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Proceedings Paper

White electrophosphorescence from semiconducting polymer blends
Author(s): Xiong Gong; Daniel Moses; Alan J. Heeger
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Paper Abstract

White emission from polymer light-emitting diodes (PLEDs) is demonstrated by spin-casting polymer blends from solution containing poly(9,9-dioctylfluorenyl-2.7-diyl) (PFO) and tris (2,5-bis-2'-(9',9'-dihexylfluorene) pyridine) iridium (III), Ir(HFP)3. The white electrophosphorescence PLEDs exhibit luminance of 1.2 x 104 cd/m2 at 17 volts and luminous efficiency of 4.3 cd/A at current density of 5.2 mA/cm2. Because a single semiconducting polymer, PFO, was used as the common host for red, green and blue emission, the color coordinates, the color temperatures and the color rendering indices of the white emission are insensitive to the brightness, applied voltage and applied current density.

Paper Details

Date Published: 10 November 2004
PDF: 7 pages
Proc. SPIE 5519, Organic Light-Emitting Materials and Devices VIII, (10 November 2004); doi: 10.1117/12.559072
Show Author Affiliations
Xiong Gong, Univ. of California/Santa Barbara (United States)
Daniel Moses, Univ. of California/Santa Barbara (United States)
Alan J. Heeger, Univ. of California/Santa Barbara (United States)

Published in SPIE Proceedings Vol. 5519:
Organic Light-Emitting Materials and Devices VIII
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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