NiCu-based superconducting devices: fabrication and characterization

Silicon-based Photonic Devices: Design, Fabrication and Characterization

The field of Information and Communication Technologies is witnessing a development speed unprecedented in history. Moore’s law proves that the processor speed and memory size are roughly doubling each 18 months, which is expected to continue in the next decade. If photonics is going to play a substantial role in the ICT market, it will have to follow the same dynamics. There are mainly two gro...

Tunable and Broadband Nanostructured Photonic Devices: Fabrication and Characterization

The main topic of this thesis is the fabrication and characterization of structures smaller than the wavelength of light, for operation in the visible or near infrared spectral range. In the first part of this thesis, the fabrication of periodic structures in one and two dimensions with an interference photolithography technique is described in detail. The structure periodicities that have been...

Physical simulation, fabrication and characterization of Wide bandgap semiconductor devices

Fabrication and Characterization of Organic Light Emitting Devices

By using Indium tin oxide (ITO) as anode material and NPB and Alq3 as hole transport layer(HTL) and electron transport layer(ETL) respectively, a Organic Light Emitting Device (OLED) with emitted wavelength of (525 ± 20) nm is produced. Aluminium (Al) is used as a cathode. The calculated emission energy is 2.37 ± 0.12 eV compared to theoretically 2.8 eV from the band gap in Alq3. This shifting ...

Characterization of Vacuum Chamber Samples for Superconducting Insertion Devices

One of the key components of a superconducting insertion device is the ultra-high vacuum (UHV) chamber. In order to reach the UHV specifications of the ANKA storage ring, it is very important to control the surface chemical composition and find proper cleaning procedures. To keep the geometric and resistive wall losses caused by the electron beam of the accelerator as low as possible, it is ess...