Light-responsive spiropyran based polymer thin films for use in organic field-effect transistor memories
SCIE
SCOPUS
- Title
- Light-responsive spiropyran based polymer thin films for use in organic field-effect transistor memories
- Authors
- Yong Jin Jeong; Eun Joo Yoo; Lae Ho Kim; Seonuk Park; Jaeyoung Jang; Se Hyun Kim; Seung Woo Lee; Park, CE
- Date Issued
- 2016-06
- Publisher
- Royal Society of Chemistry
- Abstract
- Light-responsive spirotype compounds have been receiving attention as attractive smart materials because of their various potential applications in organic optoelectronic devices, based on organic field-effect transistors (OFETs). However, it still remains a challenge to apply the organic flash memory devices using spirotype compounds due to the relatively poor development of new photosensitive electret materials. Here, we report the synthesis of a novel photosensitive polymer electret material, spiropyran, containing poly(3,5-benzoic acid hexafluoroisopropylidene diphthalimide) (6FDA-DBA-SP), and the development of light-responsive flexible memory devices using the 6FDA-DBA-SP electret layer. The charge trapping properties of 6FDA-DBA-SP under light illumination were enhanced by the electron withdrawing properties and lowering energetic barrier of charge trapping between 6FDA-DBA-SP and pentacene analysed by measuring the electronic structures at the pentacene/6FDA-DBA-SP interfaces. The resulting OFETs showed enlarged hysteresis under white-light illumination and exhibited bi-stable current states after the light-assisted programing and erasing processes, and they were utilized in non-volatile flexible memory device applications.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/37746
- DOI
- 10.1039/C6TC00798H
- ISSN
- 2050-7526
- Article Type
- Article
- Citation
- Journal of Materials Chemistry C, vol. 4, no. 23, page. 5398 - 5406, 2016-06
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