Multilayered Au/Ni/Al thin film metallization deposited by DC sputtering on n+Si has been investigated by AES. It was found that Ni aluminide layers form during heat treatments at temperatures above 623 K and Ni diffuses significantly through the Au layer and segregates at the surface. Consequently, the Ni oxidation takes place. Electrical measurements of the Au/Ni/Al metalized diode forward characteristics showed minor influence of the heat treatment on the series resistance. Degradations were observed in the reverse characteristics if the annealing was performed above 723 K.
COBISS.SI-ID: 23005735
Investigation of dry-etched and cutting edge properties in edge-on silicon microstrip detector has been performed. Results presented in the paper show that this approach results in effective reduction of cutting edge thickness down to 50 µm. By described optimization of detector dead layer thickness, detection efficiency has been improved up to 15%.
COBISS.SI-ID: 7820884
Design, fabrication and characterization of low-cost, energy efficient flow-generator for hydrogen production in microreactors is presented. Design guidelines of three approaches, based on micropump and pressure sensor are discussed in detail, followed by experimental setup description and system characterization. Due to adequate system energy efficiency and system stability, approach based on differential pressure sensing, supported by PID control regulation was found as the most appropriate, what was further confirmed with successfully running microreactor applications.
COBISS.SI-ID: 8169044
Optical absorption coefficient of intrinsic hydrogenated amorphous silicon (i-a-Si:H) at high electric field is studied. A theoretical model for an absorption coefficient that predicts its increase at higher electric field has been developed. Measurements of transmission were performed on a transparent conductive oxide (TCO)/i-a-Si:H/TCO/glass test structure and confirmed the effect of increased absorption at increasing field.
COBISS.SI-ID: 7585876
Detection of nanoparticles in the air is difficult because the particles are so small that they can not be detected by conventional detection methods. The article presents an innovative approach of detection of airborne nanoparticles. It is based on condensation of nanoparticles forming micron sized water droplets which are fed and detected by a capacitive type sensor. The concept is confirmed theoretically and through numerical modelling as well as by experiments.
COBISS.SI-ID: 23475495