The Effect of Buried Contacts Shading on the Performance of Textured Silicon Solar Cells

In this paper we introduce a possible method for forming buried contacts by means of chemical solutions. Its effectson the performance of the monocrystalline and multicrystalline silicon solar cells are studied. The shading effect ofburied contacts formed by this method is investigated and is compared to the shading effect of those buried contactsformed by laser. Usually buried contacts are formed by means of laser. This process is expensive and time consuming.Chemical methods are not only less expensive, but also applicable on large area solar cells. Moreover simulationstudies show that in the presence of surface texturization, chemical methods provide higher efficiency improvementthan laser method. This may be attributed to their lower shading effects. Simulation results also show that buriedcontacts are responsible for about 0.3-0.6% and surface texturization about 0.5-2% increase in the overall efficiencydepending on the solar cells material morphology and methods of texturization.

کلیدواژه ها:

Buried contacts ، Silicon solar cells ، monocrystalline and multicrystalline silicon ، silicon etching by means of alkaline and acidic solutions