Figure 5

Reflectivity spectra of APTES- and APDMES-modified PSi microcavities before and after exposure to NH ₃ /MeOH dry and ammonia. (A) Reflectivity spectra of APTES-modified PSi microcavity before (solid line) and after (red dashed line) exposure to NH₃/MeOH dry solution at RT. (B) Reflectivity spectra of APDMES-modified PSi microcavity before (solid line) and after (red dashed line) exposure to ammonia solution at RT.