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

Byungjin Cho; Tae Wook Kim; Minhyeok Choe; Gunuk Wang; Sunghoon Song; Takhee Lee

doi:10.1016/j.orgel.2009.02.001

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

Byungjin Cho
, Tae Wook Kim
, Minhyeok Choe
, Gunuk Wang
, Sunghoon Song
, Takhee Lee^*

^*Corresponding author for this work

Department of Flexible and Printable Electronics

Gwangju Institute of Science and Technology

Research output: Contribution to journal › Journal article › peer-review

103 Scopus citations

Abstract

Organic-based devices with an 8 × 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 × 8 array structure showed a uniform cell-to-cell switching, stable switching endurance, and a high retention time longer than 10⁴ s. Crown

Original language	English
Pages (from-to)	473-477
Number of pages	5
Journal	Organic Electronics
Volume	10
Issue number	3
DOIs	https://doi.org/10.1016/j.orgel.2009.02.001
State	Published - 2009.05

Keywords

Filamentary conduction
Nonvolatile unipolar memory
Poly(9-vinylcarbazole)
Titanium dioxide nanoparticles

Access to Document

10.1016/j.orgel.2009.02.001

Cite this

@article{9fa2f404838d4dc1b47f815108512da3,

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

abstract = "Organic-based devices with an 8 × 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 × 8 array structure showed a uniform cell-to-cell switching, stable switching endurance, and a high retention time longer than 104 s. Crown",

keywords = "Filamentary conduction, Nonvolatile unipolar memory, Poly(9-vinylcarbazole), Titanium dioxide nanoparticles",

author = "Byungjin Cho and Kim, \{Tae Wook\} and Minhyeok Choe and Gunuk Wang and Sunghoon Song and Takhee Lee",

year = "2009",

month = may,

doi = "10.1016/j.orgel.2009.02.001",

language = "English",

volume = "10",

pages = "473--477",

journal = "Organic Electronics",

issn = "1566-1199",

number = "3",

}

TY - JOUR

T1 - Unipolar nonvolatile memory devices with composites of poly(9-vinylcarbazole) and titanium dioxide nanoparticles

AU - Cho, Byungjin

AU - Kim, Tae Wook

AU - Choe, Minhyeok

AU - Wang, Gunuk

AU - Song, Sunghoon

AU - Lee, Takhee

PY - 2009/5

Y1 - 2009/5

N2 - Organic-based devices with an 8 × 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 × 8 array structure showed a uniform cell-to-cell switching, stable switching endurance, and a high retention time longer than 104 s. Crown

AB - Organic-based devices with an 8 × 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 × 8 array structure showed a uniform cell-to-cell switching, stable switching endurance, and a high retention time longer than 104 s. Crown

KW - Filamentary conduction

KW - Nonvolatile unipolar memory

KW - Poly(9-vinylcarbazole)

KW - Titanium dioxide nanoparticles

UR - https://www.scopus.com/pages/publications/62649089605

U2 - 10.1016/j.orgel.2009.02.001

DO - 10.1016/j.orgel.2009.02.001

M3 - Journal article

AN - SCOPUS:62649089605

SN - 1566-1199

VL - 10

SP - 473

EP - 477

JO - Organic Electronics

JF - Organic Electronics

IS - 3

ER -

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this