Photoacoustic operation modes for determination of absorption spectra of SiGe mixed crystals

• Autorzy: Maliński M. , Chrobak Ł.
• Języki publikacji: EN

Abstrakty

EN

This paper presents comparison of two photoacoustic modes of determination of optical absorption spectra of semiconductors illustrated with the results obtained for SiGe crystals. Experimental transmission and absorption photoacoustic spectra of SiGe crystals as well as appropriate models for determination of optical absorption coefficient spectra are given. The idea and experimental set-up of the analyzed methods are presented too. From the fitting procedure of theoretical characteristics to experimental transmission and absorption photoacoustic spectra and after computations of the optical absorption coefficient spectra, three components of the optical absorption coefficient spectra of SiGe crystals were identified, i.e., band to band transitions, Urbach tail and free carriers absorption. Their parameters are given and discussed in the paper. At the end, the advantages and disadvantages of both methods are discussed. To the best of our knowledge, such a comparison of the two PA methods of determination of the optical absorption spectra has not been done before.

Słowa kluczowe

EN

SiGe; optical absorption spectra; photoacoustic methods

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2010
• Tom: Vol. 18, No. 2
• Strony: 190--196
• Opis fizyczny: Bibliogr. 18 poz., il., wykr.

Twórcy

autor

Maliński M.

autor

Chrobak Ł.

• Department of Electronics and Computer Studies, Technical University of Koszalin, 2 Śniadeckich Str., 75-453 Koszalin, Poland,

Bibliografia

• [1] D. J. Paul: Silicon germanium heterostructures in electronics: The present and the future. Thin Solid Films 321, 172-180, 1998.
• [2] K. Nakajima, S. Kodama, S. Miyashita, G. Sazaki and S. Hiyamizu: Growth of Ge-rich SixGe1-x single crystal with uniform composition (x-0.02) on a compositionally graded crystal for use as GaAs solar cells. J. Cryst. Growth 205, 270-276, 1999.
• [3] S. Sedky, P. Fiorini, M. Caymax, S. Loretti, K. Baert, L. Hermans and R. Mertens: Structural and mechanical properties of polycrystalline silicon germanium for micromachining applications. J. Microelectromech. S. 7, 365-372, 1998.
• [4] T. Honda, M. Suezawe and K. Sumino: Growth and characterization of bulk Si-Ge single crystals. Jpn. J. Appl. Phys. 1 A35, 5980-5985, 1996.
• [5] M. Franz, K. P. Pressel and P. Gaworzynski: Alloy effects in boron doped Si-rich SiGe bulk crystals. J. Appl. Phys. 84, 709-712, 1998.
• [6] K. Wang and X. Z. Zheng: Thermal properties of SiGe. Proc. INSPEC′94, EMIS Datareviews Series No. 12, 70-78, 1995.
• [7] A. Patrin, M. Maliński and L. Bychto: Influence of the growth technology on the thermal parameters of silicon-photoacoustic studies. Proc. 22nd Conf. IMAPS-Poland, Rytro-Kraków, 267-270, 1998.
• [8] A. Patrin, N. V. Abrasimov, M. Maliński and L. Bychto: Photoacoustic approach for Six Ge1-x thermal parameters measurements. Proc. 24th Conf. IMAPS-Poland, Rytro-Kraków, 355-359, 2000.
• [9] A. Patrin N. Abrosimov, M. Maliński and L. Bychto: The influence of the composition of Si-Ge mixed crystals on thermal diffusivity: photoacoustic approach. Sol. Energ. Mat. Sol. C. 72, 579-587, 2002.
• [10] A. Rosencwaig and A. Gersho: Theory of acoustic effect with solids. J. Appl. Phys. 47, 64-68, 1976.
• [11] A. Rosencwaig: Photo-acoustic spectroscopy of solids. Rev. Sci. Instrum. 48, 1133-1138, 1977.
• [12] J. I. Pankove: Optical Processes in Semiconductors, Dover, New York, 1975.
• [13] M. H. Chan, S. K. So and K. W. Cheah: Optical absorption of free standing porous silicon films. J. Appl. Phys. 79, 3273-3276, 1996.
• [14] J. R. Chelikowsky and M. L. Cohen: Non-local pseudopotential calculations of the electronic structure of eleven diamond and zinc blende semiconductors. Phys. Rev. B14, 556-582, 1976.
• [15] A. K. Gosh, B. K. Sarkar and B. K. Chaudhuri: A photoacoustic spectroscopic investigation of the optical energy gap in Zn-Mn-Se type dilute semiconductor materials. Solid State Commun. 113, 41-45, 2000.
• [16] C. A. Benett and R. R. Patty: Thermal wave interferometry: a potential application of the photoacoustic effect. Appl. Optics 21 49-58, 1982.
• [17] M. Maliński: Temperature distribution formulae - Applications in photoacoustics. Arch. Acoust. 27, 217-224, 2002.
• [18] M. Maliński: Photoacoustics and photoacoustic spectroscopy of semiconductor materials. TU of Koszalin, ISSN 0239-7129, 2004.