High mobility ambipolar MoS2 field-effect transistors: Substrate and dielectric effects
By Wenzhong Bao, Xinghan Cai, Dohun Kim, K. Sridhara, M. Fuhrer. 2012
745 citations recorded by the source corpus.
We fabricate MoS2 field effect transistors on both SiO2 and polymethyl methacrylate (PMMA) dielectrics and measure charge carrier mobility in a four-probe configuration. For multilayer MoS2 on SiO2, the mobility is 30–60 cm2/Vs, relatively independent of thickness (15–90 nm), and most devices exhibit unipolar n-type behavior. In contrast, multilayer MoS2 on PMMA shows mobility increasing with thickness, up to 470 cm2/Vs (electrons) and 480 cm2/Vs (holes) at thickness ∼50 nm. The dependence of the mobility on thickness points to a long-range dielectric effect of the bulk MoS2 in increasing mobility.
Subfields: Biomedical Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/d3d250e732e97f6367e87a0fbb01b4abddc478af
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Biomedical Engineering
- A. Castellanos-Gómez
- Herre S. J. van der Zant
- Filippo Giubileo
- G. Steele
- Giuseppe Luongo
- L. Iemmo
- M. Buscema
- Tobias Foller
In Materials Chemistry
- A. Castellanos-Gómez
- G. Steele
- Herre S. J. van der Zant
- M. Buscema
- Filippo Giubileo
- Giuseppe Luongo
- L. Iemmo
- Gwan‐Hyoung Lee
Citations in the corpus
- Few-layer MoS2: a promising layered semiconductor. (2014, background): “This large enhancement in the mobility was explained to be due to the smooth PMMA substrate with no chemical bonding.(120)”
- 2D semiconducting materials for electronic and optoelectronic applications: potential and challenge (2020, background): “[24] Bao W, Cai X, Kim D, Sridhara K and Fuhrer M S 2013 High”
- The effect of the substrate on the Raman and photoluminescence emission of single-layer MoS2 (2013, background): “Within this class of materials, molybdenum disulfide (MoS2) has a fairly high in-plane mobility[1, 2], a large Seebeck coefficient[3], remarkable mechanical properties[4-6] and a large and direct bandgap(single layer: 1.”