Numerical analysis of monocrystalline silicon solar cells with fine nanoimprinted textured surface

We investigated the surface reflectance of nanoimprinted textures on silicon. Zirconium oxide, which is a wide-bandgap inorganic dielectric material, was used as the texturing material. We performed several calculations to optimize the textures for the production of high-efficiency bulk-type monocry...

Full description

Saved in:
Bibliographic Details
Published in:Japanese Journal of Applied Physics 2017-02, Vol.56 (2), p.22301-022301
Main Authors: Yoshinaga, Seiya, Ishikawa, Yasuaki, Araki, Shinji, Honda, Tatsuki, Jiang, Yunjiang, Uraoka, Yukiharu
Format: Article
Language:English
Subjects:
Nanostructure
Photovoltaic cells
Reflectance
Reflectivity
Silicon
Solar cells
Surface layer
Texture
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We investigated the surface reflectance of nanoimprinted textures on silicon. Zirconium oxide, which is a wide-bandgap inorganic dielectric material, was used as the texturing material. We performed several calculations to optimize the textures for the production of high-efficiency bulk-type monocrystalline silicon solar cells. Our analysis revealed that nanoimprinted textured solar cells exhibit a lower reverse saturation current density than a solar cell with a conventional etched texture. It was also confirmed that the photocarrier generation rate for a solar cell with a submicron-scale nanoimprinted texture has little dependence on the texture shape. Furthermore, the weighted average reflectance of an optimized nanoimprinted textured solar cell was substantially reduced to 3.72%, suggesting that texture formation by nanoimprint lithography is an extremely effective technology for producing high-efficiency solar cells at a low cost.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.56.022301