deposition_processes_and_rates
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A note about deposition
The sputtering of thin films has some advantages over vapor deposition:
- Sputtered films adhere more strongly to substrates than vapor deposited films, due to the high kinetic energies with which the atoms impinge upon the substrate (1-100 eV for sputtering, 0.1-0.5 eV for evaporation).
- Sputtered films are typically denser and more uniform.
- The sputtering process is more versatile. The target may be composed of alloys or composite materials in addition to pure metals. Furthermore, reactive sputtering is a well established technique for creating compound materials such as NbTiN.
- Both conductive (metals, alloys) and nonconductive (dielectrics, insulators) films may be deposited. (Although
- The process may be used in a reverse mode just to clean the surface of the substrates prior to sputtering.
- Sputtering is isotropic, thus covering step-edges, whereas vapor deposition is line-of-sight, enabling techniques such as shadow evaporation.
Calibrations
The calibrations can be found on the page of each deposition system. It is crucial to include all relevant information about the process.
A calibration should always include:
- Date of sample fabrication
- Sample ID to find sample in system logbook
- Process parameters (pressure, current, voltage, deposition time, xtal thickness etc.)
- Measurement method (X-ray, RBS, AFM etc.)
- Measurement result
- Rate (nm/s or nm/A)
deposition_processes_and_rates.1737033289.txt.gz · Last modified: 2025/01/16 13:14 by wigbout