Ambipolar Resistive Switching in an Ultrathin Surface-Supported Metal-Organic Framework Vertical Heterojunction

Author(s)

Albano, Luiz G. S. ^[1] ; Vello, Tatiana P. ^{[2, 1]} ; de Camargo, Davi H. S. ^{[3, 1]} ; da Silva, Ricardo M. L. ^{[3, 1]} ; Padilha, Antonio C. M. ^[1] ; Fazzio, Adalberto ^[1] ; Bufon, Carlos C. B. ^{[2, 3, 1]}

Affiliation

^[1] Brazilian Ctr Res Energy & Mat CNPEM, Campinas - Brazil

^[2] Univ Campinas UNICAMP, Campinas - Brazil

^[3] Sao Paulo State Univ UNESP, Bauru, SP - Brazil

• Document type: Journal article
• Source: Nano Letters; v. 20, n. 2, p. 1080-1088, FEB 2020.
• Web of Science Citations: 1

Abstract

Memristors (MRs) are considered promising devices with the enormous potential to replace complementary metal-oxide-semiconductor (CMOS) technology, which approaches the scale limit. Efforts to fabricate MRs-based hybrid materials may result in suitable operating parameters coupled to high mechanical flexibility and low cost. Metal-organic frameworks (MOFs) arise as a favorable candidate to cover such demands. The step-by-step growth of MOFs structures on functionalized surfaces, called surface-supported metal-organic frameworks (SURMOFs), opens the possibility for designing new applications in strategic fields such as electronics, optoelectronics, and energy harvesting. However, considering the MRs architecture, the typical high porosity of these hybrid materials may lead to short-circuited devices easily. In this sense, here, it is reported for the first time the integration of SURMOF films in rolled-up scalable-functional devices. A freestanding metallic nanomembrane provides a robust and self-adjusted top mechanical contact on the SURMOF layer. The electrical characterization reveals an ambipolar resistive switching mediated by the humidity level with low-power consumption. The electronic properties are investigated with density functional theory (DFT) calculations. Furthermore, the device concept is versatile, compatible with the current parallelism demands of integration, and transcends the challenge in contacting SURMOF films for scalable-functional devices. (AU)

• FAPESP's process: 17/25553-3 - Fabrication and characterization of self-rolled up nanomembranes of surface-supported metal-organic frameworks (SURMOFs) for applications in ultracompact electronic devices
• Grantee: Luíz Gustavo Simão Albano
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 14/50906-9 - INCT 2014: in Functional Complex Materials
• Grantee: Fernando Galembeck
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 17/02317-2 - Interfaces in materials: electronic, magnetic, structural and transport properties
• Grantee: Adalberto Fazzio
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 16/25346-5 - Capacitive devices for hybrid nanostructures characterization: study of electrical properties of surface metal-organic frameworks -SURMOFs- and metallophthalocyanines
• Grantee: Tatiana Parra Vello
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 14/25979-2 - Fabrication and characterization of devices and systems based on hybrid nanomembranes
• Grantee: Carlos César Bof Bufon
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 18/05565-0 - Weyl semi-metal surfaces
• Grantee: Antonio Cláudio Michejevs Padilha
• Support Opportunities: Scholarships in Brazil - Post-Doctoral