Two in one solution for low cost polymer LEDs and solar cells
http://www.unist.ac.kr/board/view.sko?menuCd=AB07002001000&boardId=Notice&dataSid=1858567[font face=Serif][font size=5]Two in one solution for low cost polymer LEDs and solar cells[/font]
Eunhee Song | 2013/07/22
[font size=4]Affordable, simple yet high-performance PLEDs and PSCs are here soon.[/font]
[font size=3]Considerable improvement in device performance of polymer-based optoelectronic devices is reported today by researchers from Ulsan National Institute of Science and Technology (UNIST), South Korea. The new plasmonic material, can be applied to both polymer light-emitting diodes (PLEDs) and polymer solar cells (PSCs), with world-record high performance, through a simple and cheap process.
The team demonstrated efficient PLEDs and PSCs using surface Plasmon resonance enhancement with CD-Ag NPs. The PLEDs achieved a remarkably high current efficiency (from 11.65 to 27.16 cd A-1) and luminous efficiency (LE) (from 6.33 to 18.54 lm W-1).
PSCs produced in this way showed enhanced power conversion efficiency (PCE) (from 7.53 to 8.31%) and internal quantum efficiency (IQE) (from 91 to 99% at 460 nm). The LE (18.54 lm W-1) and IQE (99%) are among the highest values reported to date in fluorescent PLEDs and PSCs, respectively.
These significant improvements in device efficiency demonstrate that surface Plasmon resonance materials constitute a versatile and effective route for achieving high performance polymer LEDs and polymer solar cells, said Prof. Jin Young Kim. This approach shows promise as a route for the realization of electrically driven polymer lasers.
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http://dx.doi.org/10.1038/nphoton.2013.181