Electrical bistability

Charge transfer complexes have also been investigated as the most attractive candidate materials for high-density electrical data storage.76,77 For instance, sil-ver-tetracyanoquinodimethane (Ag-TCNQ) and copper-tetracyanoquinodimethane (Cu-TCNQ) have been studied for data recording since they exhibit electrical bistability. 

L.P. Ma, J. Liu and Yang, Y. (2002) Organic electrical bistable devices and rewritable memory cells Appl Phys. Lett. 80 2997. 

Y.-C. Lai, K. Ohshimizu, W.-Y. Lee, J.-C. Hsu, T. Higashihara, M. Ueda, W.-C. Chen, Electrically Bistable Memory Devices Based on All-Conjugated Block Copolythiophenes and Their PCBM Composite Films. J. Mater. Chem. 2011,21,14502. 

H.-J. Yen, H. Tsai, C.-Y. Kuo, W. Nie, A. D. Mohite, G. Gupta, J. Wang, J.-H. Wu, G.-S. Liou, H.-L. Wang, Flexible Memory Devices with Tunable Electrical Bistability via Controlled Energetics in Donor-Donor and Donor-Acceptor Conjugated Polymers. /. Mater. Chem. C 2014,2,4374. 

FIGURE 7.38 I-V characteristics of the electrical bistable memory device based on a Au-polyaniline nanocomposite. (Reproduced from Tseng, R.J., Huang, J.X., Ouyang, J., Kaner, R.B., and Yang. Y, Nano. Lett., 5, 1077-1080, 2005. With permission.)... 

Ma, L.P., S. Pyo, J. Ouyang, Q.F. Xu, and Y. Yang. 2003. Nonvolatile electrical bistability of organic/metal-nanocluster/organic system. Appl Phys Lett 82 (9) 1419—1421. 

Electrical Bistable Polymer Eilms and Their Applications in Memory Devices.8-1... 

Electrical bistability can also be found in all-organic systems possessing both an electron donor and acceptor. In these systems, the electronic switching mechanism is attributed to an electric field-induced charge transfer between conjugated organic compounds, in fact this system presents one of the most... 

By exploiting the advantages of nanocomposite materials, further progress in the development of polymer electronic memory devices can be made. As discussed above, the electrical bistability is related to the electric field-induced charge transfer between two components. Thus, the compatibility of these two components is crucial for optimal device performance. Enhancing the interface between the two components could lead to superior device performance, so that to this purpose a nanocomposite of polyaniline nanofiber-Au nanoparticle is used as the active material. 

Electrical bistability is indeed observed in the nanocomposite film verifying that the nonvolatile memory effect is present even at nanoscale dimensions. This observation will continue to drive researchers towards developing future organic memory devices. 

Electrical Bistable Polymer Films and Their Apphcations in Memory Devices... 

---