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Photoluminescence lifetime and structure of molecular beam epitaxy porous Si1-xGex grown on Si
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UNSPECIFIED (2000) Photoluminescence lifetime and structure of molecular beam epitaxy porous Si1-xGex grown on Si. In: 1st International Conference on Porous Semiconductors - Science and Technology (PSST 98), MALLORCA, SPAIN, MAR 16-20, 1998. Published in: JOURNAL OF POROUS MATERIALS, 7 (1-3). pp. 143-146. ISSN 1380-2224.
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Abstract
A study is presented of the local structure of intense visible light emitting porous SiGe with an initial Ge fraction of 30 at% grown on boron doped-Si substrates by Solid State Molecular Beam Epitaxy (SS-MBE). Analysis of the Extended X-ray Absorption Fine Structure (EXAFS) of the SS-MBE grown SiGe and their anodized porous counterparts processed under various conditions is used to obtain a better understanding of the visible light-emitting mechanism of porous SiGe. In addition, the photoluminescence decay dynamics of porous SiGe are examined and are found to differ in terms of speed and behaviour from porous Si. We interpret the origin of visible PL of the porous MBE SiGe films by considering the quantum confinement effect, as in the interpretation of PL from porous Si, and the evolution of the SiGe Si like-band structure.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
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Journal or Publication Title: | JOURNAL OF POROUS MATERIALS | ||||
Publisher: | KLUWER ACADEMIC PUBL | ||||
ISSN: | 1380-2224 | ||||
Official Date: | January 2000 | ||||
Dates: |
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Volume: | 7 | ||||
Number: | 1-3 | ||||
Number of Pages: | 4 | ||||
Page Range: | pp. 143-146 | ||||
Publication Status: | Published | ||||
Title of Event: | 1st International Conference on Porous Semiconductors - Science and Technology (PSST 98) | ||||
Location of Event: | MALLORCA, SPAIN | ||||
Date(s) of Event: | MAR 16-20, 1998 |
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