Process simplifications in large area hybrid silicon heterojunction solar cells
| Autor: | Filip Duerinckx, A. Uruena, Richard Russell, Loic Tous, Alexis Michel, Emanuele Cornagliotti, Patrick Choulat, Monica Aleman, Jozef Szlufcik, Robert Gehlhaar, Stefano Nicola Granata, Twan Bearda |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment business.industry Metallurgy Oxide chemistry.chemical_element Heterojunction Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound Stack (abstract data type) chemistry law Solar cell Optoelectronics Wafer Crystalline silicon business Indium Common emitter |
| Zdroj: | Solar Energy Materials and Solar Cells. 142:66-74 |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2015.05.049 |
| Popis: | Recently, large area hybrid silicon heterojunction cells (SHJ) with nickel/copper (Ni/Cu) plated front contacts were shown to benefit from a simpler processing sequence than n-PERT cells featuring a boron diffused rear emitter. Hybrid refers here to the combination of a diffused front surface field (FSF) and a SHJ rear emitter. In this work, further process simplifications for such hybrid SHJ cells are evaluated. Based on reflectance and adhesion considerations, stacks of tin-doped indium oxide and copper (ITO/Cu) and chromium/silver (Cr/Ag) are tested as alternative to the previously chosen ITO/Ag rear contact stack. Using ITO/Cu/Al as rear contact stack, average efficiencies of 20.8±0.2% are presented on 6-inch wafers. We also demonstrate that the excimer laser annealing step previously employed to form nickel silicides at the front side can be skipped without comprising solder tab adhesion quality. |
| Databáze: | OpenAIRE |
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