Antireflection Enhancement by Composite Nanoporous Zeolite 3A-Carbon Thin Film

Nanomaterials (Basel). 2019 Nov 19;9(11):1641. doi: 10.3390/nano9111641.

Abstract

A straightforward and effective spin-coating technique at 120 °C was investigated for the deposition of a thin nanoporous layer with antireflection properties onto glass and indium tin oxide (ITO) coated glass. A mixture of zeolite 3A powder and high iodine value vegetable oil was deposited, creating a carbonic paste with embedded nanoporous grains. Experimental results evidenced excellent broadband antireflection over the visible-near-infrared wavelength range (450-850 nm), with a diffuse reflectance value of 1.67% and 1.79%. Structural and optical characteristics stabilized over time. The results are promising for the accessible and cost-effective fabrication of an antireflective surface for optoelectronic devices.

Keywords: antireflective coating; carbon; zeolite 3A.