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← ScienceWhich risk increases during plasma etching when substrate temperature rises?
A)Polymerization reaction on chamber walls
B)Increased etching of mask material✓
C)Reduced ion density within sheath
D)Desorption of reaction product species
💡 Explanation
Increased substrate temperature enhances kinetics therefore the etching of mask material accelerates, because activated chemical reactions proceed more rapidly. This mechanism is Arrhenius rate dependence, rather than deposition and chamber wall polymerization, which become prominent at cooler temperatures.
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