Bias and illumination-dependent room temperature negative differential conductance in Ni-doped ZnO/p-Si Schottky photodiodes for quantum optics applications

Synthesis of 2D yttrium zinc oxide nanosheets via simple chemical route toward high performance Schottky diode based on large charge carriers density and photoresponsivity

“…Zinc oxide nanoparticles (ZnO NPs) possess favorable energy band structure, high bulk electron mobility of 200 cm 2 V −1 s −1 , and excellent structuralmorphological features [5,6]. However, nanoparticles agglomeration, large exciton binding energy of 60 meV, and charge carriers recombination impede its electrical conductivity and limit the optoelectronic performance [6,7]. Several studies have reported that, integration of ZnO with different impurity atoms will modify the band gap by generating additional energy levels, enhancing light absorption, and reducing photocarriers recombination [7,8].…”

“…However, nanoparticles agglomeration, large exciton binding energy of 60 meV, and charge carriers recombination impede its electrical conductivity and limit the optoelectronic performance [6,7]. Several studies have reported that, integration of ZnO with different impurity atoms will modify the band gap by generating additional energy levels, enhancing light absorption, and reducing photocarriers recombination [7,8]. Further, combining ZnO with different additives facilitates exciton separation and increases free charge carriers mobility [8].…”

Strong Magneto-Optical Kerr Effects in Ni-Doped ZnO Nanolaminate Structures Obtained by Atomic Layer Deposition

“…The chemically modified Zn(Ni)O composite nanostructures show an altered bandgap electronic structure with a significant effect on the physical properties. The most recent studies are focused on the following: (i) the main optical properties (absorbance, photoluminescence) and constants, photoconductivity and low optical losses, linear and non-linear (third order) optical susceptibilities with opto-electronic prospects in quantum technologies [10], photodetection [11] and solar cells with high detector responsivity; (ii) the development of enhanced catalyst function [12,13] and surface (gas species) adsorption in numerous green chemistry applications, especially for photo-chemical [14] and gas sensing applications [15]; and (iii) notable thermoelectric [16] and acoustoelectronic [15] (with larger insertion loss and phase shift) characteristics.…”