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Abstract
Black silicon (b-Si) is of particular interest within the photovoltaic community due to its ability to texture diamond wire-sawn multicrystalline silicon wafers. In this work, we apply a deep dry-etched black silicon nanotexture, which possesses less than 1 % solar-weighted reflectance with no antireflection coating (ARC), to industrial Passivated Emitter and Rear Cells (PERC). Additionally, the cells are processed further into small solar modules, which are characterized by their electrical and optical performance. The fragile nanostructures remain intact during industrial cell and module fabrication, maintaining the excellent optical properties until the final product. We show that b-Si modules with a typical cover glass retain their performance until incident angles larger than 60°, whereas the heavily increased reflectance of acidic-textured modules decreases their efficiency already after a 30° tilt. Furthermore, at an incidence angle of 70°, the efficiency of b-Si modules has reduced only 7 %, while that of the acidic-textured equivalents has decreased more than 25 %. Hence, the excellent optical properties of ARC-free b-Si are maintained also at module level. The results demonstrate that deep dry-etched b-Si nanostructures are fully applicable to current industrial PERC production facilities.
Original language | English |
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Title of host publication | Proceedings of the 35th European Photovoltaic Solar Energy Conference and Exhibition |
Publisher | EU PVSEC |
Pages | 552-556 |
ISBN (Electronic) | 3-936338-50-7 |
DOIs | |
Publication status | Published - 2018 |
MoE publication type | B3 Non-refereed conference publication |
Event | European Photovoltaic Solar Energy Conference and Exhibition - SQUARE - Brussels Meeting Centre, Brussels, Belgium Duration: 24 Sept 2018 → 28 Sept 2018 Conference number: 35 https://www.photovoltaic-conference.com/ |
Conference
Conference | European Photovoltaic Solar Energy Conference and Exhibition |
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Abbreviated title | EU PVSEC |
Country/Territory | Belgium |
City | Brussels |
Period | 24/09/2018 → 28/09/2018 |
Internet address |
Keywords
- Incidence Angle
- Black Silicon
- Multicrystalline Silicon
- Passivated Emitter
- Rear Cell (PERC)
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Dive into the research topics of 'Industrial Applicability of Antireflection-Coating-Free Black Silicon on PERC Solar Cells and Modules'. Together they form a unique fingerprint.Projects
- 1 Finished
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Black silicon and defect engineering for highly efficient solar cells and modules, BLACK
Savin, H. (Principal investigator)
01/03/2015 → 28/02/2018
Project: Business Finland: Other research funding