Search for dissertations about: "Long-wavelength infrared"

Showing result 6 - 9 of 9 swedish dissertations containing the words Long-wavelength infrared.

  2. 6. Growth and characterisation of InGaAs-based quantum dots-in-a-well infrared photodetectors

    Author : Linda Höglund; Per-Olof Holtz; Mattias Hammar; Stefan Johansson; Sanjay Krishna; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material physics with surface physics; Materialfysik med ytfysik;

    Abstract : This thesis presents results from the development of quantum dot (QD) based infrared photodetectors (IPs). The studies include epitaxial growth of QDs, investigations of the structural, optical and electronic properties of QD-based material as well as characterisation of the resulting components. READ MORE

  4. 7. Heterogeneous material integration for MEMS

    Author : Fredrik Forsberg; Frank Niklaus; Lina Sarro; KTH; []
    Keywords : ;

    Abstract : This thesis describes heterogeneous integration methods for the fabrication of microelectromechanical systems (MEMS). Most MEMS devices reuse the fabrication techniques that are found in the microelectronics integrated circuit industry. This limits the selection of materials and processes that are feasible for the realization of MEMS devices. READ MORE

  5. 8. Compound semiconductor materials and processing technologies for photonic devices and photonics integration

    Author : Carl Reuterskiöld Hedlund; Mattias Hammar; Mikael Östling; Sebastian Lourdudoss; Harri Lipsanen; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : The advancement of semiconductor optoelectronics relies extensively on materials and processing technologies of ever-increasing sophistication, such as nanometer-range lithography, epitaxial growth methods with monatomic layer control, and anisotropic etching procedures that allows for the precise sculpturing of device features even in the limit of extreme aspect ratios. However, upcoming application needs puts requirements on optimized designs or device performances, e. READ MORE

  6. 9. Free charge carrier properties in group III nitrides and graphene studied by THz-to-MIR ellipsometry and optical Hall effect

    Author : Nerijus Armakavicius; Vanya Darakchieva; Philipp Kühne; Stefan Zollner; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Development of silicon based electronics have revolutionized our every day life during the last five decades. Nowadays silicon based devices operate close to their theoretical limits that is becoming a bottleneck for further progress. READ MORE