Indium tin oxide nanowhisker morphology control by vapour-liquid-solid glancing angle deposition

Nanotechnology
A L BeaudryMichael J Brett

Abstract

A new growth technique for indium tin oxide nanowhiskers with increased control over feature size and spacing is reported. The technique is based on a unique combination of self-catalysed vapour-liquid-solid (VLS) growth and glancing angle deposition (GLAD). This VLS-GLAD technique provides enhanced control over nanowhisker morphology as the effect of typical VLS growth parameters (e.g. flux rate, temperature) is amplified at large deposition angles characteristic of GLAD. Spatial modulation of the collimated growth flux controls trunk width, number and orientation of branches, and overall nanowhisker density. Here we report the influence of growth conditions (including deposition angle, flux rate, nominal pitch and substrate temperature) on nanowhisker morphology, with specific focus on the effect of large deposition angles. Sheet resistance and transmission of the films were measured to characterize their performance as transparent conductive oxides. Hybrid nanostructured films grown in this study include high surface area nanowhiskers protruding from a conductive film, ideal for transparent conductive electrode applications.

References

Feb 12, 2009·ACS Nano·Fan Yang, Stephen R Forrest
Dec 17, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Kathleen M KrauseMichael J Brett
Dec 4, 2010·Chemical Communications : Chem Comm·Christophe RenaultBenoît Limoges
Jan 19, 2011·Nanotechnology·David A RiderKenneth D Harris
Feb 9, 2011·ACS Applied Materials & Interfaces·Man Kin FungWai Kin Chan

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Citations

Mar 19, 2014·Nano Letters·Allan L BeaudryMichael J Brett
May 6, 2015·ACS Applied Materials & Interfaces·Julián Parra-BarrancoAgustín R González-Elipe
Mar 24, 2015·Chemical Communications : Chem Comm·A ForgetV Balland
Mar 23, 2019·Scientific Reports·Qiang LiFeng Yun
Oct 9, 2020·Nanomaterials·Manel LópezFrancesc Teixidor

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