Synthesis of α-MoO3 nanofibers for enhanced field-emission properties

Sandeep Kumar Singh Patel1*, Khemchand Dewangan2*, Simant Kumar Srivastav3, Narendra Kumar Verma1, Paramananda Jena1, Ashish Kumar Singh1, N. S. Gajbhiye3

1School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University) Varanasi 221005, India

2Department of Chemistry, Indira Gandhi National Tribal University, Amarkantak 484886, India

3Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India

Adv. Mater. Lett., 2018, 9 (8), pp 585-589

DOI: 10.5185/amlett.2018.2022

Publication Date (Web): Jun 14, 2018

E-mail: sandybhu1@rediffmail.com

Abstract


One-dimensional α-MoO3 nanofibers of 280–320 nm diameters were synthesized by a hydrothermal method. The morphologies and compositions of as-synthesized α-MoO3 nanofibers have been characterized by X-ray powder diffraction, Raman spectroscopy, and field-emission scanning electron microscopy. X-ray photoelectron spectroscopy showed the predominantly 6+ oxidation state with a small percentage of reduced δ+ (5 < δ < 6) oxidation state. The field-emission properties of α-MoO3 nanofibers show a lower turn-on electric field of 2.48 V µm-1 and threshold electric field of 3.10 V µm-1. The results suggest that the α-MoO3 nanofibers are promising candidate for efficient and high-performance field-emission devices. 

Keywords

Nanofibers, molybdenum oxide, hydrothermal method, field emission properties.

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