Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Tailorable Electronic and Electric Properties of Graphene with Selective Decoration of Silver Nanoparticles by Laser-Assisted Photoreduction

Authors
Song InseonKim YujeongLee Byung HoonChae MinjiKim SooyeonYoon ChangKyuJoo Min-KyuShin JeeyoungKim Soo MinKo Changhyun
Issue Date
Oct-2022
Publisher
MDPI
Citation
NANOMATERIALS, v.12, no.20, pp.1 - 14
Journal Title
NANOMATERIALS
Volume
12
Number
20
Start Page
1
End Page
14
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/151423
DOI
10.3390/nano12203549
Abstract
While graphene shows great potential for diverse device applications, to broaden the scope of graphene-based device applications further, it would be necessary to tune the electronic state of graphene and its resultant electrical properties properly. Surface decoration with metal nanoparticles is one of the efficient doping methods to control the properties of two-dimensional materials. Here, we report the p-type doping effects in single-layer graphene decorated with silver nanoparticles (AgNPs) that were formed area-selectively by the facile one-step photoreduction (PR) process based on focused-laser irradiation. During the PR process, AgNPs were reduced on graphene in AgNO3 solution by laser-driven photoexcitation followed by chemical reactions. Based on scanning electron microscopy analyses, the morphology characteristics of AgNPs were shown to be modulated by the laser dwell time and power controllably. Further, p-type doping effects were demonstrated using graphene-field-effect transistor structures whose graphene channels were selectively decorated with AgNPs by the PR process, as validated by the decrease in channel resistance and the shift of the Dirac point voltage. Moreover, the growth of AgNPs was observed to be more active on the graphene channel that was laser-annealed ahead of the PR process, leading to enhancing the efficiency of this approach for altering device characteristics.
Files in This Item
Go to Link
Appears in
Collections
이과대학 > 화학과 > 1. Journal Articles
ICT융합공학부 > 응용물리전공 > 1. Journal Articles
공과대학 > 기계시스템학부 > 1. Journal Articles

qrcode

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

Related Researcher

Researcher Joo, Min Kyu photo

Joo, Min Kyu
ICT융합공학부 (응용물리전공)
Read more

Altmetrics

Total Views & Downloads

BROWSE