期刊
CHINESE PHYSICS B
卷 27, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/27/8/087701
关键词
transparent resistive random access memory (TRRAM); HfO(x )inserting layer; uniformity; forming-free
资金
- National Key Research and Development Program of China [2017yfb0405600]
- National Natural Science Foundation of China [61404091, 61274113, 61505144, 51502203, 51502204]
- Natural Science Foundation of Tianjin City [17JCYBJC16100, 17JCZDJC31700]
The impacts of HfOx inserting layer thickness on the electrical properties of the ZnO-based transparent resistance random access memory (TRRAM) device were investigated in this paper. The bipolar resistive switching behavior of a single ZnO film and bilayer HfOx/ZnO films as active layers for TRRAM devices was demonstrated. It was revealed that the bilayer TRRAM device with a 10-nm HfOx inserted layer had a more stable resistive switching behavior than other devices including the single layer device, as well as being forming free, and the transmittance was more than 80% in the visible region. For the HfOx/ZnO devices, the current conduction behavior was dominated by the space-charge-limited current mechanism in the low resistive state (LRS) and Schottky emission in the high resistive state (HRS), while the mechanism for single layer devices was controlled by ohmic conduction in the LRS and Poole-Frenkel emission in the HRS.
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