Essays about: "high temperature al2o3"

Showing result 11 - 15 of 19 essays containing the words high temperature al2o3.

  1. 11. Plasmonic Effect of Metal Nanoparticles Deposited on Wide-Band Gap Metal Oxide Nanowire Substrate

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Mojtaba Gilzad Kohan; [2017]
    Keywords : plasmonic particles; nano wires; wide band gap semiconductors;

    Abstract : The application of nanowires (NWs) in solar cells (SCs) is of great interest due to their new promising aspects established in nanoelectronics. Semiconductors associated with plasmonic metal nanoparticles (NPs) such as Silver (Ag), Gold (Au) and Copper (Cu), show enhanced performance in solid state light absorbing SCs owing to plasmonic characteristic of noble metal NPs. READ MORE

  3. 12. Application of sorption-enhanced catalysis to ethanol reforming

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Jacky Ho; [2016]
    Keywords : Catalysis; adsorption; Li4SiO4; CaO; Ethanol reforming;

    Abstract : Lithium orthosilicate (Li4SiO4) is known to be a high temperature CO2 capture material. This work was focused on comparing Li4SiO4 to the extensively studied CaO as an adsorbent in sorption enhanced catalysis. Thermogravimetric analysis was used to study the effects of sorption temperature and compaction on Li4SiO4 using 15vol% CO2 in N2. READ MORE

  4. 13. Preparation and evaluation of sulfided NiMo/γ-Al2O3 hydrotreating catalysts

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : ALI KAMYAB; [2016]
    Keywords : NiMo catalyst; hydrotreating; phosphorous; catalysis; preparation;

    Abstract :   Four nickel-molybdenum catalysts were synthesized on gamma alumina with higher surface area and on NiMo catalyst was prepared using gamma alumina with lower surface area. Catalysts with higher-surface-area support were prepared by co-impregnation, sequential impregnation and adding phosphorous. Theses catalysts were calcined at 500  ͦC. READ MORE

  5. 14. Current voltage characterization of high-k oxide on InGaAs substrate

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

    Author : Muhammad Ismail; [2014]
    Keywords : Physics and Astronomy;

    Abstract : Abstract Metal oxide semiconductor (MOS) capacitor was fabricated on the InGaAs substrate with Al2O3/HfO2 gate oxide. InGaAs is one of the promising candidates for advanced applications which require the lower power supply and high frequency. READ MORE

  6. 15. Characterization of Al2O3 as CIGS surface passivation layer in high-efficiency CIGS solar cells

    University essay from Uppsala universitet/Fasta tillståndets elektronik

    Author : Jonathan Joel; [2014]
    Keywords : CIGS; Surface Passivation; Thin Film Solar Cells; Al2O3; Capacitance-Voltage; Photoluminescence;

    Abstract : In this thesis, a novel method of reducing the rear surface recombination in copper indium gallium (di) selenide (CIGS) thin film solar cells, using atomic layer deposited (ALD) Al2O3, has been evaluated via qualitative opto-electrical characterization. The idea stems from the silicon (Si) industry, where rear surface passivation layers are used to boost the open-circuit voltage and, hence, the cell efficiency. READ MORE