Search for dissertations about: "infrared photodetectors"

Showing result 1 - 5 of 19 swedish dissertations containing the words infrared photodetectors.

2. 1. III-V Nanowire-based Infrared Photodetectors : Design, Fabrication and Characterization

   Author : Vishal Jain; Fasta tillståndets fysik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; nanowire; infrared; photodetector; APD; thermal imaging; telecommunication; fabrication; InP; InAsP; Fysicumarkivet A:2016:Jain;

   Abstract : Semiconductors are the backbone of almost every electrical or optical component, one of them being photodetectors. Photodetectors are used in many applications such as digital cameras or solar panels. They can also be designed to detect the omnipresent infrared radiation, discovered in 1800, which is invisible to human eye. READ MORE

4. 2. Infrared Photodetectors based on Nanowire Arrays with Embedded Quantum Heterostructures

   Author : Mohammad Karimi; NanoLund: Centre for Nanoscience; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nanowires; infrared photodetectors; intersubband nanowire photodetector; quantum discs-in-nanowire; high responsivity;

   Abstract : Optical sensors operating in the infrared range of the electromagnetic spectrum are key components in a variety ofapplications including optical communication, night vision, medical diagnosis, surveillance, and astronomy.Semiconductor nanowires have great potential for realizing broadband infrared photodetectors with excellentresponsivity, low dark current and low noise, and a unique compatibility with commercial silicon-based electronics. READ MORE

5. 3. Type-II interband quantum dot photodetectors

   Author : Oscar Gustafsson; Mattias Hammar; Wenquan Ma; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; photodetector; quantum dot; infrared; MOVPE; thermal imaging; type-II; photoluminescence; III V; InSb; InGaSb; InAs; SRA - ICT; SRA - Informations- och kommunikationsteknik;

   Abstract : Photon detectors based on single-crystalline materials are of great interest for high performance imaging applications due to their low noise and fast response. The major detector materials for sensing in the long-wavelength infrared (LWIR) band (8-14 µm) are currently HgCdTe (MCT) and AlGaAs/GaAs quantum wells (QW) used in intraband-based quantum-well infrared photodetectors (QWIPs). READ MORE

6. 4. Near-infrared photodetectors based on Si/SiGe nanostructures

   Author : Anders Elfving; Wei-Xin Ni; Thomas P. Pearsall; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; SiGe; Ge dots; nanostructures; molecular beam epitaxy; photodetector; Semiconductor physics; Halvledarfysik;

   Abstract : Two types of photodetectors containing Ge/Si quantum dots have been fabricated based on materials grown by molecular beam epitaxy and characterized with several experimental techniques. The aim was to study new device architectures with the implementation of Ge nanostructures, in order to obtain high detection efficiency in the near infrared range at room temperature. READ MORE

7. 5. Infrared Photodetectors based on InSb and InAs Nanostructures via Heterogeneous Integration-Rapid Melt Growth and Template Assisted Selective Epitaxy

   Author : Heera Menon; NanoLund: Centre for Nanoscience; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Rapid Melt Growth RMG ; Template Assisted Selective Epitaxy TASE ; InSb; InAs; infrared detectors; nBn detector; photoconductor; nanostructures; nanowires;

   Abstract : Monolithic heterogeneous integration of III-V semiconductors with the contemporary Si Complementary Metal Oxide Semiconductor (CMOS) technology has instigated a wide range of possibilities and functionalities in the semiconductor industry, in the field of digital circuits, optical sensors, light emitters, and high-frequency communication devices. However, the integration of III-V semiconductors is not trivial due to the differences in lattice parameters, polarity, and thermal expansion coefficient. READ MORE