Study on weak-light photovoltaic characteristics of solar cell with a microgroove lens array on glass substrate
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-02-10 |
| Journal | Optics Express |
| Authors | Ping Li, Jin Xie, Jian Cheng, Yu Ning Jiang |
| Institutions | South China University of Technology |
| Citations | 26 |
Abstract
Section titled āAbstractāMicrogroove lens with 500-800 Āµm in depth is proposed on the glass substrate of thin-film solar cell. The objective is to improve photovoltaic characteristics under weak-light illumination. First, the micro-optical characteristics were theoretically studied in connection with micro-lens structure; then a diamond micro-grinding was employed to fabricate microgroove lens; finally, indoor conversion efficiency and outdoor electrical generation were measured. It is shown that the 800-Āµm-depth microgroove lens is able to absorb and scatter the inclined light to solar cell for improving weak-light conversion efficiency. It enhances the electricity generation by 118% and 185% in cloudy and overcast days, respectively.