Mario Guzzi
Full professor
Contact
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Main Research Interest
- Experimental study of optical properties of semiconductor materials and semiconductor quantum structures of interest for microelectronics, optoelectronics and photovoltaic applications.
Publications
- F. Pezzoli, F. Isa, G. Isella, C. V. Falub, T. Kreiliger, M. Salvalaglio, R. Bergamaschini, E. Grilli, M. Guzzi, H. von Känel, and L. Miglio: Ge crystals on Si show their light, Phys. Rev. App. 1, 044005 (2014).
- S. Cecchi, E. Gatti, D. Chrastina, J. Frigerio, E. Müller Gubler, D. J. Paul, M. Guzzi, and G. Isella: Thin SiGe virtual substrates for Ge heterostructure integration on silicon, J. Appl. Phys. 115, 093502 (2014).
- E. Gatti, A. Giorgioni, E. Grilli, M. Guzzi, D. Chrastina, G. Isella, A. Chernikov, K. Kolata, V. Bornwasser, N. S. Köster, R. Woscholski, and S. Chatterjee: Relaxation and recombination processes in Ge/SiGe multiple quantum wells, AIP Conf. Proc. 1566, 470 (2013).
- S. Sanguinetti, M. Guzzi, E. Gatti, and M. Gurioli: Chapter 12 -- photoluminescence characterization of structural and electronic properties of semiconductor quantum wells.In G. Agostini and C. Lamberti (eds.), Heterostructures and Nanostructures (Second Edition), 509--556. Elsevier B.V. (2013).
- E. Bonera, R. Gatti, G. Isella, G. Norga, A. Picco, E. Grilli, M. Guzzi, M. Texier, and B. Pichaud: Dislocation distribution across ultrathin silicon-on-insulator with epitaxial SiGe stressor, Appl. Phys. Lett. 103, 053104 (2013).
- F. Pezzoli, L. Qing, A. Giorgioni, G. I. E. Grilli, M. Guzzi, and H. Dery: Spin and energy relaxation in germanium studied by spin-polarized direct-gap photoluminescence, Phys. Rev. B 88, 045204 (2013).
- F. Pezzoli, F. Isa, G. Isella, C. V. Falub, T. Kreiliger, M. Salvalaglio, R. Bergamaschini, E. Grilli, M. Guzzi, H. von Känel, and L. Miglio: Germanium crystals on silicon show their light, arXiv.org e-Print archive cond-mat, arXiv:1306.5270 (2013).
- G. Isella, F. Bottegoni, S. Cecchi, A. Ferrari, F. Ciccacci, F. Pezzoli, A. Giorgioni, E. Gatti, E. Grilli, M. Guzzi, C. Lange, N. S. Köster, R. Woscholski, S. Chatterjee, D. Trivedi, P. Li, Y. Song, , and H. Dery: Optical spin orientation in SiGe heterostructures, ECS Transactions 50, 831 (2013).
- A. Giorgioni, F. Pezzoli, E. Gatti, S. Cecchi, C. K. Inoki, C. Deneke, E. Grilli, G. Isella, and M. Guzzi: Optical tailoring of carrier spin polarization in Ge/SiGe multiple quantum wells, Appl. Phys. Lett. 102, 012408 (2013).
- K. Kolata, N. S. Köster, A. Chernikov, M. J. Drexler, E. Gatti, S. Cecchi, D. Chrastina, G. Isella, M. Guzzi, and S. Chatterjee: Dephasing in Ge/SiGe quantum wells measured by means of coherent oscillations, Phys. Rev. B 86, 201303(R) (2012).
- A. Picco, E. Bonera, F. Pezzoli, E. Grilli, O. G. Schmidt, F. Isa, S. Cecchi, and M. Guzzi: Composition profiling of inhomogeneous SiGe nanostructures by Raman spectroscopy, Nanoscale Res. Lett. 7, 633 (2012).
- F. Pezzoli, F. Bottegoni, D. Trivedi, F. Ciccacci, A. Giorgioni, P. Li, S. Cecchi, E. Grilli, Y. Song, M. Guzzi, H. Dery, and G. Isella: Optical spin injection and spin lifetime in Ge heterostructures, Phys. Rev. Lett. 108, 156603 (2012).
- A. Giorgioni, E. Gatti, E. Grilli, A. Chernikov, S. Chatterjee, D. Chrastina, G. Isella, and M. Guzzi: Photoluminescence decay of direct and indirect transitions in Ge/SiGe multiple quantum wells, J. Appl. Phys. 111, 013501 (2012).
