期刊
ACS MACRO LETTERS
卷 4, 期 3, 页码 322-326出版社
AMER CHEMICAL SOC
DOI: 10.1021/mz500698p
关键词
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资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF-2013R1A1A1011215]
- Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2013M3A6B1078873]
- Research Institute for Solar and Sustainable Energies (RISE)
- GIST-Caltech Research Collaboration Project through GIST
Nonvolatile resistive memory devices based on a new low bandgap donor acceptor (D-A) conjugated polymer, poly((E)-6,6'-bis(2,3-dihydrothieno[3,4-b] [1,4] dioxine-5-y1) -1,1'-bis (2-octyldo decyl)-[3,3'-biindolinyi-dene3-2,2'-dione) (PIDED), which are fabricated and operated in ambient air, are reported. The D-A conjugated polymer is synthesized from 2,3dihydrothieno[3,4-b][1,4]dioxine and isoindigo as an electron donor and an electron acceptor, respectively, using CH-arylation polymerization. The devices show nonvolatile, unipolar resistive switching behaviors with a high on/off current ratio (similar to 10(4)), excellent endurance cycles (>200 cycles), and a long retention time (>10(4) s) in ambient air. These properties remain stable in ambient air over one year, demonstrating that the device performance is significantly unaffected by exposure to air as the isoindigo has strong electron-withdrawing character and the PIDED exhibits a high degree of crystallinity. This study may pave the way for use of practical nonvolatile organic memory devices operating in ambient air.
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