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In a previous paper the authors (see J. Physique, vol.41, p.707, 1980) showed by kinetics measurements a donor-acceptor transition peaked at 1.59 eV in CuGaSe 2 . They confirm here the fundamental parameters of this emission by measurements in terms of temperature and excitation rate. They show the influence of weak phonon coupling on intra-pairs recombination. An original deconvolution method which takes account of this influence permits the authors to find the experimental spectra again.
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Poure et al. (1981) studied this question.
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