Abstract
It is shown that the photocurrent spectrum I(λ) of the Cd1 − x Zn x Te (x= 0.1–0.2) alloys can be transformed into individual subsets of the approximation C a and detailing C d coefficients by means of the discrete wavelet decomposition, and the distribution of these coefficients is very sensitive to the local photoresponse perturbations at different scale levels. The representation of these subsets in the form of parametrical wavelet signatures C d = f(C a) made it possible to pass from the information wavelet coefficient space to the dynamic space of photoinduced states. The analysis of the modifications of the C d = f(C a) configurations and areas, which they cover at each scale level of the measurements of the cyclic photocurrent spectrum, made it possible to reveal the latent reversible and irreversible local changes in them.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Yu. D. Tret’yakov, N. N. Oleinikov, E. A. Gudilin, A. A. Vertgel, and A. N. Baranov, Neorg. Mater. 30, 29 (1994).
V. K. Komar’, V. P. Migal’, S. V. Sulima, and A. S. Fomin, Fiz. Tekh. Poluprovodn. 40, 133 (2006) [Semiconductors 40, 128 (2006)].
V. P. Migal’ and A. S. Fomin, Pis’ma Zh. Tekh. Fiz. 32(11), 44 (2006) [Tech. Phys. Lett. 32, 484 (2006)].
V. Komar, A. Gektin, D. Nalivaiko, I. Klimenko, V. Mygal, O. Panchuk, and A. Rybka, Nucl. Instrum. Meth. Phys. Res. 458(1–2), 113 (2001).
S. Bergmann, J. Ihmels, and N. Barkai, Phys. Rev. E 67, 031902 (2003).
I. N. Dremin, O. V. Ivanov, and V. A. Nechitailo, Usp. Fiz. Nauk 171, 465 (2001) [Phys. Usp. 44, 447 (2001)].
V. P. Migal’. Fiz. Tekh. Poluprovodn. 35, 1188 (2001) [Semiconductors 35, 1135 (2001)].
B. B. Kadomtsev, Usp. Fiz. Nauk 169, 507 (1999) [Phys. Usp. 42, 435 (1999)].
V. P. Migal’ and A. S. Fomin, Neorg. Mater. 43, 1316 (2007).
V. P. Migal’, and A. S. Fomin, Fiz. Tekh. Poluprovodn. 40, 408 (2006) [Semiconductors 40, 403 (2006)].
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.V. But, V.P. Mygal, A.S. Phomin, 2009, published in Fizika i Tekhnika Poluprovodnikov, 2009, Vol. 43, No. 5, pp. 608–612.
Rights and permissions
About this article
Cite this article
But, A.V., Mygal, V.P. & Phomin, A.S. Photocurrent spectra in parametrical form and their discrete wavelet decomposition for CdZnTe alloys. Semiconductors 43, 581–585 (2009). https://doi.org/10.1134/S1063782609050066
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063782609050066