TEM (Transmission Electron Microscope)

Technical Concept
Transmission Electronic Microscopy (TEM) is a powerful tool for materials analysis. The atomic resolution capability offers an express way to enter nano-scale world. It is commonly used to materials investigation on morphological observation, crystallographic study, and elemental identification. The field applications may cover a wide span from semiconductor, ceramics, metals, alloy, polymer, and bio-medical materials.

MA-tek provide professional analysis service with free-courier charge for sample shipping, 365 days around-the-clock service, 2nd day data delivery upon sample arrival. We can fulfill your analytical request with the best quality and help you to speed up R & D schedule with the best logistic support and reasonable pricing.

Our facilities:
  • 3 sets of Philips Tecnai F-20 (Field Emission Gun) TEM
  • HAADF STEM Detector
  • Electron Energy Loss Spectroscopy (EELS) Detector
  • Gatan 925 Double Tilt /Rotation Holder
  • EDX point analysis, line scan, mapping
  • STEM imaging
  • Ion Milling (PIPS)
  • Protection Film coater (C, Al, Pt, SiO2...)


       
HAADF Detector   Electron Energy Loss Spectroscopy (EELS) Detector   Gatan 925 Double Tilt Rotation Holder    


Sample Preperation Tools:

  • Dual beam FIB: FEI Helios 400S, FEI NOVA 600, FEI Quanta 3D FEG
    。Ga+ ion/electron
    。Beam energy up to 30kV
    。Current: pA to nA range
    。Carbon, Al, Pt, SOG
    。Cut Size: Length=20-100um, depth=5~30um
  • Fischione Plasma Cleaner
  • Gatam 691 Precision Ion Polishing System (PIPS)
  • Gatam 600 Ion Miller
  • EzLaze 3 Laser Cutting Systems
  • Sputtering/Evaporation Coater
  • Polishers
     
Helios 400S   Nova   Quanta   Strata FIB 201, 205

     
SBT 910 Polisher   Hitachi Ion Sputter   108 Auto/SE Sputter Coater   Gatam 691 Precision Ion

     
Metaserv 2000 Polisher   Buehler Polisher   Gatam 600 Ion Miller   EzLaze 3 Laser


Capabilities:

  • 32nm and 22nm semiconductor materials and processes analysis
  • TEM Bright Field/Dark Field/High Resolution Image
    。Point Resolution 2.4Å
    。Line Resolution 1.02Å
  • STEM Bright Field/High Angle Annual Dark Field (HAADF) Image, also named as Z-contrast
    resolution is 1.9Å
  • EELS Mapping/Line-scan/Probe Spectrum
    。Large field-of-view Energy-filtered: 20um diagonal
    。Excellent Isochromaticity: max variation < ±1 eV at 200 kV
  • EDX Mapping/Line-scan/Probe Spectrum
    。Beam Size <5nm
  • Nano Beam Diffraction (NBD)
    。Beam Size <5nm, very sharp diffraction spots
  • Selective Area Diffraction (SAD)


Potential applications of this technique have been demonstrated in both academic research and advanced R&D activities in various industries. It includes,
  • High resolution imaging of sub-nano meter features, like atomic images, lattice planes, inter planar spacing.
  • Phase identification of second phase formation, segregation, precipitation, and verification of crystalline/amorphous structures.
  • Diffraction pattern analysis of crystalline phases, DC (Diamond Cubic), BCC (Body-Centered Cubic), FCC (Face-Centered Cubic), HCP (Hexagonal close-packed), and others.
  • Determination of habit index plane of crystalline defects, such as burgers vector of edge/screw dislocations, inclined plane of stacking faults, and twinning planes,
  • Study of defect kinetics, such as dislocation moving velocity, activation energy of dislocation formation, dislocation density of defect network, etc.
  • Novel application of this technique has been shown to be precision analysis of a specific feature down to nano meter sizes. It employs FIB precision cutting onto any targeted locations and makes a cross-sectioning sample right across the pin-point failure site. Combined with EDX analysis, it turns out to be the most powerful technique to do microanalysis in ultimate small area of 5 nm, which is limited by TEM/EDX probe size.
       
Channel defect in SRAM cell   Ultra thin gate oxide, 4.3 Ǻ   Carbon nano tube    

       
Quantum well in GaN LED   0.13um via hole of Cu damascene   Si-Ge epitaxial growth    


Silicide extrusion inspection by HAADF imaging


The comparison of EELS and EDX
EELS
analysis is useful for light elements analysis, such as C, N, O…etc. Nitrogen and Oxygen signals can be distinguished very well.
EDX analysis is more useful for heavy elements analysis, such as W, TA, Hf, Ni, Pt, Si, Au... etc.



       
Zero loss   Oxygen EELS   Nitrogen EELS    

       
HAADF   Silicon EDX   Tungsten EDX    


Contact Windows
Dr. CW Wu
TEL:+886-306116678 ext:3910
Mobile:+886-961-301-663

Mr. YF Ko
TEL:+886-306116678 ext:3678
Mobile:+886-914-200-071
Email:tem@ma-tek.com
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