Essays about: "bandgap"

Showing result 21 - 25 of 62 essays containing the word bandgap.

  1. 21. Polymer Assisted Transfer of Graphene onto Semiconductor Substrates

    University essay from Lunds universitet/Förbränningsfysik; Lunds universitet/Synkrotronljusfysik

    Author : Jonathan Frisby; [2020]
    Keywords : Physics and Astronomy;

    Abstract : Since first being isolated in 2004, Graphene has been researched heavily because of its unique properties. Recently, interest has grown in graphene/semiconductor heterostructures. In this work, the transfer of graphene through the use of cellulose acetate butyrate (CAB) polymer is studied. READ MORE

  3. 22. Sputtering of High Quality Layered MoS2 films

    University essay from Uppsala universitet/Fasta tillståndets elektronik

    Author : Sari Abid Al Shaybany; [2020]
    Keywords : MoS2; molybdenum; molybdenum disulfide; sputtering; magnetron sputtering; high quality; sulfur; H2S; argon; pressure; temperature; high temperature; monolayer; few layers; large scale;

    Abstract : We have deposited bulk, monolayer and few-layers as well as large-scale 2D layered MoS2 thin films by pulsed DC magnetron sputtering from an MoS2 target. MoS2 has gained great attention lately, together with other layered Transition Metal Dichalcogenides (TMDCs), for its unique optical and electrical properties with thickness-dependent bandgap. READ MORE

  4. 23. Properties of epitaxial lateral overgrowth of GaAsP and GaAs grown by hydride vapor phase epitaxy

    University essay from KTH/Tillämpad fysik

    Author : Lakshman Srinivasan; [2020]
    Keywords : GaAsP; ELOG; HVPE; Photoluminescence; Raman;

    Abstract : Direct heteroepitaxy of III-Vs on silicon (Si) has always been a challenge and there are various strategies to integrate these materials. This thesis deals with one such strategy known as Epitaxial lateral overgrowth (ELOG) which is extensively supported by experiments. READ MORE

  5. 24. Properties of III-V/Si heterojunction fabricated by HVPE

    University essay from KTH/Tillämpad fysik

    Author : Prakhar Bhargava; [2020]
    Keywords : ;

    Abstract : Silicon is a promising material and is used for a wide range of applications in the electronics industry because of the high quality surface passivation given by the native oxide layer SiO2e. However, Si is not an ideal candidate for optoelectronic applications due to its indirect bandgap of 1. READ MORE

  6. 25. Artificial photosynthesis - 4-Aminobenzoic acids effect on charge transfer in a photo catalytic system

    University essay from Uppsala universitet/Materialteori

    Author : Simon Moberg; [2019]
    Keywords : artificial photosynthesis; aminobenzoic acid; charge transfer; plasmon; induced; plasmon induced; nanostructure; nanostructures; solar energy; nano particles; nano particle; artificiell fotosyntes; aminobensoesyra; laddningsöverföring; plasmon; inducerad; plasmoninducerad; nanostruktur; nanostrukturer; solenergi; nanopartiklar; nanopartikel;

    Abstract : Artificial photosynthesis is used to harvest solar energy and store it in the form of chemical bonds. The system of interest in this study does this by splitting water into hydrogen and oxygen gas through a plasmon assisted process, collective oscillations from free electron gas. READ MORE