Abstract
We report a controllable wet method for effective decoration of 2-dimensional (2D) molybdenum disulfide (MoS 2) layers with Au nanoparticles (NPs). Au NPs can be selectively formed on the edge sites or defective sites of MoS 2 layers. The Au-MoS 2 nano-composites are formed by non-covalent bond. The size distribution, morphology and density of the metal nanoparticles can be tuned by changing the defect density in MoS 2 layers. Field effect transistors were directly fabricated by placing ion gel gate dielectrics on Au-decorated MoS 2 layers without the need to transfer these MoS 2 layers to SiO 2 /Si substrates for bottom gate devices. The ion gel method allows probing the intrinsic electrical properties of the as-grown and Au-decorated MoS 2 layers. This study shows that Au NPs impose remarkable p-doping effects to the MoS 2 transistors without degrading their electrical characteristics.
Original language | English (US) |
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Article number | 1839 |
Journal | Scientific Reports |
Volume | 3 |
DOIs | |
State | Published - 2013 |
Externally published | Yes |
Bibliographical note
Funding Information:This work is supported by SUTD-MIT international design center fund to Dr Yang Hui Ying. L.J. Li thanks the support from Academia Sinica (IAMS and Nano program) and National Science Council Taiwan (NSC-99-2112-M-001-021-MY3). S.F. Yu and L.M. Jin thank PolyU grant (Grant No. G-YJ73).
ASJC Scopus subject areas
- General