Nanostructure Control of Polymer Semiconductors using Intensely Pulsed White Light for Highly Efficient Production of Organic Electronic Devices
- Nanostructure Control of Polymer Semiconductors using Intensely Pulsed White Light for Highly Efficient Production of Organic Electronic Devices
- 양희연; 박한울; 홍재민; 김도환; 임정아
- intensely pulsed white light; organic thin-film transistors; polymer solar cells
- Issue Date
- European Materials Research Society 2014 Fall meeting
- Polymer semiconductors have emerged as excellent candidates for potential applications in flexible electronic devices such as polymer solar cells (PSCs), organic thin-film transistors (OTFTs) and organic light emitting diodes (OLEDs) due to their low cost, flexibility and light-weight. To date, thermal annealing has been widely used as post treatment to control the nanostructure of crystalline polymer. In particular, electrical properties of PSCs are directly dictated by the molecular orientation and crystalline structure. To improve the nanostructure of PSCs, post treatments such as thermal annealing and solvent vapor annealing commonly have been employed. However, these methods are not suitable for low-cost mass production of organic devices. Here, we demonstrated an ultra-fast, large area, environmental friendly and roll-to-roll production compatible process to reorganize the nanomorphology of bulk heterojunction polymer light absorption layer and crystallize the liquid crystalline semiconductor polymer using intensely pulsed white light (IPWL) for flexible electronics including PSCs and OTFTs. The proposed IPWL treatment has substantial advantages: short processing times on the order of milliseconds and surface-selectivity that does not damage flexible substrates.
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