- G. Isella, F. Bottegoni, F. Pezzoli, S. Cecchi, E. Gatti, D. Chrastina, E. Grilli, M. Guzzi, and F. Ciccacci: Optical spin injection in SiGe heterostructures.In H.-J. M. Drouhin, J.-E. Wegrowe, and M. Razeghi (eds.), Spintronics IV, volume Proc. SPIE 8100, 810007 (2011).
- E. Gatti, E. Grilli, M. Guzzi, D. Chrastina, G. Isella, A. Chernikov, V. Bornwasser, N. Köster, R. Woscholski, and S. Chatterjee: Photoluminescence and ultrafast inter-subband relaxation in Ge/SiGe multiple quantum wells, Phys. Rev. B 84, 245319 (2011).
- E. Gatti, E. Grilli, M. Guzzi, D. Chrastina, G. Isella, and H. von Känel: Room temperature photoluminescence of Ge multiple quantum wells with Ge-rich barriers, Appl. Phys. Lett. 98, 031106 (2011).
- A. Picco, E. Bonera, E. Grilli, M. Guzzi, M. Giarola, G. Mariotto, D. Chrastina, and G. Isella: Raman efficiency in SiGe alloys, Phys. Rev. B 82, 115317 (2010).
- A. Picco, E. Bonera, E. Grilli, M. Guzzi, M. Giarola, G. Mariotto, and D. Chrastina: Determination of Raman efficiency in SiGe alloys, AIP Conf. Proc. 1267, 251 (2010).
- E. Bonera, F. Pezzoli, A. Picco, G. Vastola, M. Stoffel, E. Grilli, M. Guzzi, A. Rastelli, O. G. Schmidt, and L. Miglio: Strain in a single ultrathin silicon layer on top of SiGe islands: Raman spectroscopy and simulations, Phys. Rev. B 79, 075321 (2009).
- M. Bonfanti, E. Grilli, M. Guzzi, D. Chrastina, G. Isella, H. von Känel, and H. Sigg: Direct-gap related optical transitions in Ge/SiGe quantum wells with Ge-rich barriers, Physica E 41, 972 (2009).
- F. Pezzoli, E. Bonera, M. Bollani, S. Sanguinetti, E. Grilli, M. Guzzi, G. Isella, D. Chrastina, and H. von Känel: Raman spectroscopy for the analysis of temperature-dependent plastic relaxation of SiGe layers, Acta Phys. Pol. A 116, 78 (2009).
- E. Poliani, C. Somaschini, S. Sanguinetti, E. Grilli, M. Guzzi, A. Le Donne, S. Binetti, D. Chrastina, and G. Isella: Tuning by means of laser annealing of electronic and structural properties of nc-Si/a-Si:H, Mat. Sci. Eng. B 159--160, 31 (2009).
- A. Trita, F. Bragheri, I. Cristiani, V. Degiorgio, D. Chrastina, D. Colombo, G. Isella, H. von Känel, F. Gramm, E. Müller, M. Döbeli, E. Bonera, R. Gatti, F. Pezzoli, E. Grilli, M. Guzzi, and L. Miglio: Impact of misfit dislocations on wavefront distortion in Si/SiGe/Si optical waveguides, Opt. Commun. 282, 4716 (2009).
- M. Virgilio, M. Bonfanti, D. Chrastina, A. Neels, G. Isella, E. Grilli, M. Guzzi, G. Grosso, H. Sigg, and H. von Känel: Polarization-dependent absorption in Ge/SiGe multiple quantum wells: theory and experiment, Phys. Rev. B 79, 075323 (2009).
- M. Bonfanti, E. Grilli, M. Guzzi, M. Virgilio, G. Grosso, D. Chrastina, G. Isella, H. von Känel, and A. Neels: Optical transitions in Ge/SiGe multiple quantum wells with Ge-rich barriers, Phys. Rev. B 78, 041407(R) (2008).
- D. Chrastina, A. Neels, M. Bonfanti, M. Virgilio, G. Isella, E. Grilli, M. Guzzi, G. Grosso, H. Sigg, and H. von Känel: Ge/SiGe multiple quantum wells for optical applications.In IEEE 5th Int. Conf. Group IV Photonics, 194--196 (2008).
- F. Pezzoli, E. Bonera, E. Grilli, M. Guzzi, S. Sanguinetti, D. Chrastina, G. Isella, H. von Känel, E. Wintersberger, J. Stangl, and G. Bauer: Raman spectroscopy determination of composition and strain in Si1-xGex/Si heterostructures, Mat. Sci. Semicond. Process. 11, 279 (2008).
