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Silicon‐based light emitters
Author(s) -
Kittler M.,
Reiche M.,
Arguirov T.,
Seifert W.,
Yu X.
Publication year - 2006
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200564518
Subject(s) - wafer , optoelectronics , materials science , wavelength , common emitter , silicon , radiation , substrate (aquarium) , diode , light emitting diode , misorientation , optics , physics , oceanography , microstructure , grain boundary , metallurgy , geology
A new concept for a Si light emitting diode (LED) capable of emitting efficiently at 1.55 µm or at 1.3 µm, respectively, is proposed. It utilizes radiation from a well‐defined dislocation network created in a reproducible manner by direct Si wafer bonding. The wavelength of the light emitted from the network can be tailored by adjusting the misorientation between the Si wafers. That way dominance of radiation at 1.55 µm (D1 line) or at 1.3 µm (D3 line) was achieved. There are hints that decoration of the dislocations by oxygen enhances the intensity of the D1 radiation. A critical analysis of the light emitter proposed by W. L. Ng et al. [Nature 410 , 192 (2001)] using band‐to‐band emission is given. Its application at the above wavelengths would require a few microns thick SiGe layer on top of the Si substrate. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)