Two‐Terminal MoS2‐Based Retinomorphic Devices with Enhanced Synaptic Plasticity
Abstract Neuromorphic visual systems mimicking biological retina functionalities are emerging as next‐generation retinomorphic devices for consolidating sensing and memorizing systems. In particular, monolayer MoS2 has been proposed as a promising material for retinomorphic devices due to their uniq...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-07-01
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| Series: | Advanced Electronic Materials |
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| Online Access: | https://doi.org/10.1002/aelm.202400878 |
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| author | Younghoon Lim Taehun Kim Jaesik Eom Onsik Harm Junsung Byeon Jungmoon Lim Juwon Lee Sangyeon Pak SeungNam Cha |
| author_facet | Younghoon Lim Taehun Kim Jaesik Eom Onsik Harm Junsung Byeon Jungmoon Lim Juwon Lee Sangyeon Pak SeungNam Cha |
| author_sort | Younghoon Lim |
| collection | DOAJ |
| description | Abstract Neuromorphic visual systems mimicking biological retina functionalities are emerging as next‐generation retinomorphic devices for consolidating sensing and memorizing systems. In particular, monolayer MoS2 has been proposed as a promising material for retinomorphic devices due to their unique electrical and optical properties. Despite the advantages of MoS2 material, several limitations, such as PPC (persistent photoconductivity) or additional operating voltage, restrict the optimization of neuromorphic visual systems in MoS2‐based retinomorphic devices. Herein, the two‐terminal retinomorphic devices are reported featuring a tailored gating voltage range near zero and enhanced synaptic plasticity by providing another recombination route to suppress the PPC effect. Furthermore, pattern recognition results confirm that the retinomorphic devices effectively emulate the functions of the retina with a low device‐to‐device variation. This remarkable performance of MoS2‐based retinomorphic devices utilizing a functionalized substrate presents proposes an important pathway toward designing 2D materials‐based synaptic devices. |
| format | Article |
| id | doaj-art-1edcca06394045eaa09d8c7d30b3a3be |
| institution | Kabale University |
| issn | 2199-160X |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj-art-1edcca06394045eaa09d8c7d30b3a3be2025-08-20T03:30:29ZengWiley-VCHAdvanced Electronic Materials2199-160X2025-07-011111n/an/a10.1002/aelm.202400878Two‐Terminal MoS2‐Based Retinomorphic Devices with Enhanced Synaptic PlasticityYounghoon Lim0Taehun Kim1Jaesik Eom2Onsik Harm3Junsung Byeon4Jungmoon Lim5Juwon Lee6Sangyeon Pak7SeungNam Cha8Department of Physics Sungkyunkwan University Suwon 16419 Republic of KoreaDepartment of Physics Sungkyunkwan University Suwon 16419 Republic of KoreaDepartment of Physics Sungkyunkwan University Suwon 16419 Republic of KoreaDepartment of Physics Sungkyunkwan University Suwon 16419 Republic of KoreaDepartment of Physics Sungkyunkwan University Suwon 16419 Republic of KoreaDepartment of Physics Sungkyunkwan University Suwon 16419 Republic of KoreaSchool of Electronic and Electrical Engineering Sungkyunkwan University Suwon 16419 Republic of KoreaSchool of Electronic and Electrical Engineering Hongik University Seoul 04066 Republic of KoreaDepartment of Physics Sungkyunkwan University Suwon 16419 Republic of KoreaAbstract Neuromorphic visual systems mimicking biological retina functionalities are emerging as next‐generation retinomorphic devices for consolidating sensing and memorizing systems. In particular, monolayer MoS2 has been proposed as a promising material for retinomorphic devices due to their unique electrical and optical properties. Despite the advantages of MoS2 material, several limitations, such as PPC (persistent photoconductivity) or additional operating voltage, restrict the optimization of neuromorphic visual systems in MoS2‐based retinomorphic devices. Herein, the two‐terminal retinomorphic devices are reported featuring a tailored gating voltage range near zero and enhanced synaptic plasticity by providing another recombination route to suppress the PPC effect. Furthermore, pattern recognition results confirm that the retinomorphic devices effectively emulate the functions of the retina with a low device‐to‐device variation. This remarkable performance of MoS2‐based retinomorphic devices utilizing a functionalized substrate presents proposes an important pathway toward designing 2D materials‐based synaptic devices.https://doi.org/10.1002/aelm.202400878MoS2recombinationretinomorphic devicesynaptic devicesynaptic plasticity |
| spellingShingle | Younghoon Lim Taehun Kim Jaesik Eom Onsik Harm Junsung Byeon Jungmoon Lim Juwon Lee Sangyeon Pak SeungNam Cha Two‐Terminal MoS2‐Based Retinomorphic Devices with Enhanced Synaptic Plasticity Advanced Electronic Materials MoS2 recombination retinomorphic device synaptic device synaptic plasticity |
| title | Two‐Terminal MoS2‐Based Retinomorphic Devices with Enhanced Synaptic Plasticity |
| title_full | Two‐Terminal MoS2‐Based Retinomorphic Devices with Enhanced Synaptic Plasticity |
| title_fullStr | Two‐Terminal MoS2‐Based Retinomorphic Devices with Enhanced Synaptic Plasticity |
| title_full_unstemmed | Two‐Terminal MoS2‐Based Retinomorphic Devices with Enhanced Synaptic Plasticity |
| title_short | Two‐Terminal MoS2‐Based Retinomorphic Devices with Enhanced Synaptic Plasticity |
| title_sort | two terminal mos2 based retinomorphic devices with enhanced synaptic plasticity |
| topic | MoS2 recombination retinomorphic device synaptic device synaptic plasticity |
| url | https://doi.org/10.1002/aelm.202400878 |
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