Sökning: "Thermoelectric"

Visar resultat 16 - 20 av 92 avhandlingar innehållade ordet Thermoelectric.

  1. 16. Thermoelectric- and hot-electron effects in graphene devices

    Författare :Grigory Skoblin; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Parylene; bolometer; CVD; encapsulation; graphene; thermoelectric effects;

    Sammanfattning : A technology of encapsulation of graphene in Parylene was introducedas an alternative to encapsulating graphene in hBN. Edge contacts to theencapsulated graphene in this case showed resistivity down to 14 Ohm um,which is the lowest reported value so far. LÄS MER

  3. 17. Thermoelectric Phenomena in Quantum Dots

    Författare :Sofia Fahlvik Svensson; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2014:Fahlvik Svensson; Coulomb blockade; nanowire; thermoelectricity; quantum dot;

    Sammanfattning : Thermoelectricity is being intensively researched as it is believed to hold great promise for applications in power generation and cooling. One way to quantify the electrical power output of a thermoelectric material is the power factor, a function of electrical conductivity and thermopower. LÄS MER

  4. 18. Structure-property investigation of ZnSb, ZnAs, and SiB3 : - binary semiconductors with electron poor framework structures

    Författare :Daniel Eklöf; Ulrich Häussermann; Oliver Orckler; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Thermoelectric; Waste heat harvesting; Semiconductor; X-ray powder diffraction; SEM; Electron poor framework; EPFS; Green house effect; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : In today’s society, where energy conservation and green energy are buzz words, new scientific discoveries in green energy harvesting is key. This work focuses on materials capable of recycling low value thermal energy. LÄS MER

  5. 19. Nanostructured Bulk Thermoelectrics : Scalable Fabrication Routes, Processing and Evaluation

    Författare :Mohsen Yakhshi Tafti; Muhammet S. Toprak; Gao Min; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Thermoelectric; Iron antimonide FeSb2 Skutterudite; Copper Selenide Cu2Se ; Spark Plasma Sintering SPS ; nanomaterial; Teknisk materialvetenskap; Materials Science and Engineering; Energy Technology; Energiteknik;

    Sammanfattning : Current fossil fuel based energy sources have a huge shortcoming when one discusses their efficiency. The conversion efficiency of fossil fuel-based technologies is less than 40% in best cases. LÄS MER

  7. 20. Hot-carrier extraction in nanowires

    Författare :Jonatan Fast; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanowire; Hot carrier; photovoltaic; Thermoelectric; Fysicumarkivet A:2023:Fast;

    Sammanfattning : A hot-carrier solar cell aims to generate power from energetic, photoexcited, charge carriers, so called hot carriers, in order to reach higher conversion efficiencies than current solar cell technology.Creating a hot-carrier solar cell has proven challenging for two main reasons: hot carriers lose their energy very quickly, and they need to be extracted over distances of a few hundrednanometers via energy selective filters. LÄS MER