Structures of compounds used in the study.
(Color online) Schematic presentation of a film containing three layers of clusters and 20 layers of PPV (blue), along with PEI (grey) and PAA (orange).
Optical absorption of , , and .
Optical absorption of samples 0, 1, 2, 3, and 4.
(Color online) Left: AFM image demonstrating the cut on the (sample 0) film, size . Right: the height profile along the arrow direction.
Photoluminescence of samples 0, 1, 2, 3, and 4, excited at .
The PL intensity ratios versus layers. Experimental results are dots, whereas calculation values are vertical lines.
Film composition and thickness estimation results. The results are based on UV-vis absorption ratio (Fig. 4) vs that of 0 estimated via AFM (Fig. 5).
PL intensity ratios calculated based on estimated thickness values. The calculation assumes exciton diffusion length of .
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