Side chains contributions to characteristics of resistive memory based on water-soluble polyfluorenes: Effects of structure and length of side pendant group

Title
Side chains contributions to characteristics of resistive memory based on water-soluble polyfluorenes: Effects of structure and length of side pendant group
Authors
이승훈오승환지용성김주환강리라김동윤이세현여준석Ning LuMoon J. Kim고흥조김태욱노용영김동유
Keywords
Organic resistive memory; Bipolar switching; Water-soluble polyfluorene; Ethylene oxide side chain; Conjugated polyelectrolyte
Issue Date
2014-06
Publisher
Organic electronics
Citation
VOL 15, NO 6, 1290-1298
Abstract
This paper investigates the effects of side chains, which are important structural constituents, on the characteristics of organic resistive memory devices with water-soluble polyfluorene (WPF) derivatives. The WPF derivatives have either an ethylene oxide (EO) or an alkyl side chain the lengths of the EO side chains are 2, 4, or 6 molecules. WPFs exhibit typical bipolar switching behaviors with reliable non-volatile characteristics and good device-to-device uniformity under ambient conditions. WPFs with the EO side chains showed better memory characteristics than those of the alkyl side chains of similar length. In addition, as the EO unit lengthened, the ON/OFF ratio of the memory device gradually increased from 5 × 102 to 105, and the threshold voltage (Vth) progressively decreased from 4 to 3.5 V. The retention times for WPF-hexyl, WPF-2O, WPF-4O, and WPF-6O are 104, 200, 104, and 104 s, respectively. The excellent switching properties of WPF-4O and WPF-6O are believed to be mainly attributed to highly localized current pathways and the low trap density.
URI
http://pubs.kist.re.kr/handle/201004/47607
ISSN
15661199
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE