Yayıncı "Wiley-V C H Verlag GMBH" Bildiri Koleksiyonu için listeleme
Toplam kayıt 11, listelenen: 1-11
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Broadband staircase quantum well infrared photodetector: working in long wavelength infrared range (LWIR)
(Wiley-V C H Verlag GMBH, 2007)We present a theoretical investigation of a staircase-like quantum well infrared photodetector (QWIP). it detects wavelength between 7.6 mu m and 13.5 mu m range at an applied electric field of F = 1.9x10(4) V/cm at 77 K. ... -
Determination of dislocation densities in InN
(Wiley-V C H Verlag GMBH, 2012)The magneto-transport measurements, carried out at magnetic fields up to 11 T and in the temperature range between 1.8 K and 300 K, are used to investigate the scattering mechanisms in GaN/InN/AlN double heterojunctions. ... -
Determination of the in-plane effective mass and quantum lifetime of 2D electrons in AlGaN/GaN based HEMTs
(Wiley-V C H Verlag GMBH, 2011)Magnetoresistance and Hall resistance measurements have been used to investigate the electronic transport properties of AlGaN/GaN based HEMTs. The Shubnikov-de Haas (SdH) oscillations from magnetoresistance, is obtained ... -
Effect of substrate temperature on some of the optical parameters of CuInS2 films
(Wiley-V C H Verlag GMBH, 2007)Polycrystalline CuInS2 films have been grown by spray pyrolysis method at different substrate temperatures, a simple method which can produce low cost and highly absorbing samples. Optical characteristics of the CuInS2 ... -
Electrical and optical properties of undoped and In-doped ZnO thin films
(Wiley-V C H Verlag GMBH, 2007)Transparent conducting undoped and indium-doped zinc oxide (ZnO) thin films have been deposited by the spray pyrolysis method at 350 degrees C substrate temperature. X-ray diffraction spectra of the films have shown that ... -
I-V characterization of a staircase quantum well infrared photodetector
(Wiley-V C H Verlag GMBH, 2011)In this work, a quantum well infrared photodetector structure which consists of three different well thicknesses with three different barrier compositions producing a staircase-like conduction band profile with the reputation ... -
Investigation of carbon produced by methane pulsed discharge
(Wiley-V C H Verlag GMBH, 2007)Pulsed discharges of methane gas at atmospheric pressure were generated using high voltage power supply (20 kV-25 kHz) to produce the carbon. The pulsed discharge of methane gas was generated between two sharp wolfram ... -
Longitudinal polar optical phonons in InN/GaN single and double heterostructures
(Wiley-V C H Verlag GMBH, 2011)Longitudinal optical phonon energy in InN epi-layers has been determined independently from the Raman spectroscopy and temperature dependent Hall mobility measurements. Raman spectroscopy technique can be used to obtain ... -
Optical absorption and spectroscopic properties of thulium doped (TeO2)(Nb2O5)(TiO2) glasses
(Wiley-V C H Verlag GMBH, 2011)A type of thulium doped tellurite based optical glasses was prepared through conventional melt quenching technique. In the experiments, the effect of different Tm3+ ion concentration and glass composition on optical ... -
Performance study of SQW GaInNAs fabry-perot lasers
(Wiley-V C H Verlag GMBH, 2007)The work presented here is concerned with studies of the operational characteristics of single-quantum-well GaInNAs/GaAs Fabry-Perot lasers, where identical layer structures with differing cavity lengths are evaluated both ... -
Superconductivity in MBE grown InN
(Wiley-V C H Verlag GMBH, 2011)We present the experimental investigation of superconductivity in unintentionally doped MBE grown InN samples with various InN film thicknesses. A significant change in resistivity was observed at 3.82K, for an 1080 nm InN ...