View : 67 Download: 0

Atomically-thin molecular layers for electrode modification of organic transistors

Title
Atomically-thin molecular layers for electrode modification of organic transistors
Authors
Gim, YuseongKang, BoseokKim, BongSooKim, Sun-GukLee, Joong-HeeCho, KilwonKu, Bon-CheolCho, Jeong Ho
Ewha Authors
김봉수
SCOPUS Author ID
김봉수scopus
Issue Date
2015
Journal Title
NANOSCALE
ISSN
2040-3364JCR Link2040-3372JCR Link
Citation
vol. 7, no. 33, pp. 14100 - 14108
Publisher
ROYAL SOC CHEMISTRY
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Atomically-thin molecular layers of aryl-functionalized graphene oxides (GOs) were used to modify the surface characteristics of source-drain electrodes to improve the performances of organic field-effect transistor (OFET) devices. The GOs were functionalized with various aryl diazonium salts, including 4-nitroaniline, 4-fluoroaniline, or 4-methoxyaniline, to produce several types of GOs with different surface functional groups (NO2-Ph-GO, F-Ph-GO, or CH3O-Ph-GO, respectively). The deposition of aryl-functionalized GOs or their reduced derivatives onto metal electrode surfaces dramatically enhanced the electrical performances of both p-type and n-type OFETs relative to the performances of OFETs prepared without the GO modification layer. Among the functionalized rGOs, CH3O-Ph-rGO yielded the highest hole mobility of 0.55 cm(2) V-1 s(-1) and electron mobility of 0.17 cm(2) V-1 s(-1) in p-type and n-type FETs, respectively. Two governing factors: (1) the work function of the modified electrodes and (2) the crystalline microstructures of the benchmark semiconductors grown on the modified electrode surface were systematically investigated to reveal the origin of the performance improvements. Our simple, inexpensive, and scalable electrode modification technique provides a significant step toward optimizing the device performance by engineering the semiconductor-electrode interfaces in OFETs.
DOI
10.1039/c5nr03307a
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
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