0000000000856791

AUTHOR

Martin Eickhoff

showing 2 related works from this author

SnO2 : Sb - A new material for high-temperature MEMS heater applications: Performance and limitations

2007

MEMS micro heater devices capable of long-term operation at temperatures up to 1000 degrees C are presented. The enhanced long-term stability has been achieved by employing antimony-doped tin oxide (SnO2:Sb) as a substitute for the conventionally used noble metal heater resistors. A detailed investigation of its high-temperature stability reveals that degradation is caused by out-diffusion of Sb impurities from the SnO2 film. (c) 2007 Elsevier B.V. All rights reserved.

Materials scienceFABRICATIONengineering.materialFILMSlaw.inventionlawImpurityMaterials ChemistryElectrical and Electronic EngineeringSILICONInstrumentationMicroelectromechanical systemsbusiness.industryMetals and AlloysCondensed Matter PhysicsTin oxideSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsMETALengineeringOptoelectronicsDegradation (geology)Noble metalResistorbusinessGAS SENSORS
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Strain effects and phonon-plasmon coupled modes in Si-doped AlN

2009

The E 2h and A 1 (LO) phonon modes of AlN films grown on sapphire are analyzed by Raman scattering as a function of silicon doping for concentrations covering from 5.5 x 10 19 cm ―3 to 5.2 x 10 21 cm ―3 . For high doping levels the appearance of a mode around 520 cm ―1 indicates the precipitation of crystalline silicon in the samples and its inhomogeneous incorporation to the AlN layer. The frequency of this mode shifts to lower energies with doping, indicating that the silicon crystals are embedded in the AlN lattice and under tensile strain. On the other hand, the AlN phonon modes are blue-shifted due to the compressive strain as a result of the silicon incorporation. This strain is parti…

Materials scienceCondensed matter physicsSiliconPhononDopingAnalytical chemistrychemistry.chemical_elementSurfaces and InterfacesCondensed Matter PhysicsSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsBlueshiftsymbols.namesakechemistryMaterials ChemistrysymbolsSapphireCrystalline siliconElectrical and Electronic EngineeringRaman spectroscopyRaman scatteringphysica status solidi (a)
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