This paper presents a fully-coupled 3D drift-diffusion simulation for the volume within pyramids of textured surface on silicon wafer to compute parameters needed solar-cell modeling. First, diffusion process is numerically simulated, resulting in nonuniform dopant concentration that higher at pyramid's peak and ridges. Results are presented quasi-Fermi potential, recombination, hole current as...

We demonstrated fabrication of black silicon with slanted nanocone array on both planar and 3D micro and meso scale structures produced by a high-throughput lithography-free oblique-angle plasma etching process. Nanocones with gradual change in height were created on the same piece of silicon. The relation between the slanted angle of nanocones and incident angle of directional plasma is experi...

A micropyramid structure was formed on the surface of a monocrystalline silicon wafer (100) using a wet chemical anisotropic etching technique. The main objective was to evaluate the performance of the etchant based on the silicon surface reflectance. Different isopropyl alcohol (IPA) volume concentrations (2, 4, 6, 8, and 10%) and different etching times (10, 20, 30, 40, and 50 min) were selec...

A combination of silicon anisotropic etch and mechanical hot embossing techniques is used to demonstrate the feasibility of manufacturing plastic micropyramids. These micropyramids have the desirable optical characteristics to enhance the brightness of LCD (liquid crystal displays) in battery-powered laptop computers, personal TVs and camcorders. Silicon mold inserts, 4-inch in diameter, are fi...

The transparency of silicon in the infrared region enables design nano/microstructures for implementation devices to harvest (IR) part solar spectrum. Herein we report...

We utilize plasma-enhanced chemical vapor deposition through a patterned silica mask for templated diamond growth to create optical resonators. The pyramid-shaped structures have quality factors Q up to 600, measured using confocal photoluminescence spectroscopy, and mode volumes V as small as 2:5ðk=nÞ for resonances at wavelengths k between 550 and 650 nm, and refractive index n, obtained usin...

We report on a study of the morphology of (100) silicon surfaces etched in aqueous alkaline solutions. It is shown that the formation of pyramidal hillocks during etching can be influenced in two different ways: by the presence of an oxidizing agent (ferricyanide or oxygen) in the etchant solution, or by etching under anodic bias. In both cases pyramid formation is suppressed without a signific...

Inverted pyramid-texturing of silicon surface has been proven to have great application potential in solar cells. In this paper, we utilized Ag-assisted chemical etching (Ag–ACE) technology combing with polyvinylpyrrolidone (PVP) fabricate an inverted pyramid textured Si surface. We call it Ag@PVP–ACE. The effect different experimental parameters on results was observed. show that the microstru...

Graphene/silicon (Gr/Si) Schottky junction solar cells have attracted extensive research interest due to their simple structure and potential low-cost. Surface texturing is an important part of high-efficiency cells. In this paper, the effects TMAH concentration, IPA concentration etching time on anti-reflection ability silicon pyramid array (SiPa) were systematically studied obtain uniform rel...