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Sensitized electrophosphorescence of infrared emission diode based on copper phthalocyanine by an ytterbium complex
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10.1063/1.2811953
/content/aip/journal/apl/91/20/10.1063/1.2811953
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/20/10.1063/1.2811953
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The PL spectrum of a polycrystalline powder of Yb–C doped with CuPc which was excited with Nd:YAG laser at room temperature. Since the intense laser line of the Nd:YAG laser overlaps in the spectrum, the spectrum is drawn after the subtraction of the line. (b) The dependence of intensity ratio of the CuPc emission to the emission on the CuPc concentration in Yb–C powder mixed with CuPc. The inset shows the chemical structures of CuPc and Yb–C.

Image of FIG. 2.
FIG. 2.

(a) The EL spectra of OLED device III (upper spectrum) and device-CBP (lower spectrum). The spectrum of device-CBP is enlarged by 25 times. (b) The normalized EL spectra of OLED device I with an Yb–C EML (left) and device II with a CuPc EML (right).

Image of FIG. 3.
FIG. 3.

Proposed energy level diagrams of (a) device II without Yb–C layer and (b) device III with Yb–C layer.

Image of FIG. 4.
FIG. 4.

Schematic energy transfer processes from Yb–C to CuPc, including the electronic transition responsible for the emission of Yb–C and transition responsible for the CuPc emission. The left figure shows the excitation and the intramolecular energy transfer processes in the Yb–C.

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/content/aip/journal/apl/91/20/10.1063/1.2811953
2007-11-14
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Sensitized electrophosphorescence of infrared emission diode based on copper phthalocyanine by an ytterbium complex
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/20/10.1063/1.2811953
10.1063/1.2811953
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