Characteristics of silicon nano-pillars fabricated by nano-sphere lithography and metal assisted chemical etching
Materials Science in Semiconductor Processing, 2022•Elsevier
Silicon nano-pillars (SiNPs) array can be fabricated by top-down approach on silicon wafer
by combining nano-sphere lithography (NSL) with metal assisted chemical etching (MACE).
The height of SiNPs is controlled by etching time while their diameter is tailored by NSL. In
the fabrication process, the 235 nm silica nano-spheres (SNs) are assembled into
hexagonally close-packed monolayer by drop-coating method on slanted substrate with
assistance of infrared irradiation prior to size reduction by HF vapor etching. Structural …
by combining nano-sphere lithography (NSL) with metal assisted chemical etching (MACE).
The height of SiNPs is controlled by etching time while their diameter is tailored by NSL. In
the fabrication process, the 235 nm silica nano-spheres (SNs) are assembled into
hexagonally close-packed monolayer by drop-coating method on slanted substrate with
assistance of infrared irradiation prior to size reduction by HF vapor etching. Structural …
Abstract
Silicon nano-pillars (SiNPs) array can be fabricated by top-down approach on silicon wafer by combining nano-sphere lithography (NSL) with metal assisted chemical etching (MACE). The height of SiNPs is controlled by etching time while their diameter is tailored by NSL. In the fabrication process, the 235 nm silica nano-spheres (SNs) are assembled into hexagonally close-packed monolayer by drop-coating method on slanted substrate with assistance of infrared irradiation prior to size reduction by HF vapor etching. Structural morphology of the fabricated SiNPs is analysed by field effect scanning electron microscopy (FESEM) and high resolution transmission electron microscopy (HRTEM). Optical characteristics such as reflectance, photo-luminescence (PL) at room temperature, and raman scattering enhancement are comprehensively investigated.
Elsevier
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