Fabrication of textured silicon solar cell using microlens as anti-reflection layer

Abstract

This paper presents facile, reproducible softlithographic technique for fabricating textured crystalline silicon solar cell with hexagonally close-packed hemispherical arrays using ordered polymeric microspheres. Close-packed monolayers of polymer microspheres were deposited on flat cleaned glass substrate using spin-casting technique. The relief structure of highly ordered microspheres successfully generated their negative replica of elastomers. Hemispherical microlens arrays were molded by dispensing and curing liquid ultraviolet-curable photopolymers into the negative replica on crystalline silicon solar cell module. Sub-micrometer scaled microlens with uniform, cleaned surface morphology were easily reproduced by using the prepared molds, without multi-step engineering processes. The microlens-coated crystalline silicon solar cell showed additional increment of 1% in solar cell efficiency, compared to that of SiN x anti-reflection coated one, as well as remarkable decrease of reflectance in SiNx-uncoated solar cell.

Feasibility of Adding Antireflective Coating Foil Made from Nanoscale‐Patterned Optical Disk Templates on Industrial Silicon Photovoltaics

“…This improvement in efficiency is among the highest than that obtained in a previous study using PDMS ARC. [ 32–36 ]…”

“…This improvement in efficiency is among the highest than that obtained in a previous study using PDMS ARC. [32][33][34][35][36] To assess how the light source influences the retrofitted c-Si cell, the device was tested under different illumination conditions (Figure 5c). Four different light sources were employed, namely indoor light, studio box, outdoor light, and Xenon lamp (spectral data provided in Figure S4, Supporting Information).…”

Effects of Microlens Array Lens Size on Sub-Aperture Images in Light Field Cameras

“…Recently, microlens arrays (MLA) have been adapted for a range of applications based on their tiny size, light weight, and suitability for mass production by a range of fabrication techniques. For instance, MLAs can be used to concentrate light [1] for high-efficiency solar cells. MLAs are also widely used in fiber communication systems [2,3], leveraging their condensed arrangements to provide mass storage capacity.…”