Exploring the ultrasonic nozzle spray-coating technique for the fabrication of solution-processed organic electronics
| Autor: | Hayeong Jang, Se Hyun Kim, Singu Han, Seolhee Baek, Hwa Sung Lee, Heejeong Jeong |
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| Rok vydání: | 2017 |
| Předmět: |
Conductive polymer
Organic electronics Materials science Nozzle Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Ultrasonic nozzle Spray nozzle Biomaterials Pentacene chemistry.chemical_compound Solution precursor plasma spray chemistry PEDOT:PSS Materials Chemistry Electrical and Electronic Engineering Composite material 0210 nano-technology |
| Zdroj: | Organic Electronics. 49:212-217 |
| ISSN: | 1566-1199 |
| DOI: | 10.1016/j.orgel.2017.06.061 |
| Popis: | The ultrasonic nozzle (US) spray method was investigated for its utility in fabricating organic electrodes composed of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), a standard conductive polymer material used to produce large-area low-cost OFETs. The US spray technique involves generating a solution spray by first passing the solution through a head and nozzle subjected to ultrasonic vibrations that induce atomization. This method is advantageous in that the resulting spray comprises extremely small solution droplets a few micrometers in diameter, unlike the spray produced using conventional air spray methods. The PEDOT:PSS US solution spraying process was optimized by controlling the flow rate of the N 2 carrier gas and the substrate temperature while monitoring the quality of the resulting PEDOT:PSS electrode films. The pentacene field-effect transistors prepared using the US spray method displayed a maximum field-effect mobility of 0.47 cm 2 V −1 s −1 (with an average value of 0.31 cm 2 V −1 s −1 ), 35% better than the mobilities achieved using the conventional air spray method. In addition, the device-to-device reproducibility was improved, as indicated by a decrease in the standard deviation of the mobility values from 30% for the air spray devices to 24% for the US spray devices. These results indicated that the US spray technique is efficient and superior to the conventional air spray method for the development of low-cost large-area organic electronics. |
| Databáze: | OpenAIRE |
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