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Atomic layer deposition of ZnInxSy buffer layers for Cu(In,Ga)Se2 solar cells

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2015 France Publisher:AIP PublishingJournal:Journal of Renewable and Sustainable Energy, volume 7 (eissn: 1941-7012,

Authors: Genevee, P.; Darga, Arouna; Longeaud, C.; Lincot, D.; Donsanti, F.;

doi: 10.1063/1.4906912

Atomic layer deposition of ZnInxSy buffer layers for Cu(In,Ga)Se2 solar cells

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Abstract

We report in this paper the use of ZnInxSy films deposited by atomic layer deposition as cadmium free buffer layer in Cu(In,Ga)Se2 (CIGS) solar cells. Buffer layers with different In/(In + Zn) ratios over the whole composition range were prepared on glass substrate and characterized optically by transmission and reflection measurement and electrically by steady state photoconductivity and modulated photocurrent. CIGS solar cells were prepared with the different buffer layers and characterized. A compromise between the properties of In2S3 and ZnS was found for intermediate compositions as aimed for this study. Best efficiencies were obtained for intermediate composition (In/(In + Zn) close to 28 at. %) which also allows a higher open circuit voltage. Solar cell simulations allowed to point out the major role played by interface defect states in these devices.

Country

France

Related Organizations

French Institute for Research in Computer Science and Automation
France
University of Paris
France
New Sorbonne University
France
Sorbonne Paris Cité
France
French National Centre for Scientific Research
France

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Keywords

[SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [ PHYS.COND.CM-MS ] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [PHYS.COND.CM-MS] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [ SPI.OPTI ] Engineering Sciences [physics]/Optics / Photonic, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [ PHYS.COND ] Physics [physics]/Condensed Matter [cond-mat]

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	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Average