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Very-thin-perylene-crystal-based electroluminescent devices
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Microtome slicing method. (a) Embedding. (b) Slicing. (c) Electrode deposition.

Image of FIG. 2.
FIG. 2.

(Color online) Sandwich-type cell, incorporating a very thin perylene crystal. The chemical formula of perylene is also shown.

Image of FIG. 3.
FIG. 3.

(Color) (a) Photograph of EL emission. (b) Response profile of injection current density. (c) Response profile of EL emission. Applied voltage, . The MgAg electrode was biased negatively with respect to the Ag electrode. Measurements were performed at at a pressure of . Cell area was .

Image of FIG. 4.
FIG. 4.

(Color online) Dependence of injection current density on applied voltage and electric field. Measurements were performed at (curve A) or room temperature (curve B). Voltage regions where the EL emission was observed are indicated by double arrows.

Image of FIG. 5.
FIG. 5.

Dependence of EL intensity on injection current density. Measurements were performed at .

Image of FIG. 6.
FIG. 6.

Energy band during device operation. CB and VB denote the conduction and valence bands, respectively. Numerical values in brackets indicate the energy levels of the work functions of the electrodes and those of CB and VB.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Very-thin-perylene-crystal-based electroluminescent devices