Ultrathin CdTe Solar Cells with MoO3−x/Au Back Contacts

We report on the fabrication and characterization of CdTe thin-film solar cells with Cu-free MoO 3− x /Au back contacts. CdTe solar cells with sputtered CdTe absorbers of thicknesses from 0.5 to 1.75 μ m were fabricated on Pilkington SnO 2 :F/SnO 2 -coated soda–lime glasses coated with a 60- to 80-n...

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Veröffentlicht in:	Journal of electronic materials 2014, Vol.43 (8), p.2783-2787
Hauptverfasser:	Paudel, Naba R., Compaan, Alvin D., Yan, Yanfa
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Characterization and Evaluation of Materials Chemistry and Materials Science Cross-disciplinary physics: materials science rheology Deposition by sputtering Electronics and Microelectronics Energy Exact sciences and technology Instrumentation Materials Science Methods of deposition of films and coatings film growth and epitaxy Natural energy Optical and Electronic Materials Photovoltaic conversion Physics Solar cells. Photoelectrochemical cells Solar energy Solid State Physics
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Zusammenfassung:	We report on the fabrication and characterization of CdTe thin-film solar cells with Cu-free MoO 3− x /Au back contacts. CdTe solar cells with sputtered CdTe absorbers of thicknesses from 0.5 to 1.75 μ m were fabricated on Pilkington SnO 2 :F/SnO 2 -coated soda–lime glasses coated with a 60- to 80-nm sputtered CdS layer. The MoO 3− x /Au back contact layers were deposited by thermal evaporation. The incorporation of MoO 3− x layer was found to improve the open circuit voltage ( V OC ) but reduce the fill factor of the ultrathin CdTe cells. The V OC was found to increase as the CdTe thickness increased.
ISSN:	0361-5235 1543-186X
DOI:	10.1007/s11664-014-3042-4