Solar cell, photovoltaic module, and photovoltaic system

By setting subwavelength nano-light-trapping layers on the front, back, and sides of solar cells, the problem of low light utilization is solved, and multiple reflections and refractions of light are achieved, thereby improving photoelectric conversion efficiency and conversion efficiency.

CN224473670UActive Publication Date: 2026-07-07YANGTZE INSTITUTE FOR SOLAR TECHNOLOGY
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANGTZE INSTITUTE FOR SOLAR TECHNOLOGY
Filing Date
2025-07-07
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In existing technologies, placing nanostructures on the front or back of solar cells cannot effectively improve photoelectric conversion efficiency, resulting in limited light utilization.

Method used

Subwavelength nano-light-trapping layers are deposited on the front, back, and side surfaces of a solar cell. The gap width between adjacent light-trapping structures varies in the direction away from the substrate. The cells are prepared using atomic layer deposition, hydrothermal, and photothermal methods to form light-trapping structures with gradually varying refractive indices.

Benefits of technology

By extending the light propagation path through multiple reflections and refractions, the absorption and utilization rates of light are improved, enhancing the photoelectric conversion rate. In particular, the reflectivity is reduced on the sides, capturing more light and improving conversion efficiency.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224473670U_ABST
    Figure CN224473670U_ABST
Patent Text Reader

Abstract

The application provides a solar cell, a photovoltaic module and a photovoltaic system. The solar cell comprises: a solar cell body; a sub-wavelength nano light-trapping layer formed on at least part of the surface of the solar cell body, wherein the at least part of the surface comprises one or more of a front surface, a back surface and a side surface; the sub-wavelength nano light-trapping layer comprises a plurality of light-trapping structures; the width of the gap between adjacent light-trapping structures changes in the direction away from the substrate of the solar cell body; the sub-wavelength nano layer can be prepared on the front surface, the back surface and the side surface of the solar cell, so that the incident light is subjected to multiple reflections and refractions, the propagation path of the light is prolonged, the light absorption rate is improved, and the light utilization rate is improved.
Need to check novelty before this filing date? Find Prior Art