Magnesium-related luminescence in silicon

Steinman, E. A.; Grimmeiss, H. G.

doi:10.1088/0268-1242/13/3/014

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…The photoluminesence (PL) results presented in this work follow the results of Steinman and Grimmeiss 18 , who proposed that an Mg i -Mg s IBE pair center might be responsible for an NP line observed in PL at 1017 meV. Here we confirm this hypothesis through high resolution PL spectroscopy of 28 Si diffused with natural Mg.…”

supporting

confidence: 90%

Mg-pair isoelectronic bound exciton identified by its isotopic fingerprint in Si28

et al. 2018

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We use the greatly improved optical linewidths provided by highly enriched 28 Si to study a photoluminescence line near 1017 meV previously observed in the luminescence spectrum of natural Si diffused with Mg, and suggested to result from the recombination of an isoelectronic bound exciton localized at a Mg-pair center. In 28 Si this no-phonon line is found to be comprised of five components whose relative intensities closely match the relative abundances of Mg-pairs formed by random combinations of the three stable isotopes of Mg, thus confirming the Mg-pair hypothesis. We further present the results of temperature dependence studies of this center that reveal unusual and as yet unexplained behaviour.

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supporting

confidence: 90%

Mg-pair isoelectronic bound exciton identified by its isotopic fingerprint in Si28

et al. 2018

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“…However, the doping could also be performed in a closed quartz ampoule, see, e.g. [9,10,[32][33][34] The use of the sandwich method enabled the preparation of Si:Mg crystals with a concentration of optically active interstitial centers of Mg, reaching 1.5 Â 10 15 cm À3 . The technology was then applied to investigate energy spectra of Mg centers, including sophisticated methods such as piezoand magneto-optical studies, see refs.…”

Section: Sandwich Method: Technology and Characterization Of Samplesmentioning

confidence: 99%

“…In ref. [34], it was proposed to interpret features in photoluminescence (PL) spectra of Si:Mg as a recombination of excitons localized at the isoelectronic magnesium pairs. The effect of the PL of Si:Mg was recently reexamined.…”

Section: Isoelectronic Mg-mg Pairsmentioning

confidence: 99%

Magnesium‐Related Donors in Silicon: State of the Art

Astrov

Portsel

Shuman

et al. 2022

Physica Status Solidi (a)

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The research interest in deep donors in silicon is due in particular to the quantum structure of such centers; these are promising for application in silicon photonics in the mid-IR range and quantum technologies. At interstitial lattice positions, magnesium atoms create double-charge deep donors. The review is an attempt to summarize the accumulated knowledge on properties of magnesium impurity in silicon. Among methods to obtain magnesium-doped silicon, there is focus on the impurity diffusion from the solid phase using the so-called sandwich method. Techniques to investigate samples include Hall effect measurements, optical absorption, luminescence spectroscopy, and others. The diffusivity of magnesium in silicon and stability of parameters of doped samples under heat treatment is discussed. The energy spectrum of the helium-like magnesium donor is considered in detail. Due to the interaction with other impurities, magnesium forms a variety of donor levels in silicon. These include complexes of Mg with substitutional acceptor atoms B, Al, Ga, In, interstitial Li, and oxygen, as well as numerous donors with a currently unknown nature. Some defects are similar to so-called thermal donors in silicon. The pairing of Mg atoms is proved in samples prepared from the isotope 28 Si-enriched silicon.

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