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Keywords = pure sulfide CIGS

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11 pages, 1926 KiB  
Article
Dominant Processing Factors in Two-Step Fabrication of Pure Sulfide CIGS Absorbers
by Sarallah Hamtaei, Guy Brammertz, Marc Meuris, Jef Poortmans and Bart Vermang
Energies 2021, 14(16), 4737; https://doi.org/10.3390/en14164737 - 4 Aug 2021
Cited by 4 | Viewed by 2109
Abstract
Pure sulfide CIGS solar cells are interesting candidates for standalone solar cells or top cells in a tandem configuration. To understand the limits and improve the power conversion efficiency of these devices, a comprehensive approach aimed at composition, interface, and process engineering should [...] Read more.
Pure sulfide CIGS solar cells are interesting candidates for standalone solar cells or top cells in a tandem configuration. To understand the limits and improve the power conversion efficiency of these devices, a comprehensive approach aimed at composition, interface, and process engineering should be employed. Here, the latter was explored. Using a two-step fabrication technique and one-variable-at-a-time methodology, we found the four processing factors affecting the absorber the most. While two were already backed by the previous literature, we found new and statistical evidence for two other important factors as well. The impact of alkali barrier diffusion was also established with statistical significance and under various processing conditions. Furthermore, the absorber roughness for samples without a barrier indicated a significant negative linear correlation with the devices’ efficiency. This contribution could aid engineers in more efficient process designs. Full article
(This article belongs to the Special Issue Future Directions in Thin Film Solar Cells)
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