Sökning: "charge carrier relaxation"

Visar resultat 6 - 10 av 14 avhandlingar innehållade orden charge carrier relaxation.

  1. 6. Excited state dynamics in low-dimensional perovskite nanocrystals

    Författare :Weihua Lin; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Two-dimensional perovskite; Ultrafast spectroscopy; Single crystal; Nanocrystals; Hot carrier cooling;

    Sammanfattning : Two-dimensional (2D) perovskites have emerged as promising building blocks for optoelectronic applications. To fabricate high-performance devices, the relation between the material structures and their function in terms of excited state and charge carrier dynamics need to be well understood. LÄS MER

  3. 7. Electric Charges on Insulator Surfaces and their Influence on Insulator Performance

    Författare :Hans Sjöstedt; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EPDM; silicone rubber; material properties; surface potential measurements; outdoor insulation materials;

    Sammanfattning : AbstractPolymeric materials used in high voltage insulation systems are subjected to electric fields which can be strong enough to initiate electrical discharges in the surrounding gas environment. Generated electrical charges may be deposited on polymer surfaces and alter electric field distributions, thus affecting insulation performance and their corresponding breakdown characteristics. LÄS MER

  4. 8. Kinetic Monte Carlo Modelling of Organic Photovoltaic Devices

    Författare :Tanvi Upreti; Martijn Kemerink; Feng Gao; Tayebeh Ameri; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Organic photovoltaics (OPVs) is a rapidly growing low-cost PV technology sector that relies on multiple benefits of organic semiconductors viz. being environmental-friendly with a simplified processing/fabrication and tunable properties. LÄS MER

  5. 9. Electronic and Photonic Quantum Devices

    Författare :Erik Forsberg; KTH; []
    Nyckelord :electron waveguide devices; nanoelectronics; ballistic transport; electroabsorption modulators; Rabi oscillations; quantum measurements;

    Sammanfattning : In this thesis various subjects at the crossroads of quantummechanics and device physics are treated, spanning from afundamental study on quantum measurements to fabricationtechniques of controlling gates for nanoelectroniccomponents.Electron waveguide components, i.e. LÄS MER

  7. 10. Spin Properties in InAs/GaAs Quantum Dot based Nanostructures

    Författare :Jan Beyer; Weimin Chen; Irina Buyanova; Hongqi Xu; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Semiconductor quantum dots (QDs) are a promising building block of future spin-functional devices for applications in spintronics and quantum information processing. Essential to the realization of such devices is our ability to create a desired spin orientation of charge carriers (electrons and holes), typically via injection of spin polarized carriers from other parts of the QD structures. LÄS MER