NDLI: The CdS/CdTe solar cell protected by ITO/Mo bilayer at improved back contact

Content Provider	IEEE Xplore Digital Library
Author	Rejon, V. Riech, I. Hernandez-Rodriguez, E. Quintana, P. Pena, J.L.
Copyright Year	2014
Description	Author affiliation: Appl. Phys. Dept., CINVESTAV-IPN, Merida, Mexico (Rejon, V.; Hernandez-Rodriguez, E.; Quintana, P.; Pena, J.L.) \|\| Mater. Sci. Lab., Univ. of Yucatan, Merida, Mexico (Riech, I.)
Abstract	In this work CdS/CdTe solar cell that uses a Mo thin film as a back contact on last layer was protected against $MoO_{x}$ formation and scratching by using an ITO thin film. The back contact was fabricated by using Cu/Mo and Cu/Mo/ITO. The Cu layer was used to form $Cu_{x}Te$ onto CdTe film. The films Cu, Mo and ITO were deposited by rf-sputtering. The cell efficiency is degraded when it is annealed at 400 °C in air. We show evidences that the p-n junction remains good and the oxidation of Mo is the main cause of the cell efficiency degradation. Also we show that the ITO thin film deposited onto Mo avoid the $MoO_{x}$ formation when the solar cell is annealed at same conditions. All solar cell characteristics are preserved. The solar cells were fabricated in the superstrate configuration by using Glass/ITO/ZnO/CdS/CdTe/back contact layers. The CdTe film was grown by conventional CSS technique. The cells were activated by using $CHClF_{2}-argon-oxygen$ gases. DRX spectra and HR-SEM were made for Mo/Glass and ITO/Mo/CdTe before and after annealing at 400 °C in air.
Starting Page	1696
Ending Page	1698
File Size	867172
Page Count	3
File Format	PDF
e-ISBN	9781479943982
DOI	10.1109/PVSC.2014.6925247
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Indium tin oxide Zinc oxide Indexes Annealing ITO/Mo bilayer CdS/CdTe solar cells Back contact Activation process annealing process
Content Type	Text
Resource Type	Article

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The CdS/CdTe solar cell protected by ITO/Mo bilayer at improved back contact

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