[10p-W321-1~16] 13.9 Compound solar cells

[10p-W321-9] Effects of Heat Treatment after CdS Deposition on CdTe Thin-Film Solar Cells in Substrate Configuration

〇Tamotsu Okamoto¹, Yusuke Hayashi¹, Daichi Watanabe¹ (1.NIT, Kisarazu Coll.)

Keywords:II-VI compounds, CdTe, thin-film solar cells

Substrate-type CdTe thin-film solar cells with a carbon / CdTe / CdS / ZnO:Al / Ag structure were fabricated. We achieved approximately 10% efficiency using the heat treatment (face-to-face annealing and 2^nd CdCl₂ treatment) after CdS deposition, and the 2^nd Cu doping. For investigating the effects of the heat treatment after CdS deposition, we fabricated the substrate-type CdTe thin-film solar cells (a) without the face-to-face annealing and the 2^nd CdCl₂ treatment, (b) without the face-to-face annealing and with the 2^nd CdCl₂ treatment, (c) with the face-to-face annealing and without the 2^nd CdCl₂ treatment, and (d) with the face-to-face annealing and the 2^nd CdCl₂ treatment.