Full text loading...
(a) Steady state PL spectra of CdSe/ZnTe QDs in pure films (green solid curve), in hybrid films without (red solid curve) and with Au NPs (blue solid curve); CdSe/ZnS QDs in pure film (black dashed curve), in hybrid film without (red dashed curve) and with Au NPs (blue dashed curve) (b) The band alignment of CdSe/ZnS type I QDs and CdSe/ZnTe type II QDs. The arrows show the FRET process and the relaxation process of carriers in the conduction and valence band.
(a) The absorption spectra of Au NPs (black solid curve) and CdSe/ZnTe QDs (green dashed curve) and the steady state PL spectra of CdSe/ZnS QDs (red solid curve).
Normalized photoluminescence excitation spectra of CdSe/ZnTe QDs in hybrid films (extracted from the peak PL intensity) without and with Au NPs. The inset shows the enhancement factor of the emission intensity of CdSe/ZnTe QDs in hybrid film with Au NPs and the absorption spectra of Au NPs.
(a) Time-resolved PL spectra of type I CdSe/ZnS QDs in pure and hybrid film with Au NPs under pulsed excitation with and without additional laser illumination to excite Au surface plasmons. (b) Time-resolved photoluminescence spectra of type II CdSe/ZnTe QDs in pure and hybrid films without and with Au NPs.
Article metrics loading...