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Single molecule power-law behavior on a crystalline surface
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View: Figures


Image of FIG. 1.
FIG. 1.

AFM image and lineout of (0001) after annealing. The step height on each terrace is 0.22 nm.

Image of FIG. 2.
FIG. 2.

Fluorescence trajectory of -PTCDI on (0001). The solid line shows the CPD analysis with three intensity levels (on, off, or dead and shutter closed). Uncertainties in duration and intensity of each period (75 ms and 0.13 counts/25 ms) are comparable to the size of the CPD line.

Image of FIG. 3.
FIG. 3.

(a) On probability density for 51 molecules and (b) off probability density for 25 molecules observed on sapphire (0001).

Image of FIG. 4.
FIG. 4.

On probability density without the last on period in each trajectory, 25 molecules and 42 events.

Image of FIG. 5.
FIG. 5.

Energy level scheme of -PTCDI/ (0001) and proposed kinetic scheme explaining power-law distributed on and off periods. Steps (i)–(iii) see text. VB: valence band. CB: conduction band. VL: vacuum level. , : ground and excited singlet states of -PTCDI. , : ground and excited states of cation. , : polaronic acceptor and donor states. , : rate constants for turning molecule on or off.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Single molecule power-law behavior on a crystalline surface