| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6456777 | Solar Energy Materials and Solar Cells | 2017 | 6 Pages |
â¢Conversion efficiency of 26.6% achieved by heterojunction back contact (HJ-IBC) solar cell.â¢This result was obtained using CZ silicon wafer.â¢0.3% absolute improvement in efficiency from the previous record is mainly driven by low series resistance.â¢As further development from 26.6%, pseudo FF of 86.6% is obtained from SunsVOC of the newly developed HJ-IBC cell.
We have developed heterojunction interdigitated back contact solar cell with conversion efficiency of 26.6% (designated area: 180Â cm2) independently confirmed by Fraunhofer Institute for Solar Energysystem Callab. Compared to our previous record efficiency (26.3%), the 0.3% absolute improvement can be regarded as ~10% reduction of remaining losses to the theoretical limit (~ 29%). We discuss the analyzed cell properties together with our recent progress to predict how far we can go in reducing the remaining losses in silicon photovoltaic.
