Silicon-germanium nanostructures for light emitters and on-chip optical interconnects

Document Type

Article

Publication Date

1-1-2009

Abstract

In this paper, we review the present status of light emitters based on SiGe nanostructures. In order to be commercially valuable, these light emitters should be efficient, fast, operational at room temperature, and, perhaps most important, compatible with the "mainstream" complementary metal-oxide-semiconductor (CMOS) technology. Another important requirement is in the emission wavelength, which should match the optical waveguide low-loss spectral region, i.e., 1.3-1.6 μm. Among other approaches, epitaxially grown Si/SiGe quantum wells and quantum dot/quantum well complexes produce efficient photoluminescence and electroluminescence in the required spectral range. Until recently, the major roadblocks for practical applications of these devices were strong thermal quenching of the luminescence quantum efficiency and a long carrier radiative lifetime. The latest progress in the understanding of physics of carrier recombination in Si/SiGe nanostructures is reviewed, and a new route toward CMOS compatible light emitters for on-chip optical interconnects is proposed. ©2009 IEEE.

Identifier

67449136398 (Scopus)

Publication Title

Proceedings of the IEEE

External Full Text Location

https://doi.org/10.1109/JPROC.2009.2020711

ISSN

00189219

First Page

1284

Last Page

1303

Issue

7

Volume

97

Fund Ref

National Science Foundation

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