Abstract
The band of intrinsic (e–h) radiation emission by the subsurface potential barriers of crystal grains and the edge doublet band arising as LO-phonon replicas of the e–h band are observed in the spectra of the low-temperature (4.2 K) photoluminescence of fine-grained (with a grain size of d cr ≤ 1 µm) CdTe films. Film do** with the In impurity results in quenching of the doublet band, while heat treatment leads to activation of the intrinsic band, a short-wavelength shift of the red boundary (ΔE r = 16–29 meV) and the halfwidth modulation (ΔA = 6–17 meV) of which correlate with the height of micropotential barriers and the temperature of recombining hot photocarriers.
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References
A. V. Kvit, Yu. V. Klevkov, S. A. Medvedev, V. S. Bagaev, A. Perestoronin, and A. F. Plotnikov, Semiconductors 34, 17 (2000).
V. S. Bagaev, Yu. V. Klevkov, S. A. Kolosov, V. S. Krivobok, and A. A. Shepel’, Phys. Solid State 52, 37 (2010).
V. V. Ushakov and Yu. V. Klevkov, Semiconductors 37, 1042 (2003).
V. V. Ushakov and Yu. V. Klevkov, Semiconductors 37, 1259 (2003).
V. P. Veleshchuk, A. Baidullaeva, A. I. Vlasenko, V. A. Gnatyuk, B. K. Dauletmuratov, S. N. Levitskii, O. V. Lyashenko, and T. Aoki, Phys. Solid State 52, 469 (2010).
S. A. Permogorov, T. P. Surkova, and A. N. Tenishev, Phys. Solid State 40, 826 (1998).
M. A. Karimov and N. Kh. Yuldashev, Bull. Russ. Acad. Sci.: Phys. 71, 1151 (2007).
M. A. Karimov and N. Kh. Yuldashev, Fiz. Inzh. Poverkhn. 2 (5), 42 (2006).
V. I. Gavrilenko, A. M. Grekhov, D. V. Korbutyak, and V. G. Litovchenko, Optical Properties of Semiconductors: A Handbook, (Kiev, Nauk. dumka, 1987), Chap. 3, pp. 410, 414 [in Russian].
A. N. Georgobiani and M. K. Sheinkman, in Physics of II–VI Compounds (Nauka, Moscow, 1986), Supplement, p. 292 [in Russian].
O. A. Matveev and A. I. Terent’ev, Semiconductors 32, 144 (1998).
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Original Russian Text © B.Z. Polvonov, N.Kh. Yuldashev, 2016, published in Fizika i Tekhnika Poluprovodnikov, 2016, Vol. 50, No. 8, pp. 1021–1024.
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Polvonov, B.Z., Yuldashev, N.K. Spectra of low-temperature photoluminescence in thin polycrystalline CdTe films. Semiconductors 50, 1001–1004 (2016). https://doi.org/10.1134/S1063782616080194
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DOI: https://doi.org/10.1134/S1063782616080194