Chemically microsurface-sphericizing on diamond wire-sawn multi-crystalline silicon wafers by metal-assisted chemical etching and rounding etching
| Autor: | Lang Zhou, Fayun Zhang, Jie Sun, Xiaoying Zhou, Jinbing Zhang, Yulong Liu, Liang He |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Fabrication Silicon Renewable Energy Sustainability and the Environment business.industry 020209 energy chemistry.chemical_element Diamond 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Isotropic etching chemistry Etching (microfabrication) Electrode 0202 electrical engineering electronic engineering information engineering engineering Optoelectronics General Materials Science Wafer Crystalline silicon 0210 nano-technology business |
| Zdroj: | Solar Energy. 220:1032-1039 |
| ISSN: | 0038-092X |
| DOI: | 10.1016/j.solener.2021.01.064 |
| Popis: | The combination processes of metal-assisted chemical etching (AgNO3 + HF + H2O2) and rounding etching (HNO3 + HF + H2O) were used for the texturization of diamond wire sawn (DWS) multi-crystalline silicon (mc-Si) wafers. The evolution of texture structure on the DWS mc-Si wafers was investigated in detail. The chemically microsurface-sphericizing (CMS) textures, which were nearly smooth spherical structure with a size of approximately 2–3 μm, were fabricated successfully on the DWS mc-Si wafers with the combination processes. Compared with the conventional metal-assisted chemical etching (MACE) textures, the CMS textures were improved on surface recombination and the filling of electrode, thereby boosting the electrical performance of the solar cells and the cell-to-module (CTM) loss at the module end. These CMS textures resulted in an increase in the output power of the photovoltaic module by 0.047 W per cell. The fabrication of these CMS textures may be easily scaled up in the photovoltaic production line. |
| Databáze: | OpenAIRE |
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