Organic Reversible Switching Devices for Memory Applications

Abstract

Organic memories (non‐optical) constitute an exception in the recent rapid growth of the literature related to organic electronic devices. Going against this trend, the authors present the electrical characteristics of switching devices based on a poly(methacrylate) derivative with pendent anthracene chromophores, MDCPAC. This material combines the excellent thin‐film mechanical properties of poly(methacrylate) with anthracene's interesting electronic properties. MDCPAC is shown to have the basic properties required for binary information storage and potential for organic memory applications.

Enhancement of electrical bistability through semiconducting nanoparticles for organic memory applications

“…The range widened further with the work showing organic memory for data-storage applications (Ma et al 2000;Bandhopadhyay & Pal 2003;Yang et al 2004). Organic memory is manifested owing to electrical bistability of molecules and devices (Donhauser et al 2001;Solak et al 2002;Ssenyange et al 2006).…”

Resistive switching of rose bengal devices: A molecular effect?

“…1,2 Since then a wide variety of molecules such as tetracene, 1 anthracene, 2 polymethacrylate derivatives, 3 phenylene ethynylenes ͑known as Tour wires͒, 4-8 bipolar diarylethenes, 9 copper tetra͑butylphenyl͒porphyrin, 10 and rotaxane 11 have been proposed as basic materials for molecular memories. Recently, layers of rose bengal ͑see Fig.…”

Electrical Bistable Characteristics of Organic Charge Transfer Complex for Memory Device Applications

“…These conditions include a lower threshold voltage (<5 V), a higher ON/OFF ratio (>orders of 103), a rapid switching time (<100 ns), longer retention (>10 years at 60 o C), higher duration (>106 cycles) and a high memory capacity (>109 bite). Among the several types of organic (polymer) memory devices, such as trapping filling [13], filamentary conduction [14,15], electrochromicity [16], electroreduction and conformation changes of molecules [17,18], organic/metal/organic (O/M/O) structures [19][20][21][22] and charge transfer (CT) complex [23][24][25][26][27][28][29][30][31], last two organic (polymer) memory devices, organic/metal/organic (O/M/ O) structures and charge transfer (CT) complex, are entitled to be used for practical application. Especially, organic (polymer) memory devices based on the CT complex are expected to show fastest switching times (<10 ns), as the switching takes place via a rapid electronic process (redox reaction) rather than a slow process (chemical reaction, a conformational change, or isomerization), as reported in other memory devices.…”

“…Recently, considerable attention has been directed toward electrical switching and memory devices which consist of organic materials, polymers and charge transfer complexes with an electrical bistable function [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Memory devices based on organic (polymer) materials have many advantages compared to inorganic memory devices, such as flexibility, simple processing, a low cost, and largearea fabrication via printing technology.…”