Perc component efficiency

How efficient are PERC solar cells?

Our best screen- printed PERC solar cell reached 22.04% efficiency while the best cell batch showed a very narrow efficiency distribution. A detailed electrical and optical loss analysis of those industrial type high efficiency PERC solar cells is carried out which enables further optimization and strategic improvements.

Is there a pathway to increase PERC cell efficiency?

From our experimental study and observed cell parameter improvements, we show a pathway for the increase in PERC cell efficiency. This has many similarities to the pathways suggested by Min et al. (2017), which was based on simulation and modelling.

How efficient is the PERC structure in mass production?

Based on the most recent published experimental results, we find that the PERC structure is able to reach about 24% cell efficiency in mass production by an ongoing sequence of incremental improvements.

What is the conversion efficiency of PERC cells?

The full-area Al-BSF with Seff,rear around 400 cm/s and Rrear around 65% limited the conversion efficiency of Al-BSF cells to about 18.5%. Due to the dielectric rear passivation, PERC cells exhibited a much lower Seff,rear around 50 cm/s and a higher Rrear around 90% and hence demonstrated conversion efficiencies close to 20%.

Does PERC improve efficiency?

This paper investigated the efficiency gains experimentally achieved in our lab with several industrially-feasible PERC improvements, leading from a baseline PERC efficiency of 20.7% to improved PERC devices with 21.9% efficiency.

What is the difference between PERC & B PERC+ solar cells?

Typical scanning electron microscope (SEM) images of locally alloyed aluminum contacts of a PERC and b PERC+ solar cells. Whereas the local Al contacts of PERC cells often show voids and a thin back surface field (BSF), PERC+ cells exhibit filled contacts and a deep BSF.