材料科学
纳米柱
光学
非晶硅
光电子学
硅
吸收(声学)
晶体硅
纳米技术
物理
纳米结构
复合材料
作者
Ishwor Koirala,Chul‐Soon Park,Sang‐Shin Lee,Duk‐Yong Choi
出处
期刊:Chinese Optics Letters
[Shanghai Institute of Optics and Fine Mechanics]
日期:2019-01-01
卷期号:17 (8): 082301-082301
被引量:14
标识
DOI:10.3788/col201917.082301
摘要
Angle tolerant transmissive subtractive color filters incorporating a metasurface exploiting hydrogenated amorphous silicon nanopillars (NPs) on a glass substrate were proposed and demonstrated. The achieved transmission efficiency ranged from 75% to 95% at off-resonance wavelengths. For an NP resonator, electric and magnetic-field distributions in conjunction with absorption cross-sections were investigated to confirm a resonant transmission dip, which is primarily governed by the absorption resulting from simultaneous excitation of magnetic and electric dipoles via Mie scattering. The proposed devices exhibit higher angular tolerance and lower crosstalk for the absorption spectra and, therefore, are applicable with photodetectors, image sensors, and imaging/display devices.
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