Sökning: "Optoelectronics"

Visar resultat 21 - 25 av 49 avhandlingar innehållade ordet Optoelectronics.

1. 21. Processing 2D nanomaterials into inorganic-polymer composite films and fibers with well-defined properties

   Författare :Jian Chang; Jiayin Yuan; Ximin He; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 2D materials; advanced composite materials; crosslinking chemistry; high mechanical performance; solar heating; personalized thermoregulation; solar-driven water evaporation; materialkemi; Materials Chemistry;

   Sammanfattning : 2D materials such as graphene, graphene oxide (GO), reduced graphene oxide (rGO) and MXene, possess unique properties, e.g., high carrier mobilities, mechanical flexibility, good thermal conductivity, and high optical and UV adsorption. LÄS MER

3. 22. Flexible and Cellulose-based Organic Electronics

   Författare :Jesper Edberg; Magnus Berggren; Isak Engquist; Leif Nyholm; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic electronics; conductive polymers; nanocellulose; nanofibrillated cellulose; composite materials; paper electronics; flexible electronics;

   Sammanfattning : Organic electronics is the study of organic materials with electronic functionality and the applications of such materials. In the 1970s, the discovery that polymers can be made electrically conductive led to an explosion within this field which has continued to grow year by year. LÄS MER

4. 23. Characterization of Surfaces Relevant to Nanotechnology

   Författare :Emelie Hilner; Synkrotronljusfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nanotechnology; surface science; semiconductors; scanning tunneling microscopy; spectroscopic photoemission and low energy electron microscopy; low energy electron diffraction;

   Sammanfattning : In this thesis investigations of the structure and dynamics of semiconductor surfaces relevant for the synthesis of nanostructures are presented. The studies were performed using Scanning Tunneling Microscopy (STM), Low Energy Electron Diffraction (LEED), and Spectroscopic PhotoEmission and Low Energy Electron Microcopy (SPELEEM). LÄS MER

5. 24. Kinetic and thermodynamic modelling of ternary nanowire growth

   Författare :Egor Leshchenko; NanoLund: Centre for Nanoscience; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; III-V semiconductor materials; ternary nanowires; composition; crystal structure; modelling; Fysicumarkivet A:2021:Leshchenko;

   Sammanfattning : Among nanoscale structures of different shapes and dimensions nanowires are one of the most promising because of its truly unique properties different from their bulk counterparts. The energy quantization, perfect defect-free structure, and the possibility to grow them within the miscibility gap in combination with the benefits of bottom-up design and the possibility of integration on silicon substrates make nanowires ideal candidates for applications in optoelectronics, biotechnology and energy harvesting. LÄS MER

7. 25. Synthesis and Characterization of Acceptor Polymers for All-Polymer Solar Cells and Photodetectors

   Författare :Zhaojun Li; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; morphology; all polymer solar cells; all polymer photodetectors; conjugated polymers; charge recombination;

   Sammanfattning : The development of polymer semiconductors has become an important topic due to its advantages of low cost, easy fabrication, light weight, and capability to fabricate flexible large-area devices. For example, as the need for new clean energy sources is increasing, polymer solar cells (PSCs) are being developed rapidly and becoming a promising alternative to silicon solar cells. LÄS MER