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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Solar Cell Silicon
Presentation Title A Low-cost and Novel Strategy for Inverted Pyramid Arrays Texturing of DWS mc-Si Wafers
Author(s) Shaoyuan Li, Yuxin Zou, Fengshuo Xi, Wenhui Ma, Kuixian Wei
On-Site Speaker (Planned) Shaoyuan Li
Abstract Scope The depressing texturation and stubborn directional saw marks on diamond wire sawing mc-Si wafers lead to severe limitations for the mass application of DWS technology in PV market. Herein, a simple and low-cost copper-assisted chemical etching method was presented to fabricate large-area and uniform inverted pyramid arrays on DWS mc-Si wafers. The results display that the textured morphology of silicon wafer were greatly influenced by various metal species. Compared with the silicon nanowires structure introduced by Ag-assisted etching, the large area inverted pyramid introduced by nano Cu-assisted etching can more perfectly balance antireflection and surface passivation. The resulting inverted pyramid structure is the most uniform and the average reflectivity of textured sample decrease from 41.8% to ~5% in the wavelength range of 300~1100 nm. The superior anti-reflection performance and excellent saw marks elimination ability show a huge potential application in high-efficiency solar cells based on DWS mc-Si wafers.
Proceedings Inclusion? Planned:


Boron Removal from Ferrosilicon Alloy via Slag Treatment
Crystal Growth Mechanism of Si in Hypereutectic Al-Si Melt during the Electromagnetic Directional Solidification
Enhancement of Efficiency in Nanostructured-Si Solar Cells by Employing Doped-graphene Transparent Conductive Electrodes
Influence of Chemical and Heat Treatment on the Properties of Disi Raw Sandstones in Jordan
K-17: High Temperature Pressure Filtration Applying for Separation of Silicon and Liquation Agent
K-18: Leaching of Indium from ITO Present in Amorphous Silicon Photovoltaic Modules
K-19: The Effect of Rapid Heat Treatment on Crystal Defect Evolution and Electrical Properties of the Original High Efficient Polycrystalline Silicon
Removal Impurities from Metallurgical Silicon by Slag Treatment Combined with Acid Leaching
Review of Solar Silicon Recycling
Solar Silicon by Direct Carbothermic Reduction - Review and Outlook
Structure Nature of Boron Removal from Silicon in Slagging Refining: A Raman Spectroscopy and NMR Spectroscopy Study
The Mechanism of Boron Removal from Silicon Alloy by Electric Field Using Slag Treatment
Thermo-Calc of the Phase Diagram of Calcium Silicon (Ca-Si) System
Thermo-Calc of the Phase Diagram of the Fe-Si System
Three-dimensional Crystal-plasticity based Model for Intrinsic Stresses in Multi-junction Photovoltaic

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