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Researchers develop low-cost sol'n polymer LEDs, PV cells

Posted: 23 Jul 2013 ?? ?Print Version ?Bookmark and Share

Keywords:polymer LED? solar cell? plasmonic material? polymer-based optoelectronic device?

A team of researchers from Ulsan National Institute of Science and Technology (UNIST), South Korea has reported what they claim as significant improvement in device performance of polymer-based optoelectronic devices (OEDs). According to them, the plasmonic material can be applied to both polymer light-emitting diodes (PLEDs) and polymer solar cells (PSCs) through a simple and cheap process.

The contrary demands of these devices mean that there are few metal nanoparticles that can enhance performance in PLEDs and PSCs at the same time.

Most semiconducting OEDs including photodiodes, solar cells, LEDs and semiconductor lasers, are based on inorganic materials. Examples include gallium nitride for LEDs and silicon for solar cells.

Due to the limited availability of raw materials and the complex processing required to manufacture OEDs based on inorganic materials, the cost of device fabrication is increasing. There is great interest in thin-film OEDs that are made from alternative semiconductors.

Among these materials, organic semiconductors have received much attention for use in next-generation OEDs because of the potential for low-cost and large-area fabrication using solution processing.

Efficient PLEDs and PSCs using surface Plasmon resonance enhancement with CD-Ag NPs

Figure 1: Efficient PLEDs and PSCs using surface Plasmon resonance enhancement with CD-Ag NPs.

Despite extensive efforts to develop new materials and device architectures enhancing the performance of these devices, further improvements in efficiency are needed, before there can be widespread use and commercialisation of these technologies.

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