Search for dissertations about: "carrier trapping"

Showing result 1 - 5 of 25 swedish dissertations containing the words carrier trapping.

  2. 1. Dynamics of Photogenerated Charge Carriers in III-V Bulk and Nanowire Semiconductors

    Author : Xianshao Zou; NanoLund: Centre for Nanoscience; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Time-resolved spectroscopy; Group III-V semiconductor; Nanowires; Carrier recombination; Trapping; Passivation;

    Abstract : As a solution to solving energy consumption and environment problems, photovoltaics has become one type of the promising devices to convert solar energy into electricity directly. In some special areas like in space, a kind of photovoltaics with lightweight and reliable properties is needed to supply power. READ MORE

  4. 2. Light Trapping and Alternative Electrodes for Organic Photovoltaic Devices

    Author : Kristofer Tvingstedt; Olle Inganäs; Peter Peumans; Linköpings universitet; []
    Keywords : Light trapping; Organic solar cells; Tandem cells; Polymer solar cells; Plastsolceller; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : Organic materials, such as conjugated polymers, have emerged as a promising alternative for the production of inexpensive and flexible photovoltaic cells. As conjugated polymers are soluble, liquid based printing techniques enable production on large scale to a price much lower than that for inorganic based solar cells. READ MORE

  5. 3. Simulation and optical characterisation of carrier trapping in semi-insulating semiconductors

    Author : Andreas Gaarder; KTH; []
    Keywords : ;

    Abstract : .... READ MORE

  6. 4. Carrier dynamics in semiconductor quantum dots

    Author : Jörg Siegert; Ari Friberg; Jesper Mørk; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; quantum dots; photoluminescence; time-resolved; spectroscopy; semiconductor; Optics; Optik;

    Abstract : This thesis presents results of time-resolved photoluminescence experiments conducted on several different self-assembled InGaAs/GaAs and InAs/GaAs semiconductor quantum dot (QD) structures. Depending on the application in mind, different structural, electronic or optical properties have a different weight of importance. READ MORE

  7. 5. Carrier Lifetime Relevant Deep Levels in SiC

    Author : Ian Don Booker; Einar Sveinbjörnsson; Erik Janzén; Anthony Peaker; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Silicon carbide; Deep level transient spectroscopy; Deep level; Carrier lifetime; Time-resolved photoluminescence;

    Abstract : Silicon carbide (SiC) is currently under development for high power bipolar devices such as insulated gate bipolar transistors (IGBTs). A major issue for these devices is the charge carrier lifetime, which, in the absence of structural defects such as dislocations, is influenced by point defects and their associated deep levels. READ MORE