High-Efficiency Silicon Inverted Pyramid-Based Passivated Emitter and Rear Cells

Surface, Emitter and Bulk Recombination in Silicon and Development of Silicon Nitride Passivated Solar Cells

Recombination within the bulk and at the surfaces of crystalline silicon has been investigated in this thesis. Special attention has been paid to the surface passivation achievable with plasma enhanced chemical vapour deposited (PECVD) silicon nitride (SiN) films due to their potential for widespread use in silicon solar cells. The passivation obtained with thermally grown silicon oxide (SiO2) ...

Diffusion-based model of local Al back surface field formation for industrial passivated emitter and rear cell solar cells

In this work, the back surface field (BSF) formation of locally alloyed Al paste contacts employed in recent industrial passivated emitter and rear cell solar cell designs is discussed. A predictive model for resulting local BSF thickness and doping profile is proposed that is based on the time dependent Si distribution in the molten Al paste during the firing step. Diffusion of Si in liquid Al...

Maskless inverted pyramid texturization of silicon

We discovered a technical solution of such outstanding importance that it can trigger new approaches in silicon wet etching processing and, in particular, photovoltaic cell manufacturing. The so called inverted pyramid arrays, outperforming conventional pyramid textures and black silicon because of their superior light-trapping and structure characteristics, can currently only be achieved using...

Synthesis of the Silicon Inverted Nano- Pyramid and Study of Their Self- Cleaning Behavior

In this paper, synthesis of inverted nano-pyramids on a single crystal silicon surface through a simple and cost-effective wet chemical method is surveyed. These structures were synthesized by MACE process using Cu as the assisted metal in the solution of copper nitrate, hydrogen peroxide and hydrofluoric acid for different etching times. FE-SEM images of the samples show that time is an import...

High efficiency n-type silicon solar cells featuring passivated contact to laser doped regions