Photovoltaic properties of sintered CdS/CdTe solar cells with TCO electrodes

Author

Kim, Hye Dong ; Kim, Dong Seop ; Song, Jin Soo ; Ahn, Byung Tae

Author_Institution

Dept. of Electr. Mater. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea

Volume

1

fYear

1994

fDate

5-9 Dec 1994

Firstpage

315

Abstract

TCO (transparent conducting oxide) electrodes such as ITO and tin oxide were applied to sintered all-polycrystalline CdS/CdTe solar cells for large-area cell fabrication. Adopting TCO to sintered CdS/CdTe cells caused an increase of leakage current. The leakage current was reduced by using (Cd+Te) mixed slurry instead of CdTe compound slurry to form a CdTe layer because (Cd+Te) mixed slurry can make an improved CdS/CdTe junction during synthesis of CdTe compound. The CdS/CdTe cell with ITO electrode showed slightly larger leakage current and that with SnO₂ electrode showed much larger leakage current, compared to the cell without TCO electrode. However, the reduction of the series resistance of the cell with ITO improved the cell parameters such as J _sc and FF, resulting in maintaining high conversion efficiency of the cells with large area. As a result, the ITO/CdS/CdTe cell with 90 mm² area has an efficiency of 9.4% under irradiation with intensity of 50 mW/cm²

Keywords

II-VI semiconductors; cadmium compounds; indium compounds; leakage currents; p-n heterojunctions; powder technology; sintering; solar cells; tin compounds; (Cd+Te) mixed slurry; 9.4 percent; CdS-CdTe; CdS/CdTe junction; ITO; InSnO; SnO₂; SnO₂ electrode; TCO electrodes; cell fabrication; high conversion efficiency; leakage current; series resistance; sintered CdS/CdTe solar cells; tin oxide; transparent conducting oxide electrodes; Coatings; Electrodes; Indium tin oxide; Leakage current; Photovoltaic cells; Photovoltaic systems; Printers; Slurries; Solar power generation; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Energy Conversion, 1994., Conference Record of the Twenty Fourth. IEEE Photovoltaic Specialists Conference - 1994, 1994 IEEE First World Conference on

Conference_Location

Waikoloa, HI

Print_ISBN

0-7803-1460-3

Type

conf

DOI

10.1109/WCPEC.1994.519871

Filename

519871