Solexel, Inc.

Ob Realty, LLC

Solene Coutant

Mehrdad M Moslehi

Virendra V Rana

Heather Deshazer

Pawan Kapur

Benjamin Rattle

Sean M Seutter

Pranav Anbalagan

Anand Deshpande

Swaroop Kommera

The present application provides effective and efficient structures and methods for the formation of solar cell base and emitter regions and passivation layers using laser processing. Laser absorbent passivation materials are formed on a solar cell substrate and patterned using laser ablation to form base and emitter regions. Laser damage to the solar cell substrate is removed using an etch.

Aluminum oxide passivation and damage removal for solar cells

Methods for improving the light trapping characteristics of crystalline silicon solar cells are provided. In one embodiment, the backside surface of a crystalline silicon solar cell substrate is textured with a pulsed laser beam. The textured backside surface of the crystalline silicon solar cell substrate is then annealed to remove damage from the laser texturization process.

Systems and methods for enhanced light trapping in solar cells

Annealing solutions providing damage-free laser patterning utilizing auxiliary heating to anneal laser damaged ablation regions are provided herein. Ablation spots on an underlying semiconductor substrate are annealed during or after pulsed laser ablation patterning of overlying transparent passivation layers.

Annealing for damage free laser processing for high efficiency solar cells

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Milpitas, CA, United States of America

Solene Coutant