Title :
High-Efficiency Multi-Crystalline Silicon Solar Cells Using Screen-Printed Electrode and Wet Etching Textured Surface
Author :
Okamoto, Satoshi ; Mikami, Rui ; Ozaki, Ryo ; Takaba, Yoshiroh ; Taniguchi, Hiroshi ; Shimizu, Masafumi
Author_Institution :
Ecological Technol. Dev. Center, Sharp Corp., Nara
Abstract :
The enhancement of the conversion efficiency of multi-crystalline silicon (mc-Si) solar cells using screen-printed electrode (SPE) on wet-etching textured surface (WETS) was examined. SPE of Ag paste of 50mum width realized the narrow interval of the finger pattern without increasing shadowing area. The reduction of both contact resistance and finger interval permits doubling the sheet resistance and increases the quantum efficiency of n-layer at front surface. Consequently, the conversion efficiency of 17.4% was obtained for a mc-Si solar cell 100mm square
Keywords :
contact resistance; electrodes; elemental semiconductors; etching; silicon; solar cells; surface texture; 50 micron; SPE; Si; WETS; contact resistance; conversion efficiency; multicrystalline silicon solar cells; quantum efficiency; screen-printed electrode; sheet resistance; wet etching textured surface; Contact resistance; Electrodes; Fabrication; Fingers; Photovoltaic cells; Shadow mapping; Silicon; Surface resistance; Surface texture; Wet etching;
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.2006.279642
