Constructing Submicron-Texture on Diamond-Wire-Sawn Multi-Crystalline Silicon Solar Cells via Copper Catalyzed Chemical Etching
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2017-01-01 |
| Journal | 33rd European Photovoltaic Solar Energy Conference and Exhibition |
| Authors | Shuai Zou, Fei-Long Hu, K. Chen, Chengfeng Pan, Ti Wang |
Abstract
Section titled āAbstractāMass production of diamond-wire-sawn multi-crystalline silicon (DWS mc-Si) solar cells reach a tipping point with the maturement of metal catalyzed chemical etching (MCCE) technique. However, nano-textured DWS mc-Si solar cells based on Ag-MCCE still suffer from the certain saw-mark remains and the color differences among grains, and also slightly decrease of open-circuit voltage (Voc). Unoriented etching of Cu-MCCE not only depress the saw marks and the color differences, but also result in random shallow pits, which acted as artificial defects to be easily converted into a submicron-texture by using a conventional HNO3/HF etching. For the first time, we demonstrate that the efficiency of DWS mc-Si solar cells with Cu-MCCE process is over 19%, especially with improved Voc due to better surface passivation. Thereby, cost-effective Cu-MCCE is of great potential in PV industry.