Method of absorber surface repairing by solution process
AssigneeTSMC Solar Ltd.
InventorShih-Wei CHEN
Life of this patent
Estimating the term…
Abstract
Methods and systems for repairing oxidation of CIGS surfaces during manufacture of a CIGS solar cell are generally disclosed. Oxidation of an absorber reduces the photoluminescence intensity of the CIGS surface. The absorber is immersed in a reduction tank having a reducing reagent therein. The reducing reagent reverses the oxidation of the CIGS absorber, increasing the interface quality and corresponding photoluminescence intensity. After reversing the oxidation, a buffer layer is deposited on the CIGS absorber to prevent further surface oxidation.
Claims17
A method for manufacturing a photovoltaic device comprising the steps of:
- forming an absorber layer above a substrate;
- immersing the absorber layer in a reduction reagent;
- and
- forming a buffer layer on the absorber layer.
A method of treating an absorber, comprising the steps of:
- providing a reduction reagent tank comprising a reduction reagent;
- and
- immersing substrate having a previously oxidized absorber in the reduction reagent for a predetermined time period.
17-20. (canceled)
Dependencies are inferred from the claim text.