Inkjet-printed graphene Hall mobility measurements and low-frequency noise characterization

被引：25

作者：

Calabrese, Gabriele ^{[1
]}

Pimpolari, Lorenzo ^{[1
]}

Conti, Silvia ^{[1
]}

Mavier, Fabrice ^{[1
]}

Majee, Subimal ^{[2
]}

Worsley, Robyn ^{[2
]}

Wang, Zihao ^{[1
,3
]}

Pieri, Francesco ^{[1
]}

Basso, Giovanni ^{[1
]}

Pennelli, Giovanni ^{[1
]}

Parvez, Khaled ^{[2
]}

Brooks, David ^{[2
]}

Macucci, Massimo ^{[1
]}

Iannaccone, Giuseppe ^{[1
]}

Novoselov, Kostya S. ^{[3
,4
,5
]}

Casiraghi, Cinzia ^{[2
]}

Fiori, Gianluca ^{[1
]}

机构：

[1] Univ Pisa, Dipartimento Ingn Informaz, I-56122 Pisa, Italy

[2] Univ Manchester, Dept Chem, Manchester M13 9PL, Lancs, England

[3] Univ Manchester, Dept Phys & Astron, Manchester M13 9PL, Lancs, England

[4] Chongqing 2D Mat Inst, Chongqing 400714, Peoples R China

[5] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore

来源：

NANOSCALE | 2020年 / 12卷 / 12期

基金：

欧盟地平线“2020”; 英国工程与自然科学研究理事会; 欧洲研究理事会;

关键词：

1/F NOISE; EXFOLIATED GRAPHENE; PHASE EXFOLIATION; WATER; INKS; GRAPHITE; CONDUCTIVITY; DISPERSIONS; ELECTRONICS; ROADMAP;

D O I：

10.1039/c9nr09289g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report room temperature Hall mobility measurements, low temperature magnetoresistance analysis and low-frequency noise characterization of inkjet-printed graphene films on fused quartz and SiO2/Si substrates. We found that thermal annealing in vacuum at 450 degrees C is a necessary step in order to stabilize the Hall voltage across the devices, allowing their electrical characterization. The printed films present a minimum sheet resistance of 23.3 omega sq(-1) after annealing, and are n-type doped, with carrier concentrations in the low 10(20) cm(-3) range. The charge carrier mobility is found to increase with increasing film thickness, reaching a maximum value of 33 cm(2) V-1 s(-1) for a 480 nm-thick film printed on SiO2/Si. Low-frequency noise characterization shows a 1/f noise behavior and a Hooge parameter in the range of 0.1-1. These results represent the first in-depth electrical and noise characterization of transport in inkjet-printed graphene films, able to provide physical insights on the mechanisms at play.

引用

页码：6708 / 6716

页数：9

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