Erratum: “Memory device applications of a conjugated polymer: Role of space charges” [J. Appl. Phys. <b>91</b>, 2433 (2002)]

Majumdar, Himadri S.; Bandyopadhyay, Anirban; Bolognesi, A.; Pal, Amlan J.

doi:10.1063/1.1470663

Cited by 30 publications

(46 citation statements)

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“…Nominally homogeneous polymers have been used in MIM devices, including true insulators such as polystyrene [36,37] and acrylates [36] as well as PVK [38] with its active side-group, and conjugated polymers such as thiophene derivatives, [39,40] polybiphenyls, [41,42] poly(spirofluorene), [43] and substituted poly(phenylene vinylene). [44] Combinations of functional components have been explored as potential storage media, most commonly electron donors and acceptors, motivated by the conductive properties of organic charge-transfer complexes.…”

Section: Reviewmentioning

confidence: 99%

Nonvolatile Memory Elements Based on Organic Materials

2007

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Many organic electronic devices exhibit switching behavior, and have therefore been proposed as the basis for a nonvolatile memory (NVM) technology. This Review summarizes the materials that have been used in switching devices, and describes the variety of device behavior observed in their charge–voltage (capacitive) or current–voltage (resistive) response. A critical summary of the proposed charge‐transport mechanisms for resistive switching is given, focusing particularly on the role of filamentary conduction and of deliberately introduced or accidental nanoparticles. The reported device parameters (on–off ratio, on‐state current, switching time, retention time, cycling endurance, and rectification) are compared with those that would be necessary for a viable memory technology.

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Section: Reviewmentioning

confidence: 99%

Nonvolatile Memory Elements Based on Organic Materials

2007

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“…Single-layer devices using either small organic compounds or polymers were demonstrated as well. Small organic compounds include pentacene, [55] co-deposited Cu:TCNQ (TCNQ: 7,7,8,8-tetracyanoquinoline), [57] Alq 3 , [58] N,N′-diphenyl-N,N′-bis(1-naphthyl)-(1,1′-biphenyl)-4,4′-diamine (NPB), [59] poly[3-(6-methoxyhexyl)thiophene], [60,61] and the copolymer of N-vinylcarbazole and Eu-complexed vinylbenzoate. [62] Polymers have the advantage of solution processibility.…”

Section: Research On Polymer/organic Memory Devices Worldwidementioning

confidence: 99%

Electrical Switching and Bistability in Organic/Polymeric Thin Films and Memory Devices

Yang

Ouyang

et al. 2006

Adv Funct Materials

570

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Recently, films created by incorporating metallic nanoparticles into organic or polymeric materials have demonstrated electrical bistability, as well as the memory effect, when subjected to an electrical bias. Organic and polymeric digital memory devices based on this bistable electronic behavior have emerged as a viable technology in the field of organic electronics. These devices exhibit fast response speeds and can form multiple‐layer stacking structures, demonstrating that organic memory devices possess a high potential to become flexible, ultrafast, and ultrahigh‐density memory devices. This behavior is believed to be related to charge storage in the organic or polymer film, where devices are able to exhibit two different states of conductivity often separated by several orders of magnitude. By defining the two states as “1” and “0”, it is now possible to create digital memory devices with this technology. This article reviews electrically bistable devices developed in our laboratory. Our research has stimulated strong interest in this area worldwide. The research by other laboratories is reviewed as well.

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“…[5,[7][8][9][10][11] If we take into account the low production cost and the success of the existing polymer electronic devices (such as flexible active-matrix displays), [12] ORRAM comes out as a very serious candidate for a near-future comprehensive memory device. Although memory effects in organic materials were reported many years ago, [13] the topic has been revived only recently, [11,14,15] leading to the production of cells with very long retention times and nanosecond response, as well as writeonce-read-many (WORM) devices. Most articles in the literature describe how metal layers [14] or metal nanoparticles [16][17][18] are inserted into the organic material, although bare organic films have been studied as well.…”

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confidence: 99%

“…Although memory effects in organic materials were reported many years ago, [13] the topic has been revived only recently, [11,14,15] leading to the production of cells with very long retention times and nanosecond response, as well as writeonce-read-many (WORM) devices. Most articles in the literature describe how metal layers [14] or metal nanoparticles [16][17][18] are inserted into the organic material, although bare organic films have been studied as well. [19,20] These metal inclusions are nevertheless considered to be critical for the observation of the memory effects, as they act as trapping centers for the carriers.…”

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confidence: 99%