Doping-free bandgap tuning in one-dimensional Magnéli-phase nanorods of Mo4O11

Nanoscale
Duy Van PhamYuan-Ron Ma

Abstract

We synthesized one-dimensional (1D) Magnéli-phase nanorods of Mo4O11 using the hot filament metal-oxide vapor deposition technique. The 1D Magnéli-phase Mo4O11 nanorods synthesized at 1000, 1050, 1100, 1150, and 1200 °C contain varying combinations of two orthorhombic (α) and monoclinic (η) phases, and various mixtures of Mo(4+), Mo(5+) and Mo(6+) cations, while those synthesized at a higher temperature look bluer. The shifts of the transmittance maximum and absorbance minimum of the 1D Magnéli-phase Mo4O11 nanorods are inversely and linearly proportional to the elevated temperature, verifying that the bandgaps (Eg) are inversely proportional to the elevated temperature. The bandgap (Eg) of the 1D Magnéli-phase Mo4O11 nanorods can be tuned by simply controlling the synthesis temperature without doping with other materials, giving the 1D Magnéli-phase Mo4O11 nanorods good potential for use in optoelectronic nanodevices and bandgap engineering.

References

Oct 24, 2012·Advanced Materials·Sivacarendran BalendhranKourosh Kalantar-zadeh
May 8, 2013·Journal of Nanoscience and Nanotechnology·Rupesh S DevanYuan-Ron Ma
Nov 15, 2013·Nature·Martin Maldovan
Feb 18, 2015·Nature Communications·Yu Li HuangAndrew T S Wee
Sep 2, 2015·Scientific Reports·X Y LiuD Z Shen
Sep 17, 2015·Journal of Nanoscience and Nanotechnology·A ChithambararajA Chandra Bose

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Citations

Mar 31, 2016·ACS Applied Materials & Interfaces·Ranjit A PatilYuan-Ron Ma
Aug 25, 2018·Nanoscale·Fahmida RahmanSivacarendran Balendhran
Jun 22, 2019·Advanced Materials·Dhinesh Babu VelusamyHusam N Alshareef
Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Nikolay GerasimchukFrank Röminger

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