Méthodes d'exploitation des transitoires de capacité en spectroscopie des niveaux profonds (DTLS) : eapplication à des jonctions Au-Inp

Abstract : The topic of this thesis was to compare different measurement methods to analyse deep centers in Au-InP diodes. After a brief summary of the physical principles necessary to understand the deep level transient spectroscopy (DTLS) and the commonly used measurement modes (boxcar and lock-in systems), a presentation of numerical methods used for the transient analysis is done. Two kinds of methods are distinguished : the correlation and the isothermal methods. The two main factors used to estimate the results given by the correlation function are : the spectral resolution and the signal to noise ratio. In ordeer to improve the quality of the spectra, smoothing procedures have been used. In another way, to obtain a more precise analys of the spectra, a method named five emission rate method has been introduced. Isothermal methods reduce the measurement time owing to the limited number of capacitance transients used, on the other hand, the accuracy of the results is not so good. To summarize, we can say that several numerical methods (especially among the correlation methods) applied to Au-Inp diodes give us more precise results than conventional methods, like boxcar or lock-in systems
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Etienne Losson. Méthodes d'exploitation des transitoires de capacité en spectroscopie des niveaux profonds (DTLS) : eapplication à des jonctions Au-Inp. Autre. Université Paul Verlaine - Metz, 1992. Français. ⟨NNT : 1992METZ023S⟩. ⟨tel-01775984⟩

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