There is a recent, renewed attention on the possible development of optical emitters compatible with silicon microelectronic technology and it has been recently shown that light emitting diodes could be manufactured on dislocated silicon, where dislocations were generated by plastic deformation or ion implantation. Among other potential sources of room temperature light emission, compatible with standard silicon-based ULSI technology, we have studied old thermal donors (OTD), as the origin of their luminescence is still matter of controversy and demands further investigation.
In this work we discuss the results of a spectroscopical study of OTD using photoluminescence (PL) and Deep Level Transient Spectroscopy (DLTS) on standard Czochralsky (Cz) silicon samples and on carbon-doped samples.
We were able to show that their main optical activity, which consists of a narrow band at 0.767 eV ( P line), is correlated to a transition from a shallow donor level of OTD to a deep level at EV+0.37 eV which is tentatively associated to C-O complexes. As we have shown that the P line emission persists at room temperature, we discuss about its potentialities to silicon in optoelectronic applications.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
R.C. Newman, J.Phys.: Condens. Matter 12, R335 (2000)
W. Kürner, R. Sauer, A. Dornen, K. Thonke, Phys. Rev. B 39, 13327 (1989)
S. Pizzini, M. Guzzi, E. Grilli, G. Borionetti, J.Phys.: Condens. Matter 12, 10131 (2000)
A. Castaldini, D. Cavalcoli, A. Cavallini, Appl. Phys. A71, 305 (2000)
J. Weber, R. Sauer, MRS Symp. Proc. 14, 165 (1983)
B.J. Heijmink Liesert, T. Gregorkiewicz, C.A.J. Ammerlaan, Phys.Rev. B 46(4), 2034 (1992)
G. Davies Physics Reports 176, 83 (1989)
J.Y. Huh, U. Gösele, T.Y. Tan, J. Appl. Phys. 78, 5926 (1995)
S. Binetti, S. Pizzini, E. Leoni, R. Somaschini, J. Appl. Phys. submitted (November 2001)
J. Weber, H.J. Queisser, MRS Symp. Proc. 59, 147 (1986)
About this article
Cite this article
Pizzini, S., Binetti, S., Leoni, E. et al. Radiative recombination processes of thermal donors in silicon. MRS Online Proceedings Library 692, 6301 (2001). https://doi.org/10.1557/PROC-692-H6.30.1