Solution-Processed Aluminum Nanogratings for Wire Grid Polarizers

摘要

The wire grid polarizer (WGP) consisting of parallel metal nanogratings is anrnattractive alternative to conventional polarizers because it offers thin layerrnthickness, easy integration capability, and outstanding chemical and thermalrnstability. In this report, a facile solution process is proposed for fabricatingrnAl WGPs. High-aspect-ratio Al nanostructures are formed in a 1D nanoimprintedrntemplate by electroless plating. Because of the geometrically irreversiblerndeposition and wet etching processes on the nanotemplate, only thernembedded Al nanogratings are retained. The solution-processed Al nanostructuredrnWGP with a line width of 60 nm and a height of 150 nm exhibitsrnan average extinction ratio of 104 and transmittance of 52.3% in the visiblernwavelengths.