Forming-Free Tunable Analog Switching in WOx/TaOx Heterojunction for Emulating Electronic Synapses
In this work, the sputtered deposited WOx/TaOx switching layer has been studied for resistive random-access memory (RRAM) devices. Gradual SET and RESET behaviors with reliable device-to-device variability were obtained with DC voltage sweep cycling without an electroforming process. The memristor s...
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| Veröffentlicht in: | Materials 2022-12, Vol.15 (24), p.8858 |
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| creator | Mahata, Chandreswar Pyo, Juyeong Jeon, Beomki Ismail, Muhammad Kang, Myounggon Kim, Sungjun |
| description | In this work, the sputtered deposited WOx/TaOx switching layer has been studied for resistive random-access memory (RRAM) devices. Gradual SET and RESET behaviors with reliable device-to-device variability were obtained with DC voltage sweep cycling without an electroforming process. The memristor shows uniform switching characteristics, low switching voltages, and a high RON/ROFF ratio (~102). The transition from short-term plasticity (STP) to long-term potentiation (LTP) can be observed by increasing the pulse amplitude and number. Spike-rate-dependent plasticity (SRDP) and paired-pulse facilitation (PPF) learning processes were successfully emulated by sequential pulse trains. By reducing the pulse interval, the synaptic weight change increases due to the residual oxygen vacancy near the conductive filaments (CFs). This work explores mimicking the biological synaptic behavior and further development for next-generation neuromorphic applications. |
| doi_str_mv | 10.3390/ma15248858 |
| format | Article |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central Open Access; MDPI - Multidisciplinary Digital Publishing Institute; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Electric fields Electrodes Electroforming Filaments Heterojunctions Memory devices Memristors Metal oxides Plastic properties Pulse amplitude Random access memory Switching Synapses |
| title | Forming-Free Tunable Analog Switching in WOx/TaOx Heterojunction for Emulating Electronic Synapses |
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