Specific Process Knowledge/Thin film deposition/Deposition of Zinc: Difference between revisions
| Line 28: | Line 28: | ||
===Lessons for future thermal deposition of Zn (by Rebecca Ettlinger) === | ===Lessons for future thermal deposition of Zn (by Rebecca Ettlinger) === | ||
*It is better to use a crucible rather than a W boat to heat small Zn pellets, as the pellets sometimes jumped out of the boat when they got hot. | *It is better to use a crucible rather than a W boat to heat small Zn pellets, as the pellets sometimes jumped out of the boat when they got hot. | ||
* | *Consider using manual mode as the power level for evaporation was not always consistent and the rate was not constant even at a constant power level. See further below, however. | ||
*We needed about 12-13 % power on the Lesker Nano36 Thermal evaporator to get Zn evaporation. It is best to soak for a long time(e.g., ramping and soaking for more than 5-8 minutes). | *We needed about 12-13 % power on the Lesker Nano36 Thermal evaporator to get Zn evaporation. It is best to soak for a long time(e.g., ramping and soaking for more than 5-8 minutes). | ||
*The thickness /rate measurement may not have been accurate as the crystal monitor looked irregularly coated after the deposition. | *The thickness /rate measurement may not have been accurate as the crystal monitor looked irregularly coated after the deposition. | ||