SIMS and Numerical Analysis of Asymmetrical Out-Diffusion of Hydrogen and Carbon in CdZnO:Eu Multilayer.

This study employs secondary ion mass spectrometry (SIMS) to investigate the diffusion behavior of hydrogen and carbon in a CdZnO:Eu multilayer at different annealing temperatures (500-900 °C). The SIMS results reveal a significant out-diffusion of these elements toward the surface and diffusion to the interface region. The diffusion flow rates are asymmetric and favor the interface direction.

Polar and Non-Polar ZnMgO:Sb Grown by MBE.

The article presents a systematic study of Sb-doped ZnMgO layers, with various concentrations of Mg, that were successfully grown by plasma-assisted MBE on polar - and -oriented and non-polar -oriented sapphire substrates. X-ray diffraction confirmed the polar -orientation of alloys grown on -and -oriented sapphire and non-polar structures grown on -oriented substrates. A uniform depth distribution of the Sb dopant at level of 2 × 10 cm was determined by SIMS measurements.

Structural Properties of Thin ZnO Films Deposited by ALD under O-Rich and Zn-Rich Growth Conditions and Their Relationship with Electrical Parameters.

The structural, optical, and electrical properties of ZnO are intimately intertwined. In the present work, the structural and transport properties of 100 nm thick polycrystalline ZnO films obtained by atomic layer deposition (ALD) at a growth temperature (T) of 100-300 °C were investigated. The electrical properties of the films showed a dependence on the substrate (-AlO or Si (100)) and a high sensitivity to T, related to the deviation of the film stoichiometry as demonstrated by the RT-Hall effect.

The Band-Gap Studies of Short-Period CdO/MgO Superlattices.

Trends in the behavior of band gaps in short-period superlattices (SLs) composed of CdO and MgO layers were analyzed experimentally and theoretically for several thicknesses of CdO sublayers. The optical properties of the SLs were investigated by means of transmittance measurements at room temperature in the wavelength range 200-700 nm. The direct band gap of {CdO/MgO} SLs were tuned from 2.