Large Area Fabrication of Semiconducting Phosphorene by Langmuir Blodgett Assembly

Abstract

Although a considerable number of solvent based methodologies have been developed for exfoliating black phosphorus, so far there are no reports on controlled organization of these exfoliated nanosheets on substrates. Here, for the first time to the best of our knowledge, a mixture of N-Methyl-2-pyrrolidone (NMP) and deoxygenated water is employed as a subphase in Langmuir Blodgett (LB) trough for assembling the nanosheets followed by their deposition on substrates and studied its field effect transistor (FET) characteristics. Electron microscopy reveals the presence of densely aligned, crystalline, ultra-thin sheets of pristine phosphorene having lateral dimensions larger than hundred of microns. Furthermore, these assembled nanosheets retain their electronic properties and show a high current modulation of 10^4 at room temperature in FET devices. The proposed technique provides semiconducting phosphorene thin films that are amenable for large area applications.

arXiv comment19 pages, 4 figures in main paper, 7 supporting figures

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Cited by in corpus (5)

• High yield synthesis and liquid exfoliation of two-dimensional belt like hafnium disulphide
• Order out of Randomness : Self-Organization Processes in Astrophysics
• Searching for the optimum conditions for silicene growth by calculations of the free energy
• Calculating the free energy of 2D materials on substrates
• Temperature Dependence of the Response Functions of Graphene: Impact on Casimir and Casimi-Polder Forces in and out of Thermal Equilibrium