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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...)

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| HAADF Detector |
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Electron Energy Loss Spectroscopy (EELS) Detector |
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Gatan 925 Double Tilt Rotation Holder |
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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
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| Helios 400S |
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Nova |
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Quanta |
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Strata FIB 201, 205 |
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| SBT 910 Polisher |
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Hitachi Ion Sputter |
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108 Auto/SE Sputter Coater |
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Gatam 691 Precision Ion |
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| Metaserv 2000 Polisher |
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Buehler Polisher |
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Gatam 600 Ion Miller |
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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.
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| Channel defect in SRAM cell |
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Ultra thin gate oxide, 4.3 Ǻ |
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Carbon nano tube |
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| Quantum well in GaN LED |
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0.13um via hole of Cu damascene |
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Si-Ge epitaxial growth |
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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.

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| Zero loss |
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Oxygen EELS |
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Nitrogen EELS |
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| HAADF |
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Silicon EDX |
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Tungsten EDX |
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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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