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Sensitivity of Signal-to-Noise Ratio to the Layer Profile and Crystal Quality of SiGe/Si Multilayers
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.ORCID iD: 0000-0002-8336-8294
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.ORCID iD: 0000-0002-7510-9639
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2016 (English)In: ECS Journal of Solid State Science and Technology, ISSN 2162-8769, E-ISSN 2162-8777, Vol. 5, 3196-3201 p.Article in journal, Editorial material (Other (popular science, discussion, etc.)) Published
Abstract [en]

This study presents signal-to-noise ratio (SNR) measurements of single crystalline dots or layers of SiGe/Si in multilayer structures in terms of Ge content, interfacial and layer quality. All multilayers were processed in form of mesas and the noise behavior of electrical signal was investigated by comparing the power spectral density curves and K1/f values. The SiGe/Si multilayer structures were also characterized by the conventional material analysis tools and the results were compared to the noise measurements. The quality of SiGe/Si interface or SiGe layer was monitored by intentional exposure to oxygen in range of 2–1600 nTorr either during or prior to SiGe growth. The results demonstrated that SNR was sensitive to the interfacial and layer quality, and the Ge content in a multilayer structure. The noise level became very high when the strain fluctuated within SiGe layer and this occurred for SiGe with high Ge content or SiGe dots.

Place, publisher, year, edition, pages
Electrochemical Society, 2016. Vol. 5, 3196-3201 p.
National Category
Materials Engineering Other Electrical Engineering, Electronic Engineering, Information Engineering
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URN: urn:nbn:se:kth:diva-185459DOI: 10.1149/2.0261604jssISI: 000373212500027OAI: oai:DiVA.org:kth-185459DiVA: diva2:920797
Note

QC 20160823

Available from: 2016-04-19 Created: 2016-04-19 Last updated: 2017-08-16Bibliographically approved

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Salemi, Arash

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