Method for preparing cigs inks without surfactant
AssigneeJenn Feng New Energy Co., Ltd.
InventorUen-Ren Chen
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Abstract
A method for preparing a CIGS ink without a surfactant or a binder is provided. In accordance with the method of the present invention, an initial CIGS mixture powder is obtained by mixing two component powder, three component powder or four component powder of copper, indium, gallium, and selenium in predetermined proportions. Then additional selenide powder is added and mixed into the initial CIGS mixture powder to form a final CIGS mixture powder. Then, a certain proportion of solvent is added into the final CIGS mixture powder, and the mixture powder is then stirred to obtain a CIGS ink in a predetermined copper/indium/gallium/selenium ratio as desired.
Claims5
A method for preparing a copper-indium-gallium-selenide (CIGS) ink without a surfactant, which is used for forming a CIGS absorbing layer on a molybdenum layer on a substrate, the method comprising:
- preparing an initial CIGS mixture powder by mixing two component powder, three component powder or four component powder of copper, indium, gallium, and selenium in predetermined proportions;
- adding an additional selenide powder in a first selenide proportion into the initial CIGS mixture powder, and followed by mixing to obtain a final CIGS mixture powder;
- and
- adding a solvent into the final CIGS mixture powder, and followed by stirring and mixing to obtain the CIGS ink.
Dependencies are inferred from the claim text.