کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1674854 | 1518118 | 2005 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Photoluminescence and Raman spectroscopy of polycrystalline AgInTe2 Photoluminescence and Raman spectroscopy of polycrystalline AgInTe2](/preview/png/1674854.png)
We studied the photoluminescence characteristics of polycrystalline chalcopyrite AgInTe2. The spectra showed three bands. The first band has the maximum at 1.023 eV, and it has one LO-phonon replica with the energy of 25 meV. The second band has the maximum at 0.959 eV and two phonon replicas with the same LO-phonon energy. The third broad band has the maximum at 0.741 eV. The dependence of the spectra on the temperature and the excitation power were recorded. According to the observed j-shift and thermal quenching, the 0.959 eV band can be assigned to a donor–acceptor pair recombination with the activation energy of 35 meV. Room temperature unpolarised Raman spectrum revealed six peaks. The lines observed at 122, 140, 217, and 266 cm−1 are assigned to A1, E1, or B1, E+B2, and longitudinal optical E modes, respectively.
Journal: Thin Solid Films - Volumes 480–481, 1 June 2005, Pages 246–249