XPS metrology for process control in selective deposition
US11346795B2 · kind B2 · utility
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Key dates
| Filing date | Oct 9, 2020 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Oct 9, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L21/67253
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
XPS spectra are used to analyze and monitor various steps in the selective deposition process. A goodness of passivation value is derived to analyze and quantify the quality of the passivation step. A selectivity figure of merit value is derived to analyze and quantify the selectivity of the deposition process, especially for selective deposition in the presence of passivation. A ratio of the selectivity figure of merit to maximum selectivity value can also be used to characterize and monitor the deposition process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.