Inventors:
Laura Anne Clark - Brighton CO, US
Tammy Jane Lucas - Highlands Ranch CO, US
Wyatt Keith Metzger - Louisville CO, US
Samuel H. Demtsu - Thornton CO, US
David Joseph Dickerson - Thornton CO, US
Laura Jean Wilson - Peyton CO, US
Mehran Sadeghi - Orpington, GB
Assignee:
PRIMESTAR SOLAR, INC. - Arvada CO
International Classification:
H01L 31/18
Abstract:
Methods for preparing an exposed surface of a p-type absorber layer of a p-n junction for coupling to a back contact in the manufacture of a thin film photovoltaic device are provided. The method can include: applying a treatment solution onto the exposed surface defined by the p-type absorber layer of cadmium telluride; and annealing the device with the p-type absorber layer in contact with the treatment solution to form a tellurium-enriched region in the p-type absorber layer at the exposed surface. The treatment solution comprises a chlorinated compound component that is substantially free from copper, a copper-containing metal salt, and a solvent.