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- Title
Facile Achievement of Complementary Resistive Switching in Block Copolymer Micelle‐Based Resistive Memories.
- Authors
Choi, Han‐Hyeong; Kim, Hyun Jin; Oh, Jinwoo; Kim, Minsung; Kim, Youngjin; Jho, Jae Young; Lee, Keun Hyung; Son, Jeong Gon; Park, Jong Hyuk
- Abstract
Interest in resistive random access memory (RRAM) has grown rapidly in recent years for realizing ultrahigh density data storage devices. However, sneak currents in these devices can result in misreading of the data, thus limiting the applicability of RRAM. Complementary resistive switching (CRS) memory consisting of two antiserial RRAMs can considerably reduce sneak currents; however, complicated device architectures and manufacturing processes still remain as challenges. Herein, an effective and simple approach for fabricating CRS memory devices using self‐assembled block copolymer micelles is reported. Cu ions are selectively placed in the core of polystyrene‐block‐poly(2‐vinylpyridine) spherical micelles, and a hexagonally packed micelle monolayer is prepared through spin‐coating. The micelle monolayer can be a symmetrical resistive switching layer, because the micelles and Cu act as dielectric and active metals in memory devices, respectively. The locally enhanced electric field and Joule heating achieved by the structured Cu atoms inside the micelles promote metal ionization and ion migration in a controlled manner, thus allowing for position selectivity during resistive switching. The micelle‐based memory device exhibits stable and reliable CRS behavior, with a nonoverlapping and narrow distribution of threshold voltages. Therefore, this approach is promising for fabricating CRS memory devices for high‐performance and ultrahigh‐density RRAM applications.
- Subjects
NONVOLATILE random-access memory; COPOLYMER micelles; COMPUTER storage devices; DATA warehousing; THRESHOLD voltage; POLYSTYRENE; BLOCK copolymers
- Publication
Macromolecular Rapid Communications, 2022, Vol 43, Issue 7, p1
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.202100686