The Electrical and Morphological Characteristics of Networks of Mechanically Exfoliated Nanosheets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43933866" target="_blank" >RIV/60461373:22310/25:43933866 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/smsc.202500417" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/smsc.202500417</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/smsc.202500417" target="_blank" >10.1002/smsc.202500417</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Electrical and Morphological Characteristics of Networks of Mechanically Exfoliated Nanosheets

Popis výsledku v původním jazyce

Solution-processed nanosheet networks show great promise for the field of printed electronics due to their inherent scalability and competitive electrical properties. However, recent progress has allowed for the production of nanosheet networks by a dry, roll-to-roll mechanical exfoliation process. While this method is promising for producing low-cost devices, the electrical properties of such networks are poorly understood and will require elucidation to enable optimization. Herein, the morphological and electrical properties of mechanically exfoliated networks of MoS2 are investigated. 3D images reveal that the networks show low porosity (11 +/- 2%) and a high degree of in-plane alignment. The network conductivity is dependent on annealing temperature and reaches a maximum of 11 +/- 0.6 S m-1, when annealed at 300 degrees C. The networks show n-type behavior with a mobility of 0.8 +/- 0.1 cm2 V-1 s-1. Electrical impedance spectroscopy measurements reveal that this relatively low network mobility is caused by a combination of high inter-nanosheet resistance (890 +/- 150 k Omega) and low intrinsic mobility of the nanosheets (7 +/- 2 cm2 V-1 s-1). Temperature-dependent conductivity measurements show activated hopping as the internanosheet conduction mechanism near room temperature, with an activation energy of 61.9 +/- 0.2 meV.

Název v anglickém jazyce

The Electrical and Morphological Characteristics of Networks of Mechanically Exfoliated Nanosheets

Popis výsledku anglicky

Solution-processed nanosheet networks show great promise for the field of printed electronics due to their inherent scalability and competitive electrical properties. However, recent progress has allowed for the production of nanosheet networks by a dry, roll-to-roll mechanical exfoliation process. While this method is promising for producing low-cost devices, the electrical properties of such networks are poorly understood and will require elucidation to enable optimization. Herein, the morphological and electrical properties of mechanically exfoliated networks of MoS2 are investigated. 3D images reveal that the networks show low porosity (11 +/- 2%) and a high degree of in-plane alignment. The network conductivity is dependent on annealing temperature and reaches a maximum of 11 +/- 0.6 S m-1, when annealed at 300 degrees C. The networks show n-type behavior with a mobility of 0.8 +/- 0.1 cm2 V-1 s-1. Electrical impedance spectroscopy measurements reveal that this relatively low network mobility is caused by a combination of high inter-nanosheet resistance (890 +/- 150 k Omega) and low intrinsic mobility of the nanosheets (7 +/- 2 cm2 V-1 s-1). Temperature-dependent conductivity measurements show activated hopping as the internanosheet conduction mechanism near room temperature, with an activation energy of 61.9 +/- 0.2 meV.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Small Science

ISSN

2688-4046

e-ISSN

2688-4046

Svazek periodika

5

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

"e202500417"

Kód UT WoS článku

001596637900001

EID výsledku v databázi Scopus

2-s2.0-105019255356