Essays about: "passivation layer"

Showing result 1 - 5 of 14 essays containing the words passivation layer.

  1. 1. Influence of microstructure on surface characteristics in cold-deformed stainless steel tubes

    University essay from Lunds universitet/Materialteknik

    Author : Fredrik Ottenklev; [2019]
    Keywords : Cold deformation; surface roughness; strain; microstructure; austenitic stainless steel; grain rotation; Technology and Engineering;

    Abstract : Cold deformation of metals is known to induce roughness on their free surface. In some of the processing equipment of Tetra Pak processing systems, tubes of austenitic stainless steel 316L are used. During the production of this processing equipment, such tubes are occasionally cold-deformed. READ MORE

  2. 2. Silicon surface passivation via ultra-thin SiO2, TiO2, and Al2O3 layers

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

    Author : Anton Ek; [2019]
    Keywords : surface passivation; ALD; silicon; solar cell; SiO2; Al2O3; TiO2; stacks; characterization; optimization; RSM; temperature;

    Abstract : Energy traps at the silicon surface originating from discontinuities in the lattice is detrimental to the performance of solar cells. Acting as recombination centers, they offer a location where the charge carriers may easily return to their original energy band after excitation. READ MORE

  3. 3. Processing of Sub-micrometer Features for Rear Contact Passivation Layer of Ultrathin Film Solar Cells Using Optical Lithography

    University essay from ;

    Author : Evelina Roxner; Ronja Olsmats Baumeister; [2019]
    Keywords : nanofabrication; optical lithography; photo lithography; line contacts; microfabrication; rear contact passivation; passivation layer; sub-micrometer features; thin film; ultra-thin film; solar cells; CIGS; aluminiumoxide;

    Abstract : Thin film copper, indium, gallium, selenide (CIGS) solar cells are promising in the field of photovoltaic technology. To reduce material and fabrication cost, as well as increasing electrical properties of the cell, research is ongoing towards ultra-thin film solar cells (absorption layer thickness less than 500 nm). READ MORE

  4. 4. Advanced rear contact design for CIGS solar cells

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

    Author : Jorge Alexandre De Abreu Mafalda; [2019]
    Keywords : CIGS; HfO2; surface passivation; alkali treatment; point contact openings; SCAPS;

    Abstract : The current trend concerning the thinning of solar cell devices is mainly motivated by economic aspects, such as the cost of the used rare-earth elements, and by the requirements of emergent technologies. The introduction of ultra-thin absorber layers results in a reduction of used materials and thus contributes to a more cost-effective and time-efficient production process. READ MORE

  5. 5. Material characterization of multi-layered Zn-alloy coatings on fasteners : Effects on corrosion resistance, electrical conductivity and friction

    University essay from KTH/Materialvetenskap

    Author : Ante Vallien; [2018]
    Keywords : ZnNi; zinc alloy; multi-layered coating; electrodeposited coating; fasteners; corrosion resistance;

    Abstract : Electroplated zinc-alloy coatings have been used on fasteners in the automotive industry for many years. The coating often consists of three layers: a zinc-alloy layer, a passivation layer and a sealer or top-coat. READ MORE