Essays about: "Ohmska kontakter"

Found 3 essays containing the words Ohmska kontakter.

  1. 1. Niobium Ohmic Contacts for Cryogenic Indium Phosphide High-Electron-Mobility Transistors

    University essay from KTH/Tillämpad fysik

    Author : Linnéa Bendrot; [2022]
    Keywords : Ohmic contacts; high-electron-mobility transistor; InP; Nb films; cryogenic electronics; low-noise amplifier; quantum computing; transfer length method; superconductivity; contact barrier resistance; Ohmska kontakter; högelektronmobilitetstransistorer; indiumfosfid; niob; tunnfilm; kryogen elektronik; lågbrusförstärkare; kvantdatorer; Transfer Length-metod; supraledning; kontakt- barriärresistans;

    Abstract : Ohmic contacts are crucial components in semiconductor devices such as transistors and diodes, and lowering their contact resistance is an important factor in device performance enhancement. This is especially important for low-noise amplifiers (LNAs) where device noise temperature decreases both directly and indirectly with decreasing contact resistance. READ MORE

  3. 2. Processing and characterization of self-aligned Ni/Al and Co ohmic contacts to 4H-SiC

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Andrea Ferrario; [2018]
    Keywords : ;

    Abstract : New self-aligned silicide processes for the realization of Ni/Al and Co contacts to silicon carbide (4H-SiC) are presented and contacts are characterized using the transfer length method (TLM). Since cobalt silicide formation on 4H-SiC has not been investigated before, interface reaction between Co and 4H-SiC as well as the study on the annealing temperatures constitute an essential part of this work. READ MORE

  4. 3. STM-based characterization of single GaInP photovoltaic nanowires

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Johannes Brask; [2016]
    Keywords : STM top contact method GaInP nanowire array solar cell; Physics and Astronomy;

    Abstract : The I-V and photovoltaic properties of III-V semiconducting GaInP nanowires have been studied using a scanning tunneling microscope (STM) in evaluation for usage as a potential "sub cell" in a nanowire based tandem solar cell configuration. This evaluation required precise I-V characterization and photo response measurements of individual nanowires. READ MORE