Dimitrios Hariskos, Rico Gutzler, Ana Kanevce, Wolfram Hempel, Stefan Paetel, Wolfram Witte
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引用次数: 0
Abstract
We report on sodium containing indium sulfide (InxSy:Na) buffer layer in combination with a Cu(In,Ga)Se2 (CIGS) absorber and investigate the mutual interaction and influence of them on the thin-film solar cell device performance. We examine a variety of absorber layers including CIGS with RbF post-deposition treatment (PDT), CIGS without PDT, and Ag-alloyed CIGS without PDT, each with three different copper concentrations. All absorber layers are prepared by in-line coevaporation of the elements using a multistage industrially relevant process. The InxSy:Na buffer layers are deposited by magnetron sputtering from three different indium sulfide targets containing 0 mol%, 2 mol%, and 10 mol% NaF.
Devices in which the InxSy:Na layer is combined with CIGS with RbF-PDT have the highest power conversion efficiencies. The presence of sodium in InxSy can contribute to a higher cell efficiency depending on the quality of the absorber used. Sodium likely has a positive effect if the alkali doping in the absorber is insufficient and can be compensated by the sodium supplied from the buffer. We demonstrate cell efficiencies up to 19.1% with a sodium-free In2S3 buffer combined with a high-quality RbF-PDT CIGS absorber with a comparably high copper content.
Solar RRLPhysics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
12.10
自引率
6.30%
发文量
460
期刊介绍:
Solar RRL, formerly known as Rapid Research Letters, has evolved to embrace a broader and more encompassing format. We publish Research Articles and Reviews covering all facets of solar energy conversion. This includes, but is not limited to, photovoltaics and solar cells (both established and emerging systems), as well as the development, characterization, and optimization of materials and devices. Additionally, we cover topics such as photovoltaic modules and systems, their installation and deployment, photocatalysis, solar fuels, photothermal and photoelectrochemical solar energy conversion, energy distribution, grid issues, and other relevant aspects. Join us in exploring the latest advancements in solar energy conversion research.