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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
(a) Simulated QE with varied CIGS layer thickness and a fixed 111 nm thick MgF2 layer. (b) Simulated JSC as a function of MgF2 thickness, for varied CIGS layer thickness.