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Elsevier, Applied Surface Science, (355), p. 800-804

DOI: 10.1016/j.apsusc.2015.07.195

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Integration of plasmonic Ag nanoparticles as a back reflector in ultra-thin Cu(In,Ga)Se 2 solar cells

Journal article published in 2015 by Guanchao Yin, Alexander Steigert, Patrick Andrae, Manuela Goebelt, Michael Latzel, Phillip Manley, Iver Lauermann ORCID, Silke Christiansen, Martina Schmid
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Integration of plasmonic Ag nanoparticles as a back reflector in ultra-thin Cu(In,Ga)Se2 (CIGSe) solar cells is investigated. X-ray photoelectron spectroscopy results show that Ag nanoparticles underneath a Sn:In2O3 back contact could not be thermally passivated even at a low substrate temperature of 440 °C during CIGSe deposition. It is shown that a 50 nm thick Al2O3 film prepared by atomic layer deposition is able to block the diffusion of Ag, clearing the thermal obstacle in utilizing Ag nanoparticles as a back reflector in ultra-thin CIGSe solar cells. Via 3-D finite element optical simulation, it is proved that the Ag nanoparticles show the potential to contribute the effective absorption in CIGSe solar cells.