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Charge carrier transport in an emissive layer of green electrophosphorescent devices
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10.1063/1.1813628
/content/aip/journal/apl/85/18/10.1063/1.1813628
http://aip.metastore.ingenta.com/content/aip/journal/apl/85/18/10.1063/1.1813628
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Optical absorption spectra of CBP, , and doped CBP thin films. The insets show the chemical structures of and CBP.

Image of FIG. 2.
FIG. 2.

Electron TOF transients in doped CBP thin films at three different concentrations ((a) 0%, (b) 3.5%, and (c) 7% of ) at . Insets show the double logarithmic plots of the TOF transients. The transit times are marked by the arrows. Hole TOF transient in CBP thin film is also shown in (a) as a dotted line.

Image of FIG. 3.
FIG. 3.

Schematic energy level diagrams of charge carrier generation and transport for electron (a) and hole (b). (1) CBP are photoexcited by a laser pulse, (2) excitation energy transfer from CBP to , (3) electron injection from LUMO of to that of CBP, (4) electron transport through LUMO of CBP with shallow trapping at sites, (5) hole injection from HOMO of to that of CBP, and (6) direct hopping of holes between sites.

Image of FIG. 4.
FIG. 4.

concentration dependence of and of electron drift mobilities in doped CBP thin films. The values of and of hole drift mobility of CBP thin films are also shown for reference.

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/content/aip/journal/apl/85/18/10.1063/1.1813628
2004-11-03
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Charge carrier transport in an emissive layer of green electrophosphorescent devices
http://aip.metastore.ingenta.com/content/aip/journal/apl/85/18/10.1063/1.1813628
10.1063/1.1813628
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