1. Bistable electrical switching and nonvolatile memory effect in mixed composite of oxadiazole acceptor and carbazole donor.
- Author
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Sun, Yanmei, Li, Lei, Wen, Dianzhong, and bai, Xuduo
- Subjects
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ELECTRIC switchgear , *BISTABLE devices , *NONVOLATILE memory , *OXADIAZOLES , *CARBAZOLE - Abstract
Bistable electrical switching and nonvolatile memory devices with the configuration of indium tin oxide (ITO)/active layer/aluminum (Al) are reported. The active layer were prepared from the mixed compositions of 2-(4-tert-butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole, (PBD) and poly( N -vinylcarbazole) (PVK). The as-fabricated ITO/PBD:PVK/Al sandwiched devices exhibited rewriteable flash memory property. Due to the strong interaction between oxadiazole acceptor and carbazole donor, the devices demonstrate excellent performance. The memory devices can operate over a small voltage range, the absolute value of switching-on threshold voltage is less than 1 V and the switching-off threshold voltage is less than 3.5 V. The ON/OFF ratio of current switches in the range of 10 4 –10 2 during the variation of applied voltage and the two different resistance states can be maintained over 4 h. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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