Excitation selectivity in model tin-oxo resist: a computational chemistry perspective

In this preliminary computational chemistry study, we report excitation selectivity in a model tin-oxo molecular resist. Upon impact ionization, organic side chains connected to 6-coordinated tin atoms (located near the charge balancing ligands) are preferentially destabilized. Upon electron addition, conversely, side chains connected to 5-coordinated tin atoms (located on the central belt) are destabilized. Inferring from the binding energies, the ionization induced processes likely have a smaller spatial extent than electron attachment induced process.

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