Unipolar nonvolatile memory devices with composites of poly(9-vinylcarbazole) and titanium dioxide nanoparticles

被引：94

作者：

Cho, Byungjin ^{[1
]}

Kim, Tae-Wook ^{[1
]}

Choe, Minhyeok ^{[1
]}

Wang, Gunuk ^{[1
]}

Song, Sunghoon ^{[1
]}

Lee, Takhee ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol, Dept Mat Sci & Engn, Kwangju 500712, South Korea

来源：

ORGANIC ELECTRONICS | 2009年 / 10卷 / 03期

关键词：

Nonvolatile unipolar memory; Filamentary conduction; Poly(9-vinylcarbazole); Titanium dioxide nanoparticles; THIN-FILM; ORGANIC MATERIALS; POLYMER; ELEMENTS;

D O I：

10.1016/j.orgel.2009.02.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Organic-based devices with an 8 x 8 array structure using titanium dioxide nanoparticles (TiO2 NPs) embedded in poly(9-vinylcarbazole) (PVK) film exhibited bistable resistance states and a unipolar nonvolatile memory effect. TiO2 NPs were a key factor for realizing the bistability and the concentration of TiO2 NPs influenced ON/OFF ratio. From electrical measurements, switching mechanism of PVK:TiO2 NPs devices was closely associated with filamentary conduction model and it was found that the OFF state was dominated by thermally activated transport while the ON state followed tunneling transport. PVK:TiO2 NPs memory devices in 8 x 8 array structure showed a uniform cell-to-cell switching, stable switching endurance, and a high retention time longer than 10(4) s. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：473 / 477

页数：5

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