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  • 1
    Electronic Resource
    Electronic Resource
    Conduction mechanisms in erbium silicide Schottky diodes (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 3873-3879 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Conduction mechanisms in erbium silicide Schottky diodes on n-type silicon have been studied over a temperature range of 25 to 160 K. Thermionic emission is the dominant carrier transport mechanism above 70 K. Below this temperature, deviations are apparent in the zero-bias barrier height and ideality factor. However, the flat-band barrier height is shown to remain constant over the entire temperature range. The Fermi level is demonstrated to be pinned to the conduction band. A new quantity, the flat-band saturation current (Isf) is defined. Plots of n ln(Isf/T2) vs 1/T are found to give an excellent fit to the data over 28 orders of magnitude. From these plots the flat-band barrier height and the modified Richardson constant are obtained directly. This technique provides a completely self-consistent and more reliable way of obtaining these parameters than do previous methods. For low temperatures and low forward bias, recombination via tunneling through surface states becomes the dominant conduction mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.352899
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  • 2
    Electronic Resource
    Electronic Resource
    Electrical and infrared investigation of erbium silicide (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 2367-2371 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Schottky diodes fabricated from erbium silicide on n-type silicon have been studied to examine their suitability as infrared detectors. The devices were fabricated by thermal evaporation onto 〈100(approximately-greater-than) silicon. The electrical barrier height of 0.28 eV measured by current-voltage and current-voltage-temperature techniques is consistent with that measured by previous workers. The photon barrier height is found to be close to the electrical barrier height. The quantum efficiency at 2.0 μm is found to be 0.52%, comparable to that of unenhanced PtSi, while the dark current is less than 10−7 A cm−2 at 77 K. We conclude that ErSi2 has considerable potential for use in infrared detector arrays.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.351578
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  • 3
    Electronic Resource
    Electronic Resource
    Television memory and display unit (1985)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 2143-2146 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An inexpensive memory unit has been developed to store and display a grey-scale image. The format is 512×256×8 bits, and expansion to larger formats or color is straightforward. The memory unit can be loaded from a small microcomputer such as the Apple IIe, and thus brings image processing within reach of the small laboratory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138384
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  • 4
    Electronic Resource
    Electronic Resource
    Molecular hydrogen jets from the Orion nebula (1984)
    [s.l.] : Nature Publishing Group
    Nature 311 (1984), S. 236-237 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This survey was carried out using the Anglo-Australian Telescope in conjunction with the IR photometer and spectrometer. Areas of the sky were observed by scanning the telescope in a raster pattern, using the imaging mode with an aperture of 2 arc s diameter and a scan interval (1 pixel) of 1 arcs. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/311236a0
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  • 5
    Electronic Resource
    Electronic Resource
    A CCD image of the galactic centre (1982)
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 333-334 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The CCD image (Fig. 1) was taken at the prime focus of the Anglo-Australian Telescope (AAT) on 8 September 1981 dur-ing conditions of sub-arcsecond seeing. The CCD camera was built for the Anglo-Australian Observatory (AAO) by the Royal Greenwich Observatory, and uses as a detector an RCA SID 53612 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/296333a0
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  • 6
    Electronic Resource
    Electronic Resource
    Detection of interstellar HN 13 C (1976)
    [s.l.] : Nature Publishing Group
    Nature 262 (1976), S. 672-674 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 HN12C (a) and HN13C ( x 10) (b) in W51. Note the HN12C line is broader: resolution = 1 MHz ()3.3 km s?1). Fig. 2 HN12C (a) and HN13C (x 10) (b) in DR21 (HCN peak). Note HN12C line is significantly broader: resolution = 250 kHz ( 0.83 km s?1). Table 1 Results of observations Source name RA ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/262672a0
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  • 7
    Electronic Resource
    Electronic Resource
    An airborne far-infrared spectrometer for astronomical observations (1980)
    Springer
    International journal of infrared and millimeter waves 1 (1980), S. 15-25 
    Details
    ISSN: 1572-9559
    Keywords: astronomy ; far-infrared spectroscopy ; Fabry-Perot filters ; fine structure lines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A Fabry-Perot spectrometer for airborne observations of astronomical spectral lines has been designed for use in the 50 to 200 μm region of the far-infrared. The spectrometer uses a fixed wavelength Fabry-Perot filter cooled to 4.2 K in conjunction with a high order scanning Fabry-Perot at room temperature. This arrangement provides high spectral resolution and also minimizes the thermal background radiation on the detector. The instrument has been successfully used to study all the presently detected fine structure lines between 50 and 120 μm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01007063
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  • 8
    Electronic Resource
    Electronic Resource
    Far infrared fine structure lines in the interstellar medium (1980)
    Springer
    International journal of infrared and millimeter waves 1 (1980), S. 609-629 
    Details
    ISSN: 1572-9559
    Keywords: astronomy ; fine structure lines ; far-infrared spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Fine structure lines in the far-infrared have many simple properties that make them useful tools for diagnosing astrophysical plasmas. The line ratios are sensitive and accurate probes of density, elemental abundances, and ionization structure. In addition, studies of line shapes and Doppler shifts should prove valuable in studies of the gross dynamics of H II regions and galaxies. We present a review of the theory involved in the interpretation of these lines, and a summary of the observations made so far.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01013471
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