Flexible organic phototransistors based on a combination of printing methods
| Autor: | Kang-Jun Baeg, Hyun Jun Ha, Hui Jun Yun, Byeong Kwon Ju, Yun-Hi Kim, Minseok Kim, In Kyu You |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
business.industry Bar (music) Nanotechnology General Chemistry Substrate (printing) engineering.material Condensed Matter Physics Electronic Optical and Magnetic Materials Biomaterials Organic semiconductor Semiconductor Coating visual_art Printed electronics Materials Chemistry visual_art.visual_art_medium engineering Offset printing Optoelectronics Field-effect transistor Electrical and Electronic Engineering business |
| Zdroj: | Organic Electronics. 15:2677-2684 |
| ISSN: | 1566-1199 |
| Popis: | Highly photosensitive organic phototransistors (OPTs) are successfully demonstrated on a flexible substrate using all-solution process as well as a combination of printing methods which consist of roll-to-plate reverse offset printing (ROP), inkjet printing and bar coating. Excellent electrical switching characteristics are obtained from heterogeneous interfacial properties of the reverse-offset-printed silver nanoparticle electrode and the inkjet-printed p-channel polymeric semiconductor. In particular, the OPTs exhibit remarkably photosensitivity with a photo-to-dark current ratio exceeding 5 orders. This optoelectronic properties of the combinational printed OPTs are theoretically and experimentally studied, and found the comparable tendency. In addition, excellent mechanical stability is observed with up to 0.5% of strain applied to the OPTs. Hence, by manufactured with a combination of various graphic art printing methods such as roll-to-plate ROP, inkjet printing, and bar coating, these devices are very promising candidates for large-area and low-cost printed and flexible optoelectronics applications. |
| Databáze: | OpenAIRE |
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