One-Step Fabrication of Inverted Pyramid Textured Silicon Wafers via Silver-Assisted Chemical Etching Combing with Synergism of Polyvinylpyrrolidone (PVP)

Inverted pyramid-texturing of silicon surface has been proven to have great application potential in solar cells. In this paper, we utilized Ag-assisted chemical etching (Ag–ACE) technology combing with polyvinylpyrrolidone (PVP) fabricate an inverted pyramid textured Si surface. We call it Ag@PVP–ACE. The effect different experimental parameters on results was observed. show that the microstructure exhibited two states as concentration NH4HF2 and PVP changed: polishing texturing. Meanwhile, found pyramids easier form at high temperature low H2O2 system. Consequently, compared structures fabricated by nanostructure rebuilding (NSR) Ag@PVP–ACE, consider Ag@PVP–ACE could become a viable strategy for fabricating wafers cells production.