Characterization of decay component of resist surface charging on EBM-8000

In our previous work, we reported the static portion of the surface charging on EBM-8000 and compared it with that on EBM-6000. The scope of this paper is to report the analysis of charging decay component on EBM-8000 and compare it with EBM-6000. We confirmed that our fundamental modeling scheme of the charging decay worked well on EBM-8000 as well as on EBM-6000. However, we found totally different charging decay behaviors between EBM-8000 and EBM-6000. To explain the results, we propose a conceptual model of the charging decay phenomena both on EBM-8000 and EBM-6000.