Effect of Na-Doped Mo/Mo Bilayer on Cigs Cells and its Photovoltaic Properties

Author

Yun, Jae Ho ; Kim, Ki Hwan ; Ahn, Byung Tae ; Yoon, Kyung Hoon

Author_Institution

Photovoltaic Res. Group, Korea Inst. of Energy Res., Daejeon

Volume

1

fYear

2006

fDate

38838

Firstpage

509

Lastpage

511

Abstract

The photovoltaic properties of CIGS cells on alumina substrate were improved by using the Na-doped Mo layer. The same as CIGS cells on soda-lime glass, Na was observed in the CIGS bulk region on Na-doped Mo/non-doped Mo/alumina substrate. The concentration of Na from Na-doped Mo was smaller than that from SLG. It means that Na-doped Mo might act as Na source and contents of Na could be controlled without alkali barrier layer. The best CIGS solar cell with conversion efficiency of 13.34, J_sc=34.62 mA/cm₂, V_oc=0.58 V and FF=66 % for an active area of 0.45 cm² on the alumina substrate was obtained at 100 nm Na-doped Mo/1000 nm Mo bi-layer

Keywords

copper compounds; gallium compounds; indium compounds; molybdenum; photovoltaic effects; sodium; solar cells; ternary semiconductors; (Mo-Mo):Na; Al₂O₃; CuInGaSe₂; alumina substrate; conversion efficiency; photovoltaic properties; soda-lime glass; Glass; Materials science and technology; Optical films; Photonic band gap; Photovoltaic cells; Photovoltaic systems; Solar power generation; Sputtering; Substrates; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Energy Conversion, Conference Record of the 2006 IEEE 4th World Conference on

Conference_Location

Waikoloa, HI

Print_ISBN

1-4244-0017-1

Electronic_ISBN

1-4244-0017-1

Type

conf

DOI

10.1109/WCPEC.2006.279503

Filename

4059676