Characterization of SiGe/Si multi-quantum wells for infrared sensing
2013 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 103, no 25, 251609- p.Article in journal (Refereed) Published
SiGe epitaxial layers are integrated as an active part in thermal detectors. To improve their performance, deeper understanding of design parameters, such as thickness, well periodicity, quality, and strain amount, of the layers/interfaces is required. Oxygen (2-2500 × 10-9 Torr) was exposed prior or during epitaxy of SiGe/Si multilayers. In this range, samples with 10 nTorr oxygen were processed to investigate layer quality and noise measurements. Temperature coefficient of resistance was also measured to evaluate the thermal response. These results demonstrate sensitivity of SiGe-based devices to size and location of defects in the structure.
Place, publisher, year, edition, pages
2013. Vol. 103, no 25, 251609- p.
Thin-Films, Temperature, Bolometers, Pressure, Epitaxy
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-140927DOI: 10.1063/1.4855595ISI: 000329973800025ScopusID: 2-s2.0-84891448173OAI: oai:DiVA.org:kth-140927DiVA: diva2:693437
FunderEU, European Research Council
QC 201402042014-02-042014-02-042015-02-11Bibliographically approved