Optimization of rear point contact geometry by means of 3-D numerical simulation

Abstract:

In this work three-dimensional (3-D) numerical simulations, validated by the experimental measurements of a reference cell, have been performed to optimize the rear contact geometry of a PERC-type solar cell, featuring a high sheet resistance (140 Ω/sq) phosphorus-doped emitter and a front-side metallization with narrow and highlyconductive electro-plated copper lines (40 μm wide) on lowly resistive Ti contacts. The simulation results show that an optimization of the rear point contact design potentially leads to an efficiency improvement of 0.68%abs compared to the reference cell.

Año de publicación:

2012

Keywords:

• PERC
• 3-D device simulation
• Electro-plated Cu contacts
• Si solar cells
• High sheet resistance emitter

Fuente:

scopus