, the ferromagnetism with high magnetic moments have been found, but their ferromagnetic states are unstable.…”

“…Experimentally, the resistivity of the deposited Cu Al O films was increased with the Al content due to that the incorporated Al 3+ ions substituting Cu 2+ ions induces the decrease of hole concentration [21]. Hence, the substituting Al 3+ in the CuAlO 2 films with Mg 2+ [22] and the room-temperature RFsputtered CuAlO x : Ca films [23] have been studied, which favor the acceptor doping to enhance p-type conductivity. In order to understand the p-type conduction mechanism of the bivalent cations substitution for Al, the electronic properties of Be, Mg and Ca substitution for Al were investigated, which showed the enhancement of covalence in the Cu O bonds [19].…”

Fabrication of CuAl1−xMxO2 (M = Fe, Cr)/Ni film delafossite compounds using spin coating and their microstructure and dielectric constant

“…According to Table 5 it is obtain that increase of Cr amount induce the decrease of its dielectric constant. This result of the form of delafossite film is supported by the work of Jiang et al (2011). They reported that the conductivity of CuAlO 2 compound is increase by introducing Cr 3+ .…”

P-type Ca doped SrCu2O2 thin film: Synthesis, optical property and photovoltaic application

“…have attracted widespread interests, and different techniques have been used for the preparation of this kind of TCO thin films [14][15][16][17][18][19][20][21]. The ternary oxide SrCu 2 O 2 has a direct band gap of 3.3 eV in combination with non-toxicity and relatively low deposition temperature [22].…”