Magnetic, electrical and optical properties of p-type Fe-doped CuCrO2 semiconductor thin films

Characterization of transparent superconductivity Fe-doped CuCrO 2 delafossite oxide

The structure, Raman spectroscopy, magnetization, and dielectric properties of delafossite-type oxide CuCr1−xAlxO2 have been characterized. It was found that Al substitution generates an anisotropic effect on the structure, besides magnetic dilution. The temperature dependence of all samples exhibits paramagnetic behavior at high temperature. Above x=0.2 the ferromagnetic transition at 120 K disappears. It is argued that Al substitution destabilizes the antiferromagnetic order of Cr3+ ions and modulates the spin configuration, leading to a weak ferromagnetism. The coupling between the magnetic order and ferroelectric order is also characterized.

Al-doping effect on the structural and physical properties of delafossite-type oxide CuCrO2

ZnSnN2 (ZTN) has been proposed as a new earth abundant absorber material for photovoltaic (PV) applications. While carrier concentration has been reduced to values suitable for device implementation, other properties such as ionization potential, electron affinity, and work function are not known. Here, we experimentally determine the value of ionization potential (5.6 eV), electron affinity (4.1 eV), and work function (4.4 eV) for ZTN thin film samples with Zn cation composition Zn/(Zn+Sn) = 0.56 and carrier concentration $n$ = 2 × 1019 cm−3 . Using both experimental and theoretical results, we build a model to simulate the device performance of a ZTN/Mg:CuCrO2 solar cell, showing a potential efficiency of 23% in the limit of no defects present. We also investigate the role of band tails and recombination centers on the cell performance. In particular, device simulations show that band tails are highly detrimental to the cell efficiency, and recombination centers are a major limitation if present in concentration comparable to the net carrier density. The effect of the position of the band edges of the p- type junction partner was assessed too. Through this study, we determine the major bottlenecks for the development of ZTN-based solar cell and identify avenues to mitigate them.

Band Edge Positions and Their Impact on the Simulated Device Performance of ZnSnN2-Based Solar Cells

Review in optoelectronic properties of p-type CuCrO2 transparent conductive films

Enhanced magnetic and ferroelectric properties of multiferroic CuCrO2 by Ni-doping

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Enhanced magnetic and ferroelectric properties of multiferroic CuCrO2 by Ni-doping