Angle Performance on Optima XE
- Axcelis Technologies, Inc., 108 Cherry Hill Dr, Beverly, MA 01915 (United States)
Angle control on high energy implanters is important due to shrinking device dimensions, and sensitivity to channeling at high beam energies. On Optima XE, beam-to-wafer angles are controlled in both the horizontal and vertical directions. In the horizontal direction, the beam angle is measured through a series of narrow slits, and any angle adjustment is made by steering the beam with the corrector magnet. In the vertical direction, the beam angle is measured through a high aspect ratio mask, and any angle adjustment is made by slightly tilting the wafer platen during implant.Using a sensitive channeling condition, we were able to quantify the angle repeatability of Optima XE. By quantifying the sheet resistance sensitivity to both horizontal and vertical angle variation, the total angle variation was calculated as 0.04 deg. (1{sigma}). Implants were run over a five week period, with all of the wafers selected from a single boule, in order to control for any crystal cut variation.
- OSTI ID:
- 21510115
- Journal Information:
- AIP Conference Proceedings, Vol. 1321, Issue 1; Conference: IIT 2010: 18. international conference on ion implantation technology, Kyoto (Japan), 6-11 Jun 2010; Other Information: DOI: 10.1063/1.3548423; (c) 2010 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Angle Control on the Optima HE/XE Ion Implanter
Implant Angle Monitor System of MC3-II