Quantum dot-nanopore array system

This section describes the enhancement of emission efficiency and sensitivity of the QD-nanopore array system before going on to review monotonic sensing and intrinsic PL responses. A final section discusses enhanced sensing stability and the results of core vs. core-shell studies. 

The resulting AAO/QD sample, mechanically supported on a Si support, showed PL enhancement by a factor of 8.4 relative to that of a Si-QD control sample in 350 nm light excitation (curves 3 and 1 in Fig. 9.23). The 

22 AFM images of (a) a blank AAO and (b) QD drop-cast AAO. Reprinted with permission from Appl. Phys. Lett., 97,113105 (2010). Copyright (2010), American Institute of Physics. 

23 PL spectra of CdSe/ZnS QDs cast on Si (curve 1) and cast on AAO placed on Si supports of different surface layers (curve 2 Si with 920 nm SiOj curve 3 Si with 235 nm SiOj, curve 4 Si with 1-2 A native SiOj curve 5 Si with 235 nm SiOj topped by 50 nm Au).The inset is a PL re-comparison using Si supports 3 and 5 at reduced QD excitation intensity. Reprinted with permission from Appl. Phys. Lett., 97,113105 (2010). Copyright (2010), American Institute of Physics. 

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