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
N1 - Funding Information:
This work was supported by the National Research Laboratory (NRL) Program of the Korea Science and Engineering Foundation (KOSEF), the Program for Integrated Molecular System at GIST, and System IC 2010 project of Korea Ministry of Knowledge Economy.
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 - http://www.scopus.com/inward/record.url?scp=62649089605&partnerID=8YFLogxK
U2 - 10.1016/j.orgel.2009.02.001
DO - 10.1016/j.orgel.2009.02.001
M3 - Article
AN - SCOPUS:62649089605
SN - 1566-1199
VL - 10
SP - 473
EP - 477
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
IS - 3
ER -