Title :
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
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, Jsc=34.62 mA/cm2, Voc=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;
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
DOI :
10.1109/WCPEC.2006.279503
