Effects of heavy alkali elements in Cu(In,Ga)Se2 solar cells with efficiencies up to 22.6%
By P. Jackson, R. Wuerz, D. Hariskos, E. Lotter, W. Witte, M. Powalla. 2016
1,389 citations recorded by the source corpus.
We report on the use and effect of the alkali elements rubidium and caesium in the place of sodium and potassium in the alkali post deposition treatment (PDT) as applied to Cu(In,Ga)Se2 (CIGS) solar cell absorbers. In order to study the effects of the different alkali elements, we have produced a large number of CIGS solar cells with high efficiencies resulting in a good experimental resolution to detect even small differences in performance. We examine the electrical device parameters of these fully functional devices and observe a positive trend in the I –V parameters when moving from devices without PDT to KF‐, RbF‐, and eventually to CsF‐PDT. A diode analysis reveals an improved diode quality for cells treat‐ed with heavier alkalis. Furthermore, secondary ion mass spectrometry (SIMS) measurements reveal a competitive mechanism induced within the class of alkali elements in the CIGS absorber induced by the alkali post deposition treatment. (© 2016 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim)
Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/a5d063bf6c960d84f9fb8d33425863f6626f6ddd
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In Materials Chemistry
Citations in the corpus
- Solar photovoltaic technology: A review of different types of solar cells and its future trends (2021, background): “It was demonstrated that CIGS solar films with high efficiencies when deposited with heavy alkali elements like rubidium and cesium in place of sodium and potassium give high experimental resolution [14].”
- Record Efficiency for Thin-Film Polycrystalline Solar Cells Up to 22.9% Achieved by Cs-Treated Cu(In,Ga)(Se,S)2 (2019, background): “As reported in [11], we have also confirmed that heavier alkali metal elements are more effective at improving”