Journal
IEEE JOURNAL OF PHOTOVOLTAICS
Volume 9, Issue 6, Pages 1846-1851Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOTOV.2019.2930210
Keywords
Cu(In,Ga)Se-2 (CIGS) solar cells; potassium fluoride postdeposition treatment (KF-PDT); X-ray photoelectron; spectroscopy (XPS)
Funding
- National Science Foundation (NSF) [1507351]
- NSF [1428149]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1428149] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1507351] Funding Source: National Science Foundation
Ask authors/readers for more resources
The KF postdeposition treatment (KF-PDT) is compared on Cu(In,Ga)Se-2 (CIGS) and CuInSe2 (CIS), as well as Ag alloyed CIGS and CIS (ACIGS and ACIS), with the focus on surface chemistry and resulting device performance. Ga does not affect the surface K content; however, X-ray photoelectron spectroscopy shows a preferential reaction of F with Ga, in which CIGS+KF forms GaF3 and CIS+KF forms InF3. KF-treated devices have lower Cu and Ag concentration on the surface, but Cu is reduced more strongly than Ag. Films with Ga show a greater Cu and Ag reduction on the surface than CIS or ACIS. The KF-PDT improves CIS and CIGS device performance and allows for both CIS and CIGS to tolerate reduced CdS thicknesses. In ACIS and ACIGS, device performance decreases with KF, and the open-circuit voltage and fill factor loss is reduced with thinner CdS layers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available