Essays about: "IR-detector"
Found 5 essays containing the word IR-detector.
-
1. NiSi(C) Schottky diodes for IR detection
University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)Abstract : Un-cooled bolometer arrays have been considered as good choices for detection of infrared waves in the ranges of 3-5μm (MWIR: mid wavelength infrared) and 8-12μm (LWIR: long wavelength infrared). Advantages are found in their relative simplicity of mechanism and design, hence, fabrication cost, when compared to detectors working based on photon detection mechanisms. READ MORE
-
2. Process optimization of IR detectors based on In(Ga)Sb QDs in InAs matrix
University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)Abstract : This diploma project has been focused on optimization of the D2B IR detector fabrication process using different mesa sidewall treatments and passivation methods. X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and atomic force microscope (AFM) measurements have been carried out on samples treated by different wet etching methods, to analyze their surface chemical composition and roughness. READ MORE
-
3. Growth and characterization of Ge quantum dots on SiGe-based multilayer structures
University essay from Institutionen för fysik, kemi och biologiAbstract : Thermistor material can be used to fabricate un-cooled IR detectors their figure of merit is the Temperature Coefficient of Resistance (TCR). Ge dots in Si can act as a thermistor material and they have a theoretical TCR higher than for SiGe layers but they suffer from intermixing of Si into the Ge dots. READ MORE
-
4. Structural and optical characterization of Si/Ge quantum dots
University essay from Institutionen för fysik, kemi och biologiAbstract : In this study silicon-germanium quantum dots grown on silicon have been investigated. The aim of the work was to find quantum dots suitable for use as a thermistor material. The quantum dots were produced at KTH, Stockholm, using a RPCVD reactor that is designed for industrial production. READ MORE
-
5. Modelling of gyro in an IR seeker for real-time simulation
University essay from Institutionen för systemteknikAbstract : The target tracking system of an IR (InfraRed) guided missile is constantly subjected to disturbances due to the linear and angular motion of the missile. To diminish these LOS (Line Of Sight) disturbances the seeker of the missile can be built from a free gyroscope mounted in a very low friction suspension. READ MORE