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- W2328545421 abstract "High throughput spatial atomic layer deposition (ALD) often uses higher reactor pressure than typical batch processes, but the specific effects of pressure on species transport and reaction rates are not fully understood. For aluminum oxide (Al2O3) ALD, water or ozone can be used as oxygen sources, but how reaction pressure influences deposition using ozone has not previously been reported. This work describes the effect of deposition pressure, between ∼2 and 760 Torr, on ALD Al2O3 using TMA and ozone. Similar to reports for pressure dependence during TMA/water ALD, surface reaction saturation studies show self-limiting growth at low and high pressure across a reasonable temperature range. Higher pressure tends to increase the growth per cycle, especially at lower gas velocities and temperatures. However, growth saturation at high pressure requires longer O3 dose times per cycle. Results are consistent with a model of ozone decomposition kinetics versus pressure and temperature. Quartz crystal microbalance (QCM) results confirm the trends in growth rate and indicate that the surface reaction mechanisms for Al2O3 growth using ozone are similar under low and high total pressure, including expected trends in the reaction mechanism at different temperatures." @default.
- W2328545421 created "2016-06-24" @default.
- W2328545421 creator A5023216410 @default.
- W2328545421 creator A5024328104 @default.
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- W2328545421 date "2014-03-25" @default.
- W2328545421 modified "2023-09-24" @default.
- W2328545421 title "Atmospheric Pressure Atomic Layer Deposition of Al<sub>2</sub>O<sub>3</sub> Using Trimethyl Aluminum and Ozone" @default.
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- W2328545421 doi "https://doi.org/10.1021/la500796r" @default.
- W2328545421 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24617608" @default.
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