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27 June 2006 Long wavelength response of unstressed and stressed Ge:Ga detectors
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Abstract
Photoconductivity spectra of unstressed and stressed Ge:Ga detectors were measured. The experiments were performed with a polarizing step scan Fourier transform spectrometer using the synchrotron facility BESSY, which was operated in a dedicated mode with a low momentum compaction factor. By this way powerful and coherent synchrotron radiation below 50 cm-1 was generated. We observed a significant response of unstressed and stressed Ge:Ga detectors below 50 cm-1 and 25 cm-1, respectively. This response can be attributed to transitions between bound excited states or from bound excited states to the valence band. The results indicate that in germanium detectors a fraction of the recombining holes is captured into bound excited states.
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H.-W. Hübers, S. G. Pavlov, K. Holldack, U. Schade, and G. Wüstefeld "Long wavelength response of unstressed and stressed Ge:Ga detectors", Proc. SPIE 6275, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, 627505 (27 June 2006); https://doi.org/10.1117/12.671580
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