Optical filters on the basis of a-Ag2Te thin films

Sh. M. Alekperova; A. A. Aliyev; Kh. D. Jalilova; I. A. Ahmedov

doi:10.1117/12.629020

7 June 2005 Optical filters on the basis of α-Ag₂Te thin films

Sh. M. Alekperova, A. A. Aliyev, Kh. D. Jalilova, I. A. Ahmedov

Proceedings Volume 5834, 18th International Conference on Photoelectronics and Night Vision Devices; (2005) https://doi.org/10.1117/12.629020
Event: 18th International Conference on Photoelectronics and Night Vision Devices and Quantum Informatics 2004, 2004, Moscow, Russian Federation

Abstract

The investigation of α-Ag₂Te thin films optical properties by reflection and transmission spectra in IR-range are carried out. In absorption spectra there is an area (0.08÷0.056 eV) of free carriers absorption with the sharp increasing of the absorption constant. The fine structure of absorption with peak at 0.09 eV and half-width 0.0075 eV connected with absorption of impurity transition by a valence band-small-sized donor is found. For the first time at room temperature in experimental reflection spectrum R (λ) of α-Ag₂Te behind a plasma minimum (1050 cm^-1) are detected two further minimum (760cm^-1 and 500 cm^-1) stipulated by interaction of plasmons and long-wave longitudinal optical phonons. In the proper absorption region α (λ) spectrum presents the narrow sharp peak with half-width 0.03eV and steep slope to the short-wave. The indicated features of α-Ag₂Te thin films optical spectrums allow considering this films as a perspective material for IR optical filters manufacturing.

Citation Download Citation

Sh. M. Alekperova, A. A. Aliyev, Kh. D. Jalilova, and I. A. Ahmedov "Optical filters on the basis of α-Ag₂Te thin films", Proc. SPIE 5834, 18th International Conference on Photoelectronics and Night Vision Devices, (7 June 2005); https://doi.org/10.1117/12.629020

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