All-polymer bistable resistive memory device based on nanoscale phase-separated PCBM-ferroelectric blends
Type
ArticleKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionCore Labs
Electrical Engineering Program
Functional Nanomaterials and Devices Research Group
Imaging and Characterization Core Lab
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2012-11-21Online Publication Date
2012-11-21Print Publication Date
2013-05-06Permanent link to this record
http://hdl.handle.net/10754/562420
Metadata
Show full item recordAbstract
All polymer nonvolatile bistable memory devices are fabricated from blends of ferroelectric poly(vinylidenefluoride-trifluoroethylene (P(VDF-TrFE)) and n-type semiconducting [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). The nanoscale phase separated films consist of PCBM domains that extend from bottom to top electrode, surrounded by a ferroelectric P(VDF-TrFE) matrix. Highly conducting poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) polymer electrodes are used to engineer band offsets at the interfaces. The devices display resistive switching behavior due to modulation of this injection barrier. With careful optimization of the solvent and processing conditions, it is possible to spin cast very smooth blend films (Rrms ≈ 7.94 nm) and with good reproducibility. The devices exhibit high Ion/I off ratios (≈3 × 103), low read voltages (≈5 V), excellent dielectric response at high frequencies (Ïμr ≈ 8.3 at 1 MHz), and excellent retention characteristics up to 10 000 s. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Citation
Khan, M. A., Bhansali, U. S., Cha, D., & Alshareef, H. N. (2012). All-Polymer Bistable Resistive Memory Device Based on Nanoscale Phase-Separated PCBM-Ferroelectric Blends. Advanced Functional Materials, 23(17), 2145–2152. doi:10.1002/adfm.201202724Sponsors
The authors acknowledge the generous financial support from the KAUST baseline fund and Saudi Basic Industries (SABIC) Grant No. 2000000015. The authors also acknowledge Mrs. Supriya Chewle for her help with artistic rendering of the images.Publisher
WileyJournal
Advanced Functional Materialsae974a485f413a2113503eed53cd6c53
10.1002/adfm.201202724