PMID- 32846476 OWN - NLM STAT- MEDLINE DCOM- 20210222 LR - 20210222 IS - 1944-8252 (Electronic) IS - 1944-8244 (Linking) VI - 12 IP - 34 DP - 2020 Aug 26 TI - Highly Stable Artificial Synapse Consisting of Low-Surface Defect van der Waals and Self-Assembled Materials. PG - 38299-38305 LID - 10.1021/acsami.0c07394 [doi] AB - The long-term plasticity of biological synapses was successfully emulated in an artificial synapse fabricated by combining low-surface defect van der Waals (vdW) and self-assembled (SA) materials. The synaptic operation could be achieved by facilitating hole trapping and releasing only via the amine (NH(2)) functional groups in 3-aminopropyltriethoxysilane, which consequently induced a gradual conductance change in the WSe(2) channel. The vdW-SA synaptic device exhibited extremely stable long-term potentiation/depression (LTP/LTD) characteristics; its dynamic range and nonlinearity reproduced near 100 and 3.13/-6.53 (for LTP/LTD) with relative standard deviations (RSDs) below 2%. Furthermore, after conducting training and recognition tasks for the Modified National Institute of Standard and Technology (MNIST) digit patterns, we verified that the maximum recognition rate was 78.3%, and especially, its RSD was as low as 0.32% over several training/recognition cycles. This study provides a background for future research on advanced artificial synapses based on vdW and organic materials. FAU - Oh, Seyong AU - Oh S AD - Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, South Korea. FAU - Jung, Sooyoung AU - Jung S AD - Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, South Korea. FAU - Ali, Muhammad Hasnain AU - Ali MH AD - Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, South Korea. FAU - Kim, Jeong-Hoon AU - Kim JH AD - Electrical and Computer Engineering Department, University of California San Diego, San Diego, California 92093, United States. FAU - Kim, Hyeongjun AU - Kim H AD - Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, South Korea. FAU - Park, Jin-Hong AU - Park JH AUID- ORCID: 0000-0001-8401-6920 AD - Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, South Korea. AD - Sungkyunkwan Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 16419, South Korea. LA - eng PT - Journal Article DEP - 20200812 PL - United States TA - ACS Appl Mater Interfaces JT - ACS applied materials & interfaces JID - 101504991 RN - 0 (Boron Compounds) RN - 0 (Propylamines) RN - 0 (Silanes) RN - 0 (Tungsten Compounds) RN - 2U4T60A6YD (boron nitride) RN - L8S6UBW552 (amino-propyl-triethoxysilane) SB - IM MH - *Artificial Organs MH - Boron Compounds/chemistry MH - Long-Term Potentiation MH - Propylamines/chemistry MH - Silanes/chemistry MH - Synapses/physiology MH - Tungsten Compounds/chemistry OTO - NOTNLM OT - APTES OT - artificial synapses OT - neuromorphic computing OT - pattern recognition OT - vdW materials EDAT- 2020/08/28 06:00 MHDA- 2021/02/23 06:00 CRDT- 2020/08/28 06:00 PHST- 2020/08/28 06:00 [entrez] PHST- 2020/08/28 06:00 [pubmed] PHST- 2021/02/23 06:00 [medline] AID - 10.1021/acsami.0c07394 [doi] PST - ppublish SO - ACS Appl Mater Interfaces. 2020 Aug 26;12(34):38299-38305. doi: 10.1021/acsami.0c07394. Epub 2020 Aug 12.