The Influence of Thickness on the Properties of Sb₂Te₃ Thin Films and its Application in CdS/CdTe Thin Film Solar Cells

Abstract:

Sb₂Te₃ thin films with thickness of 70, 100, 300, and 600nm were co-evaporated by vacuum evaporation. These films were annealed by 423K, 473K, 523K and 573K, respectively, in the protection of N₂ ambient. After that, the film structures were investigated by XRD. Composition of the films was surveyed XRF and XPS. Stoichiometric Sb₂Te₃ thin films were prepared. Then the Sb₂Te₃ thin films were applied to CdTe thin film solar cells as back contact layer. The influence of Sb₂Te₃ thin films thickness on the performances of CdS/CdTe thin film solar cells were surveyed by light I-V characteristics and an efficiency of 12.27%, Voc=808.2mV, Jsc=25.1mA/cm², FF= 0.6051 was obtained.

• Periodical: Advanced Materials Research (Volumes 225-226)
• Pages: 789-793
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.225-226.789
• Online since: April 2011
• Authors: Song Bai Hu, Rong Zhe Tang, Cai Juan Tian, Wei Li, Liang Huan Feng, Jing Quan Zhang, Li Li Wu
• Keywords: CdTe Solar Cell, Sb₂Te₃ Thin Film, Vacuum Co-Evaporation, XPS, X-Ray Diffraction (XRD)

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