Multicolor generation using silicon nanodisk absorber

Abstract

Articles you may be interested inFabrication of transferrable, fully suspended silicon photonic crystal nanomembranes exhibiting vivid structural color and high-Q guided resonance

Highly reflective subtractive color filters capitalizing on a silicon metasurface integrated with nanostructured aluminum mirrors

“…The spectra were monitored to exhibit a drastic suppression in reflection at the resonance wavelengths of 489 nm, 552 nm, and 609 nm, corresponding to the desired subtractive colors of yellow, magenta, and cyan, respectively. A high off‐resonance reflection surpassing 70% alongside a relatively narrow full‐width‐at‐half‐maximum bandwidth of ∼55 nm was achieved, which is noteworthy compared with the previous approaches that rely on a Si nanostructure, where the spectra are inclined to exhibit multiple resonance dips in the visible band or give a low reflection below 40% . To estimate the color purity at a given brightness, the related chromaticity coordinates were calculated from the simulated and the measured spectra and then mapped on the standard International Commission on Illumination (CIE) 1931 chromaticity diagram, as shown in Fig.…”

“…In view of its high refractive index of n = ∼4.0, Si is regarded as an eminent candidate for constructing a variety of metasurface. Recently, several reflection type structural color filters were reported based on Si, which can readily integrate into other optical/electrical devices , . The approach that taps into a Si metasurface is anticipated to exhibit a good stability and compactness , compared with the conventional Si nanowires of an extremely high aspect ratio .…”

“…For the transmission‐type filter based on a Si metasurface, it can provide higher efficiency beyond 90% than its plasmonic counterpart, which suffers from high conduction loss in the visible band . However, a reflection‐type filter, which capitalizes on Si metasurfaces formed on a Si substrate , may exhibit lower efficiency compared to its plasmonic counterpart , due to the low reflectivity of Si. It is resultantly evident that the crosstalk worsens while the color contrast is degraded.…”

2D silicon nanopillars arrays for photonics

“…A compact multispectral imaging system used vertical silicon nanowires was demonstrated in [17]. Si NPs with low aspect ratio was investigated too [14][15][16]. We investigate the Si NPs with an average aspect ratio [18,19].…”

Спектральные Характеристики Отражения Микромассивов Кремниевых Нанопилларов-=sup=-*-=/Sup=-

“…В последнее время такая методика травления нано-пилларов через маску из негативного резиста получила распространение [17] еще и за счет своей простоты, так как не требуется удалять резистивную маску перед оптическими измерениями. Резистивная маска прозрачна для оптического излучения видимого и ближнего ИК диапазонов [18].…”