Hydrophobic coating of GaAs surfaces with nanostructured ZnO

N. Perkas; G. Amirian; O. Girshevitz; A. Gedanken

doi:10.1016/j.matlet.2016.03.129

Hydrophobic coating of GaAs surfaces with nanostructured ZnO

N. Perkas, G. Amirian, O. Girshevitz, A. Gedanken

Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Avoiding dew from the exterior of solar panels is of importance since this may reduce the number of photons hitting the surface. The hydrophilic/hydrophobic coating of GaAs surface with nanostructured ZnO was done by the ultrasound assisted method with the addition of templating agents such as polyvinyl pyrrolidone (PVP), polyethylene glycol (PEG), dodecylamine (DDA), or hexatetramethylene tetramine (HMTA). The best hydrophobic properties and contact angle of 141°were obtained when DDA stabilized ZnO layers were coated on the GaAs. The stability to the scotch-tape test and to outdoor exposure for at least 2 weeks was demonstrated. The XRD, SEM and AFM studies revealed the formation of hierarchical structure consisting of ZnO nanoparticles. The water repulsion effect is explained as being due to the high roughness of the pyramidal shaped layer.

Original language	English
Pages (from-to)	101-105
Number of pages	5
Journal	Materials Letters
Volume	175
DOIs	https://doi.org/10.1016/j.matlet.2016.03.129
State	Published - 15 Jul 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V. Allrightsreserved.

Funding

The work was carried out as part of Project NOFAR 12410 sponsored by the Ministry of Commerce and Industry of Israel . The authors thank the management for their financial and moral support.

Funders	Funder number
Ministry of Commerce and Industry of Israel

Keywords

Coating
Hydrophilic
Hydrophobic
Nanoparticles
Sonochemistry

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10.1016/j.matlet.2016.03.129

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abstract = "Avoiding dew from the exterior of solar panels is of importance since this may reduce the number of photons hitting the surface. The hydrophilic/hydrophobic coating of GaAs surface with nanostructured ZnO was done by the ultrasound assisted method with the addition of templating agents such as polyvinyl pyrrolidone (PVP), polyethylene glycol (PEG), dodecylamine (DDA), or hexatetramethylene tetramine (HMTA). The best hydrophobic properties and contact angle of 141°were obtained when DDA stabilized ZnO layers were coated on the GaAs. The stability to the scotch-tape test and to outdoor exposure for at least 2 weeks was demonstrated. The XRD, SEM and AFM studies revealed the formation of hierarchical structure consisting of ZnO nanoparticles. The water repulsion effect is explained as being due to the high roughness of the pyramidal shaped layer.",

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AU - Amirian, G.

AU - Girshevitz, O.

AU - Gedanken, A.

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KW - Nanoparticles

KW - Sonochemistry

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Hydrophobic coating of GaAs surfaces with nanostructured ZnO

Abstract

Bibliographical note

Funding

Keywords

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