Sökning: "intermediate layer"

Visar resultat 11 - 15 av 45 uppsatser innehållade orden intermediate layer.

  1. 11. Carbon Abundance in the Milky Way Galaxy

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Calum Kvernes Macpherson; [2021]
    Nyckelord :Carbon; Abundance; Milky Way; Chemical Evolution; Physics and Astronomy;

    Sammanfattning : Carbon is the fourth most abundant element after hydrogen, helium and oxygen. It is a product of stellar nucleosynthesis as well as it being an important bio signature for life; this makes the analysis of carbon very fundamental. LÄS MER

  3. 12. Estimating active layer thickness at the high Arctic study site Zackenberg from remotely sensed ground subsidence

    Kandidat-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Lotte Wendt; [2021]
    Nyckelord :active layer thickness; DInSAR; subsidence; permafrost; Zackenberg; CALM; Earth and Environmental Sciences;

    Sammanfattning : The active layer thickness (ALT) is an indicator of permafrost thaw, which potentially leads to the release of large amounts of greenhouse gases under global warming, and thus could further amplify climate change. The thaw depth of the active layer also governs seasonal surface deformation, caused by the volume change between ice to water, which poses risks for slope stability and infrastructure foundations. LÄS MER

  4. 13. Intermediate layer contacts for tandem solar cells based on ALD SnO2

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Georgia Iona; [2021]
    Nyckelord :Ald; SnO2; tandem cell; solar cell; IML; intermediate layer;

    Sammanfattning : In this project, samples with a metal/semiconductor/metal structure were fabricated and investigated with the potential application as the interconnecting layer of a tandem solar cell in mind. Degenerately doped p-Si and n-Si were used as bottom (metal like) contacts, as Si represents one of the most common materials for the bottom cell of tandem devices. LÄS MER

  5. 14. Study of HfN as seed layer for next generation of BAW RF filters : synthesis, characterization, and investigation of piezoelectric performance

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Eduard Llorens Balada; [2020]
    Nyckelord :HfN; AlScN; AlN; sputtering; XRD; SEM; seed layer; epitaxial growth;

    Sammanfattning : Micro-electro-mechanical systems (MEMS) have become an essential component of a wide range ofelectronic devices over the last decades such as accelerometers, microphones, gas sensors, and filters.During this new millennium, a new radio frequency (RF) technology has been developed to satisfy thetough demands that arose due to the implementation of 5G wireless communication: bulk acoustic wave(BAW) filters. LÄS MER

  7. 15. Spectroelectrochemical analysis of the Li-ion battery solid electrolyte interphase using simulated Raman spectra

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets fysik

    Författare :Edvin Andersson; [2020]
    Nyckelord :Lithium Ion Battery; Solid Electrolyte Interphase; Surface Enhanced Raman Spectroscopy; Density Functional Theory; LIB; SEI; SERS; DFT;

    Sammanfattning : Lithium Ion Batteries (LIBs) are important in today's society, powering cars and mobile devices. LIBs consist of a negative anode commonly made of graphite, and a positive cathode commonly made from transition metal oxides. Between these electrodes are separators and organic solvent based electrolyte. LÄS MER