Sökning: "photodiode"

Visar resultat 1 - 5 av 17 avhandlingar innehållade ordet photodiode.

  1. 1. Silicon Carbide High Temperature Photodetectors and Image Sensor

    Författare :Shuoben Hou; Mikael Östling; Carl-Mikael Zetterling; Per-Erik Hellström; Anthony O'Neill; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Silicon Carbide SiC ; high temperature; photodetector; photodiode; phototransistor; ultraviolet UV ; transistor-transistor logic TTL ; bipolar junction transistor BJT ; integrated circuit IC ; pixel sensor; image sensor; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : Silicon Carbide (SiC) has the advantages of ultraviolet (UV) sensing and high temperature characteristics because of its wide band gap. Both merits make SiC photodetectors very attractive in astronomy, oil drilling, combustion detection, biology and medical applications. LÄS MER

  3. 2. Synthesis and Characterisation of Conjugated Polymers with High Electron Affinity

    Författare :Maria Jonforsen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; light-emitting diode; solar cell; quinoxaline; conjugated polymer; photodiode; 4-b]pyrazine; pyrido[3; synthesis; photo-oxidation; electron affinity; pyridine;

    Sammanfattning : This thesis describes synthesis and characterisation of conjugated polymers with high electron affinities. Polymers of this type are desired, for example, for use in light-emitting devices or as electron accepting material in photodiodes/solar cells. LÄS MER

  4. 3. Polymer/polymer blends in organic photovoltaic and photodiode devices

    Författare :Yuxin Xia; Olle Inganäs; Ergang Wang; Hin-Lap Yip; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Organic photovoltaics devices (OPV) have attracted attentions of scientist for their potential as inexpensive, lightweight, flexible and suitable for roll-to-roll production. In recent years, considerable attention has been focused on new acceptor materials, either polymeric or small molecules, to replace the once dominating fullerene derivatives. LÄS MER

  5. 4. Generation, Modulation, and Detection of Signals in Microwave Photonic Systems

    Författare :Andreas Wiberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microwave photonics; radio over fiber; mm-wave generation; PSK; QAM; subcarrier modulation; photonic frequency multiplication; spurious free dynamic range third-order intercept point; millimeter-wave photonics; uni-travelling-carrier photodiode; millimeter-wave communication system;

    Sammanfattning : This thesis deals with the use of photonic technology in microwave and millimeter-wave applications. The two major parts of this work have been techniques for transmission and signal generation. LÄS MER

  7. 5. Directly exposed electron-detectors for electron energy-loss spectroscopy

    Författare :Claes Orsholm; Tomas Lindblad; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; fysik;

    Sammanfattning : This thesis investigates the possibilities of using planar silicon-devices such as the photodiode array and the charge-coupled device (CCD) as directly exposed electron-detectors for electron energy-loss spectroscopy. The aim is to achieve an acceptable performance at low signal intensities, enabling single electron detection. LÄS MER