Specific Process Knowledge/Lithography/Coaters/Spin Coater: RCD8 processing: Difference between revisions
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The acceleration to the spin-off speed also influences the thickness, but the effect is dependent on previous steps. The spin-off is usually a simple spin at one speed, but it may be comprised of several steps at different spin speeds. After spin-off, the wafer is decelerated. | The acceleration to the spin-off speed also influences the thickness, but the effect is dependent on previous steps. The spin-off is usually a simple spin at one speed, but it may be comprised of several steps at different spin speeds. After spin-off, the wafer is decelerated. | ||
= | =Dispense= | ||
The dispensed volume may be estimated by measuring the distance the resist level is displaced during a dispense, and calculating the corresponding volume using the diameter of the syringe (23 mm). A displacement of 10 mm corresponds to a dispensed volume of 4 mL. | |||
<!-- Text below was in the original section "Automatic dispense" TARAN 27-08-2025 | |||
Automatic dispense on the Spin Coater: RCD8 is done using a Nordson EFD Performus VII pressurised cartridge dispense system. The syringe containing the resist is mounted on the media arm, and the resist is dispensed using a nitrogen pressure supplied by the control box. The dispense rate is controlled by the nitrogen pressure, while the dispense time, and thus the volume, is set in the recipe. The dispensed volume may be estimated by measuring the distance the resist level is displaced during a dispense, and calculating the corresponding volume using the diameter of the syringe (23 mm). A displacement of 10 mm corresponds to a dispensed volume of 4 mL. | Automatic dispense on the Spin Coater: RCD8 is done using a Nordson EFD Performus VII pressurised cartridge dispense system. The syringe containing the resist is mounted on the media arm, and the resist is dispensed using a nitrogen pressure supplied by the control box. The dispense rate is controlled by the nitrogen pressure, while the dispense time, and thus the volume, is set in the recipe. The dispensed volume may be estimated by measuring the distance the resist level is displaced during a dispense, and calculating the corresponding volume using the diameter of the syringe (23 mm). A displacement of 10 mm corresponds to a dispensed volume of 4 mL. | ||
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*'''Grey (0.047"):''' | *'''Grey (0.047"):''' | ||
**~2.5 ml/s @ 0.1 bar | **~2.5 ml/s @ 0.1 bar | ||
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=Recipes= | =Recipes= | ||