Jan Misiewicz

TL;DR: In this article, it was shown that polarization effects in the AlGaN/GaN heterostructures on the c-plane lead to a strong built-in electric field in the alGaN layer.

TL;DR: In this paper, the growth rate of GaAs/AlGaAs superlattices with layer composition imitating the active region of quantum cascade lasers emitting in the mid infrared spectral range were investigated.

TL;DR: In this paper, a silicon nanocrystals (Si-nc) embedded in a silicon-rich silicon oxide (SRSO) matrix doped with Er 3+ ions for different erbium and silicon concentrations have been deposited by electron-cyclotron resonance plasmaenhanced chemical-vapor-deposition (ECR-PECVD) technique.

TL;DR: In this paper, the authors investigated the optical transitions in strained In 0045 Ga 0955 As/GaAs multiple quantum wells, where the structures were grown by molecular beam epitaxy for different GaAs barrier thickness (1, 3, 5 and 9 monolayers) and for different numbers of wells (3 and 4).

TL;DR: In this paper, the QW-QDash energy transfer has been probed by temperature dependent photoluminescence with changed excitation wavelength, where an efficient tunneling has been evidenced directly in the photoreflectance spectra up to 130 K.