Sökning: "InP 110 :As"

Visar resultat 11 - 15 av 16 avhandlingar innehållade orden InP 110 :As.

  1. 11. Transmission Electron Microscopy of III-V Nanowires and Nanotrees

    Författare :Lisa Karlsson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Technological sciences; Naturvetenskap; Natural science; nanowires; TEM; III-V; Teknik;

    Sammanfattning : In this work, the morphology and crystal structure of epitaxial semiconductor nanowire structures grown by metal-organic vapour phase epitaxy (MOVPE) are studied by electron microscopy methods. In particular, the three-dimensional structure of nanowires and nanotrees has been characterised by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and multi-slice (MS) simulations. LÄS MER

  3. 12. Heterostructure Field-Effect Transistors for Millimeter Wave Applications

    Författare :Christer Karlsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis deals with the development of low-noise heterostructure field-effect transistors (HFETs) on III-V materials. The emphasis is on devices for high gain and low noise applications. Fabrication processes have been developed and transistors have been fabricated and characterized. LÄS MER

  4. 13. Efficient 1.3 mm GaInNAs Quantum Well Lasers for Uncooled, High Speed Operation

    Författare :Yongqiang Wei; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; semiconductor laser; uncooled; temperature dependence; modulation; quantum well; molecular beam epitaxy; high speed; GaInNAs;

    Sammanfattning : The rapid expansion of tele and data transmission systems requires an ever increasing capacity in modern optical fibre communication networks. With the implementation of short distance, high density networks, such as access networks, there is a need for cost-effective optical transmitters compatible with single mode fibres. LÄS MER

  5. 14. Silicon Integrated HBV Frequency Multipliers for THz Applications

    Författare :Aleksandra Malko; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; frequency multipliers; Heterostrucutre Barrier Varactors HBVs ; THz sources; wafer bonding.; integrated circuits; heterogeneous integration; Compund semiconductors; epitaxial transfer; MICs;

    Sammanfattning : This thesis deals with integrated varactor diode circuits for terahertz (THz) applications. In particular hybrid, monolithic microwave integrated circuits (MMICs), and heterogeneous integration are explored for frequency multiplier applications. LÄS MER

  7. 15. High performance materials and processing technology for uncooled 1.3 μm laser diodes

    Författare :Roberta Campi; Gunnar Landgren; Abdallah Ougazzaden; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MOCVD; InGaAsP; AlGaInAsP; AlGaInAs; In-situ etching; TBCI; Semiconductor physics; Halvledarfysik;

    Sammanfattning : This thesis investigates different material systems and processing technology for high temperature compatible laser diodes used in volume applications within the 1.3-μm telecom wavelength window. LÄS MER