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International Center for Materials Nanoarchitectonics (WPI-MANA)

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[[Research Highlights Vol.88]Advancing Organic Circuits: MANA Study Changes the Current Computing Architecture](https://mdr.nims.go.jp/datasets/a4d2ffb7-dbb8-4e1c-8bc3-c78a32cba59d)

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Advancing Organic Circuits: MANA Study Changes the Current Computing Architecture| MANAPrevious Index NextResearch Highlights[Vol. 88]Advancing Organic Circuits: MANA Study Changes the Current ComputingArchitecture22 Feb, 2024Researchers from the Research Center for Materials Nanoarchitectonics (MANA) have developeda novel organic logic inverter circuit capable of handling four logical states. This advancementimproves the data processing capabilities of organic integrated circuits.Organic integrated circuits, constructed with small molecules or polymers, show great potential forhuman-friendly interactive mobile applications. These circuits are lightweight, flexible, biocompatible,and cost-effective. As a result, they are important for the development of radio-frequency identificationtags, smart displays, and healthcare sensors. However, traditional organic circuits are incompatible withmodern lithographic techniques and thus suffer from low integration density and poor data processingcapability. To address this issue, ongoing efforts are focused on developing multivalued logic circuitsbased on antiambipolar transistors (AATs).In a recent breakthrough, a research team from MANA, including principal researcher Ryoma Hayakawa,group leader Yutaka Wakayama, and JSPS fellow Debdatta Panigrahi, has successfully created an organicquaternary logic inverter circuit that can handle four logical states, a notable advancement beyond thetraditional three found in ternary logic circuits. The organic quaternary logic inverter circuit wasconstructed by connecting an AAT, comprising two n-type organic semiconductors and a p-type organicsemiconductor, to a double-layered n-type transistor in series.Dr. Hayakawa explains: “We have developed an organic AAT, which exhibited two distinct negativedifferential transconductance (NDT) characteristics. The bi-NDT characteristics were achieved via theincorporation of two lateral organic heterojunctions. Each heterojunction could generate an NDTResearchQuantum Materials FieldNanomaterials FieldResearch SupportResearch HighlightsHot TopicsHome  > Research  > Research Highlights  > Vol. 88 Advancing Organic Circuits: MA･･･About MANA Research People News Room Outreach Employment AlumniSite Map Contact Us Access to MANA Website System Requirements   Text size  Standard Large  Japanese Page2024/07/16 13:40 Advancing Organic Circuits: MANA Study Changes the Current Computing Architecture| MANAhttps://www.nims.go.jp/mana/research/highlights/vol88.html 1/2https://www.nims.go.jp/mana/research/highlights/vol87.htmlhttps://www.nims.go.jp/mana/research/highlights/index.htmlhttps://www.nims.go.jp/mana/research/highlights/vol89.htmlhttps://www.nims.go.jp/mana/research/index.htmlhttps://www.nims.go.jp/mana/research/quantum_material.htmlhttps://www.nims.go.jp/mana/research/nano_material.htmlhttps://www.nims.go.jp/mana/research/researcher_support.htmlhttps://www.nims.go.jp/mana/research/highlights/index.htmlhttps://www.nims.go.jp/mana/research/hottopics/index.htmlhttps://www.nims.go.jp/mana/jp/index.htmlhttps://www.nims.go.jp/mana/research/index.htmlhttps://www.nims.go.jp/mana/research/highlights/index.htmlhttp://www.jsps.go.jp/english/e-toplevel/http://www.jsps.go.jp/english/e-toplevel/https://www.nims.go.jp/mana/index.htmlhttps://www.nims.go.jp/mana/index.htmlhttps://www.nims.go.jp/mana/about/index.htmlhttps://www.nims.go.jp/mana/research/index.htmlhttps://www.nims.go.jp/mana/member/index.htmlhttps://www.nims.go.jp/mana/news_room/2024.htmlhttps://www.nims.go.jp/mana/pror/index.htmlhttps://www.nims.go.jp/mana/recruit/index.htmlhttps://www.nims.go.jp/mana/alumni/index.htmlhttps://www.nims.go.jp/mana/siteinfo/sitemap.htmlhttps://www.nims.go.jp/mana/siteinfo/inquiry.htmlhttps://www.nims.go.jp/mana/siteinfo/access.htmlhttps://www.nims.go.jp/mana/siteinfo/accessibility.htmlhttps://www.nims.go.jp/mana/jp/research/highlights/vol88.htmlcharacteristic, which instigated the bi-NDT behavior in the AATs.” This unique bi-NDT feature enabled theteam to produce a quaternary inverter that can handle four logic states without increasing the numberof transistors. This innovation can, thus, significantly improve the data processing capability of organicintegrated circuits.This quaternary inverter achieves the four distinguishable logic states of "1," "2/3," "1/3" and "0" at arelatively low driving voltage of 14 V, making it suitable for energy-efficient logic applications. Theproposed circuit thus advances the capabilities of organic circuits for more demanding computingapplications.ReferenceJournal Advanced Functional MaterialsTitle Antiambipolar Transistor with Double Negative Differential Transconductances for Organic QuaternaryLogic CircuitsAuthors Debdatta Panigrahi, Ryoma Hayakawa, Yutaka WakayamaAffiliations Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS),Namiki 1-1, Tsukuba, Ibaraki 305-0044, JapanDOI 10.1002/adfm.202213899Contact informationResearch Center for Materials Nanoarchitectonics (MANA)National Institute for Materials Science1-1 Namiki, Tsukuba, Ibaraki 305-0044 JapanPhone: +81-29-860-4710E-mail: mana-pr[AT]nims.go.jpTo receive our e-mail newsletter “MANA Research Highlights”, please send an e-mail with "MANA ResearchHighlights request” in the subject line or main text to the following address: mana-pr_at_nims.go.jp *Pleasechange "_at_ " in the email address to @.Research Center for Materials Nanoarchitectonics (MANA)National Institute for Materials Science (NIMS)1-1 Namiki Tsukuba, Ibaraki 305-0044 JAPAN+81-29-860-4709E-mail: mana[AT]nims.go.jpCopyright © National Institute for Materials Science. 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