- F. Pezzoli, E. Bonera, E. Grilli, M. Guzzi, S. Sanguinetti, D. Chrastina, G. Isella, H. von Känel, E. Wintersberger, J. Stangl, and G. Bauer: Phonon strain shift coefficients in Si1-xGex alloys, J. Appl. Phys. 103, 093521 (2008).
- S. Sanguinetti, T. Mano, A. Gerosa, C. Somaschini, S. Bietti, N. Koguchi, E. Grilli, M. Guzzi, M. Gurioli, and M. Abbarchi: Rapid thermal annealing effects on self-assembled quantum dot and quantum ring structures, J. Appl. Phys. 104, 113519 (2008).
- D. Colombo, E. Grilli, M. Guzzi, S. Sanguinetti, S. Marchionna, M. Bonfanti, A. Fedorov, H. von Känel, G. Isella, and E. Müller: Analysis of strain relaxation by microcracks in epitaxial GaAs grown on Ge/Si substrates, J. Appl. Phys. 101, 103519 (2007).
- F. Pezzoli, S. Sanguinetti, E. Bonera, E. Grilli, and M. Guzzi: Modelling of the phonon strain shift coefficients in Si1-xGex alloys, J. Phys. Conf. Ser. 92, 012152 (2007).
- D. Colombo, E. Grilli, M. Guzzi, S. Sanguinetti, A. Fedorov, H. von Känel, and G. Isella: Study of thermal strain relaxation in GaAs grown on Ge/Si substrates, J. Lumin. 121, 375 (2006).
- F. Pezzoli, E. Grilli, M. Guzzi, S. Sanguinetti, D. Chrastina, G. Isella, H. von Känel, E. Wintersberger, J. Stangl, and G. Bauer: Strain-induced shift of phonon modes in Si1-xGex alloys, Mat. Sci. Semicond. Process. 9, 541 (2006).
- F. Pezzoli, L. Martinelli, E. Grilli, M. Guzzi, S. Sanguinetti, M. Bollani, D. Chrastina, G. Isella, H. von Känel, E. Wintersberger, J. Stangl, and G. Bauer: Raman spectroscopy of Si1-xGex epilayers, Mat. Sci. Eng. B 124--125, 127 (2005).
- V. Mantovani, S. Sanguinetti, M. Guzzi, E. Grilli, M. Gurioli, K. Watanabe, and N. Koguchi: Study of post-growth annealing and Ga coverage effects in low-density GaAs/AlGaAs quantum dots grown by modified droplet epitaxy, Physica E 23, 377 (2004).
- D. Colombo, S. Sanguinetti, E. Grilli, M. Guzzi, L. Martinelli, M. Gurioli, P. Frigeri, G. Trevisi, and S. Franchi: Efficient room temperature carrier trapping in quantum dots by tailoring the wetting layer, J. Appl. Phys. 94, 6513 (2003).
- L. Martinelli, E. Grilli, M. Guzzi, and M. G. Grimaldi: Room-temperature electroluminescence of ion-beam-synthesized β-FeSi2 precipitates in silicon, Appl. Phys. Lett. 83, 794 (2003).
- S. Sanguinetti, M. Gurioli, E. Grilli, M. Guzzi, and M. Henini: Piezoelectric-induced quantum-confined Stark effect in self-assembled InAs quantum dots grown on (N11) GaAs substrates, Appl. Phys. Lett. 77, 1982 (2000).
- S. Sanguinetti, S. C. Fortina, A. Miotto, E. Grilli, M. Guzzi, M. Henini, A. Polimeni, and L. Eaves: Self-aggregation of InAs quantum dots on ( N11) GaAs substrates.Thin Solid Films 336, 9 (1998).
- L. Brusaferri, S. Sanguinetti, E. Grilli, M. Guzzi, A. Bignazzi, F. Bogani, L. Carraresi, M. Colocci, A. Bosacchi, P. Frigeri, and S. Franchi: Thermally activated carrier transfer and luminescence line shape in self-organized InAs quantum dots, Appl. Phys. Lett. 69, 3354 (1996).
- P. Mutti, G. Ghislotti, S. Bertoni, L. Bonoldi, G. F. Cerofolini, L. Meda, E. Grilli, and M. Guzzi: Room-temperature visible luminescence from silicon nanocrystals in silicon implanted SiO2 layers, Appl. Phys. Lett. 66, 851 (1995).
- L. Pavesi and M. Guzzi: Photoluminescence of AlxGa1-xAs alloys, J. Appl. Phys. 75, 4779 (1994).
Teaching
- General Physics
- Semiconductor Physics and Technology
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